Differences

This shows you the differences between two versions of the page.

--- techtalk:ih:carb01 [2022/04/19 02:40]
hippysmack [Sub Documents]
+++ techtalk:ih:carb01 [2024/02/22 01:09] (current)
hippysmack [Sub Documents]
@@ Line 59: / Line 59: @@
 |Sportster \\ Carb Model|Idle Bleed|Idle Tube \\ Feed|Fixed Jet|Throttle \\ Disc|High \\ Speed \\ Setting|Idle Speed \\ Setting|
 |**27155-57** ((1952-1957 HD Spare Parts Catalog pg 15 for all Sportster and K models)) **1957-1958 Sportster**|||||||
-|DC-1 ((HD TSB #389 dated 5-1-57)) \\ Standard \\ 1957 (only)|#53 .0595|#69 .0293|#9 .067|9A ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?t=691253&highlight=Linkert&page=2)) | 3/4" to 1-1/4" | 3/4" to 1"  ((HD 1959-1964 Sportster FSM))|
+|DC-1 ((HD TSB #389 dated 5-1-57)) \\ Standard \\ 1957 (only)|#53 .0595|#69 .0293|#9 .067|9A ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2)) | 3/4" to 1-1/4" | 3/4" to 1"  ((HD 1959-1964 Sportster FSM))|
 |**27155-57A** ((1952-1959 HD Spare Parts Catalog pg 16 for all Sportster and K models)) **1959-1960 Sportster**|||||||
-|DC-1L ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ Standard \\ 1958-1960|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?t=691253&highlight=Linkert&page=2)) | 3/4" to 1-1/4" | 1" to 1-1/4" ((HD 1959-1964 Sportster FSM))|
+|DC-1L ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ Standard \\ 1958-1960|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2)) | 3/4" to 1-1/4" | 1" to 1-1/4" ((HD 1959-1964 Sportster FSM))|
-|DC-1M ((HD TSB #389 dated 5-1-57)) \\ Miltary XLA|#53 .0595|#69 .0293|#1 .052|9A ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?t=691253&highlight=Linkert&page=2)) | 3/4" to 1-1/4" | 1" ((HD 1959-1964 Sportster FSM))|
+|DC-1M ((HD TSB #389 dated 5-1-57)) \\ Miltary XLA|#53 .0595|#69 .0293|#1 .052|9A ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2)) | 3/4" to 1-1/4" | 1" ((HD 1959-1964 Sportster FSM))|
 |**27155-57B** ((1959-1961 HD Spare Parts Catalog Supplement for all Sportster and K models)) **1961-1965 Sportster**|||||||
-|DC-6 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ Standard \\ 1961|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?t=691253&highlight=Linkert&page=2)) |
+|DC-6 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ Standard \\ 1961|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2)) |
-|DC-10 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ Standard \\ 1962-E1963|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?t=691253&highlight=Linkert&page=2))| 3/4" to 1-1/4" | 1" to 1-1/4" ((HD 1959-1964 Sportster FSM))|
+|DC-10 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ Standard \\ 1962-E1963|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2))| 3/4" to 1-1/4" | 1" to 1-1/4" ((HD 1959-1964 Sportster FSM))|
-|DC-12 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ Standard \\ L1963-1965|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?=691253&highlight=Linkert&page=2))|
+|DC-12 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ Standard \\ L1963-1965|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2))|
 ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}|||||||
 |Other HD Carb Model|Idle Bleed|Idle Tube \\ Feed|Fixed Jet|Throttle \\ Disc|High \\ Speed \\ Setting|Idle Speed \\ Setting|
-|DC-2 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ 1959-65 Servicar \\ (smaller venturi, \\ opposite float bowl)|#51 .067|#70 .028|#20 .0452|12 ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?t=691253&highlight=Linkert&page=2)) | 3/4" to 1-1/4" | 1" to 1-1/4" ((HD 1959-1964 Sportster FSM))|
+|DC-2 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ 1959-65 Servicar \\ (smaller venturi, \\ opposite float bowl)|#51 .067|#70 .028|#20 .0452|12 ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2)) | 3/4" to 1-1/4" | 1" to 1-1/4" ((HD 1959-1964 Sportster FSM))|
-|DC-7 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ 1966 Big-Twin FL and FLH \\ (larger venturi)|#53 .0595|#69 .0293|.070|9A ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?t=691253&highlight=Linkert&page=2))|
+|DC-7 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ 1966 Big-Twin FL and FLH \\ (larger venturi)|#53 .0595|#69 .0293|.070|9A ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2))|
-|DC-12 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ 1966 Big-Twin FL and FLH|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM http://xlforum.net/forums/showthread.php?=691253&highlight=Linkert&page=2))|
+|DC-12 ((http://www.classic-motorcycle-build.com/linkert-dc-carb.html)) \\ 1966 Big-Twin FL and FLH|#53 .0595|#69 .0293|#4 .0625|9A ((thefrenchowl from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/87592-linkert-dc-model-for-1961-xlch/page2?t=691253&highlight=Linkert&page=2))|
 ===== Tillotson HD Carb (1966-1971) =====
@@ Line 106: / Line 106: @@
     * Intake Manifold (27021-57) ((HD Sportster Parts Catalog (99451-78B) ))
-| **HD-1A** was the 66 version, no pump check ball, used the no drill insulator and the "wraparound" cable bracket is the same as the 67-71. 66 uses the Linkert bracket ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1567534&page=4)) \\ Fuel pressure and the weight of the needle alone move the needle away from the inlet seat. ((HD Service Bulletin #547 dated October 24th, 1966 pg OC-237))|
+| **HD-1A** was the 66 version, no pump check ball, used the no drill insulator and the "wraparound" cable bracket is the same as the 67-71. 66 uses the Linkert bracket ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144565-disaster-averted/page4?t=1567534&page=4)) \\ Fuel pressure and the weight of the needle alone move the needle away from the inlet seat. ((HD Service Bulletin #547 dated October 24th, 1966 pg OC-237))|
-|**HD-1B ** Starting after engine #66XLCH-10611, the carb has a new inlet valve lever, needle and seat assembly to help correct problems such as high speed leaning out caused by vibration and needle sticking due to dirt / debris in carburetor. The stamped ID has the model stamped on the flange near the idle mixture adjustment wheel. \\ The new lever had a forked end which engaged a groove in the new inlet needle seat stem which locked the lever to the needle providing diaphragm control of the needle movement in both directions. \\ It was recommended to install this update into the HD-1A carb (where definite carburetor problems exist) ((HD Service Bulletin #547 dated October 24th, 1966 pg OC-237)) \\ 67-E68 used the 'standard' choke and throttle shafts, no pump check, insulator gets drilled for over the top. Same pn. This insulator gets used on e67CH, 70-71CH and 67-71 XLH.  \\ 67-69 CH gets its own insulator. New pn for this one. Same part as others, this vintage except the lower stud is now longer for the plug wire router to mount.((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1567534&page=4))|
+|**HD-1B ** Starting after engine #66XLCH-10611, the carb has a new inlet valve lever, needle and seat assembly to help correct problems such as high speed leaning out caused by vibration and needle sticking due to dirt / debris in carburetor. The stamped ID has the model stamped on the flange near the idle mixture adjustment wheel. \\ The new lever had a forked end which engaged a groove in the new inlet needle seat stem which locked the lever to the needle providing diaphragm control of the needle movement in both directions. \\ It was recommended to install this update into the HD-1A carb (where definite carburetor problems exist) ((HD Service Bulletin #547 dated October 24th, 1966 pg OC-237)) \\ 67-E68 used the 'standard' choke and throttle shafts, no pump check, insulator gets drilled for over the top. Same pn. This insulator gets used on e67CH, 70-71CH and 67-71 XLH.  \\ 67-69 CH gets its own insulator. New pn for this one. Same part as others, this vintage except the lower stud is now longer for the plug wire router to mount.((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144565-disaster-averted/page4?t=1567534&page=4))|
-|**HD-1BC** or **HD-1C**  Late 1968 Sportsters ( Carb # 27162-66B) received a ball check valve in the accelerating pump passage of the plastic cover which provides a seal against air bleeding back from the venturi into the fuel chamber. ((Shop Dope Vol 4 Service Bulletin No 571 May 21, 1968)). \\ L68-69 HD1C gets the pump check.((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1567534&page=4)) \\ 70-71 HD1D different body casting. may be different low speed circuit.((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1567534&page=4))|
+|**HD-1BC** or **HD-1C**  Late 1968 Sportsters ( Carb # 27162-66B) received a ball check valve in the accelerating pump passage of the plastic cover which provides a seal against air bleeding back from the venturi into the fuel chamber. ((Shop Dope Vol 4 Service Bulletin No 571 May 21, 1968)). \\ L68-69 HD1C gets the pump check.((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144565-disaster-averted/page4?t=1567534&page=4)) \\ 70-71 HD1D different body casting. may be different low speed circuit.((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144565-disaster-averted/page4?t=1567534&page=4))|
 |**HD-2A** \\ **HD-2AB** \\ **HD-2B**|Electra Glide models ((HD Service Bulletin #547 dated October 24th, 1966 pg OC-237)) \\ w / pre lever needle and seat assembly|
@@ Line 120: / Line 120: @@
 ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}||
 |Serial Number|Main Jet|
-|27160-66B ((rivethog of the XLFORUM http://xlforum.net/forums/showthread.php?t=757993&page=2)) \\ Big Twin|  |
+|27160-66B ((rivethog of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/92522-another-tillotson-magneto-hard-to-start-xlch-question/page2?t=757993&page=2)) \\ Big Twin|  |
 |27162-66B ((Shop Dope Vol 4 Service Bulletin No 571 May 21, 1968)) \\ Sportster|    |
 |27162-66C ((HD Sportster Parts Catalog pg B11-1 (99451-78B) )) \\ Sportster|0.053", 0.055", 0.059", 0.057", 0.061", 0.063" ((HD Sportster Parts Catalog pg B11-1 (99451-78B) ))|
@@ Line 132: / Line 132: @@
 ===== Mikuni XR-750 racing engines only =====
+**1972-1980** \\
-**1972-1980**
+Through 1980, XR-750 engines were equipped with a 36mm Round Slide((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/188431-to-keihin-fcr-or-not/page3?t=2006195&page=3)) Mikuni. Below is a chart of the standard jetting of these carbs. Final jetting may vary. ((1972-2003 HD XR-750 Service Manual pg 39))
-Through 1980, XR-750 engines were equipped with a 36mm Round Slide((http://xlforum.net/forums/showthread.php?t=2006195&page=3)) Mikuni. Below is a chart of the standard jetting of these carbs. Final jetting may vary. ((1972-2003 HD XR-750 Service Manua pg 39))
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}|||||||
 |36mm Carb Types|Main|Pilot|Needle|Needle Jet|Slide|Air Correction Jet|
 |VM-36-1 \\ VM-36-4 \\ VM36/39|240|25|6F5|159-P4|2.0|1.0|
@@ Line 142: / Line 142: @@
 **1989-2003**
-Engine upgrades prompted HD to recommend the use of Mikuni's 38mm Flat Slide carburetor (not supplied with the engine kit). Recommended jetting chart below.((1972-2003 HD XR-750 Service Manua pg 39))
+Engine upgrades prompted HD to recommend the use of Mikuni's 38mm Flat Slide carburetor (not supplied with the engine kit). Recommended jetting chart below.((1972-2003 HD XR-750 Service Manual pg 39))
-|38mm Carb Types|Main|Pilot|Needle Jet|Slide|
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}||||||
+|38mm Carb Types|Main|Pilot|Needle Jet|Slide||
 |TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.)|210-260|20-25|6FM46|Q0,Q2,Q4|4.0|
-  * Most Mikuni carbs have a backwards Idle mix screw, in to richen, out to lean. ((ryder rick from the XLFORUM http://xlforum.net/forums/showthread.php?postid=5514564#post5514564))
+  * Most Mikuni carbs have a backwards Idle mix screw, in to richen, out to lean. ((ryder rick from the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/188792-drag-pipes/page4?postid=5514564#post4058314))
-  * The longer carb provides a better signal to the fuel metering business inside. This is why the round slide carb works so well combined with the taper on the slide and needle. The round slide carb will have a wider sweet spot than a flat slide ((ryder rick http://xlforum.net/forums/showthread.php?threadid=2006195)) and that equates to better low range. ((big_sleezy http://xlforum.net/forums/showthread.php?t=2006195&page=2))
+  * The longer carb provides a better signal to the fuel metering business inside. This is why the round slide carb works so well combined with the taper on the slide and needle. The round slide carb will have a wider sweet spot than a flat slide ((ryder rick https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/188431-to-keihin-fcr-or-not?threadid=2006195)) and that equates to better low range. ((big_sleezy https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/188431-to-keihin-fcr-or-not/page2?t=2006195&page=2))
 ===== Mikuni (general application) =====
@@ Line 154: / Line 155: @@
 The VM series carbs are round slide Mikunis, 34, 36, 38 MM etc. Only Mikuni round slide carbs are designated as VM.
-Mikuni lists the following Vintage Carb Kits: ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=765846&page=8)) \\
+Mikuni lists the following Vintage Carb Kits: ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/93137-mikuni-vm38-success-story/page8?t=765846&page=8)) \\
 -200....HDS-101/38mm.... Sportster/Shovelhead \\
 -204....HDS-101A/40mm.... Sportster/Shovelhead \\
@@ Line 160: / Line 161: @@
 So any of these 3 sizes will work.
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}||
 |**Mikuni** (**XR-750 Racing Engines Only**)||
-|VM-36-1 \\ VM-36-4 \\ VM36/39|1972-1980 XR-750 / 36 mm with a round slide ((http://xlforum.net/forums/showthread.php?t=2006195&page=3))((1972-2003 HD XR-750 Service Manual pg 39))|
+|VM-36-1 \\ VM-36-4 \\ VM36/39|1972-1980 XR-750 / 36 mm with a round slide ((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/188431-to-keihin-fcr-or-not/page3?t=2006195&page=3))((1972-2003 HD XR-750 Service Manual pg 39))|
 |TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.) \\ TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.)|1989-2003 XR-750 / 38 mm with a flat slide((1972-2003 HD XR-750 Service Manual pg 39))|
-The correct version of the VM38 for an ironhead Sportster is the VM38-9. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1814834&page=2)) ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=765846&page=3)) ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=765846&page=4)) \\
+The correct version of the VM38 for an ironhead Sportster is the VM38-9. ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/169173-mikuni-sticks-out-too-far/page2?t=1814834&page=2)) ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/93137-mikuni-vm38-success-story/page3?t=765846&page=3)) ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/93137-mikuni-vm38-success-story/page4?t=765846&page=4)) \\
-The VM38-"9" was setup and extensively tested by Jerry Branch for the stock Sportster engine using flow bench tech for the time. ((simeli of the XLFORUM http://xlforum.net/forums/showthread.php?t=1636803&page=2)) \\
+The VM38-"9" was setup and extensively tested by Jerry Branch for the stock Sportster engine using flow bench tech for the time. ((simeli of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/151596-re-jetting-the-vm38-9-2/page2?t=1636803&page=2)) \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}|||||||
 |38mm Carb Types|Main|Pilot|Needle Jet|Throttle Valve|Jet Needle|Air Jet|
-|VM38-9 (43mm spigot)((IronMick http://xlforum.net/forums/showthread.php?t=2006195&page=2))|330|30|Q-2|2.5|6DP1|0.5 \\ 2.0|
+|VM38-9 (43mm spigot)((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/188431-to-keihin-fcr-or-not/page2?t=2006195&page=2))|330|30|Q-2|2.5|6DP1|0.5 \\ 2.0|
 ===== Bendix/ Zenith I6P12 Carb (1972-Early 1976) =====
@@ Line 214: / Line 217: @@
 |Year Model XLH/ XLCH|Serial Number|Main Jet Sizes (mm)|Low Speed Idle Jet||
 |**E1972**|27155-72 ((1972,1973 HD Sportster Parts Catalog Supplements (99451-72), (99451-73) )) |0.90mm (27612-71)|**Early '72** (27749-72) \\ **Late '72-'74** (27750-72)||
-|**L1972-1974**|27155-72A ((1973, 1974 HD Sportster Parts Catalog Supplements (99451-73) (99451-74) ))|**Late '72-'73** \\ 0.95mm (27614-71) \\ 1.00mm (27618-71) \\ 1.05mm (27619-71 standard) \\ **Added in L'74-E'76** \\ 1.10mm (27620-71 standard) ((The Doctor71 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2073320)) \\ 1.15mm (27621-71) \\ 1.20mm (27622-71) \\ 1.25mm (27623-71)|:::|:::|
+|**L1972-1974**|27155-72A ((1973, 1974 HD Sportster Parts Catalog Supplements (99451-73) (99451-74) ))|**Late '72-'73** \\ 0.95mm (27614-71) \\ 1.00mm (27618-71) \\ 1.05mm (27619-71 standard) \\ **Added in L'74-E'76** \\ 1.10mm (27620-71 standard) ((The Doctor71 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/196742-bendix-main-jet?t=2073320)) \\ 1.15mm (27621-71) \\ 1.20mm (27622-71) \\ 1.25mm (27623-71)|:::|:::|
 |**1975-Early 1976** \\ Including all '71-'75 FX models| 27155-72B ((1975 HD Sportster Parts Catalog Supplement (99451-75) )) ((1976 HD Sportster Parts Catalog Supplement (99451-76) )) ((1971-1984 HD FX Parts Catalog pg 35)) |:::|:::|:::|
 ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}|||||
@@ Line 239: / Line 242: @@
     * **Operation**: Fuel from the gas tank passes through the fuel valve, onto float chamber. The fuel entering causes the float to rise until it shuts off the fuel valve, stopping the flow at a level predetermined by float level setting.  ((1970-1978 HD XL/XLH/XLCH/XLT 1000 FSM))
     * **Idle or Slow System**: The slow system functions at idle, low and intermediate speeds when throttle valve is closed or only partially open. At idle, fuel enters the main jet and, after being metered there, enters the slow jet where it is metered again. Fuel from the slow jet enters the slow jet bleed tube where it mixes with air through the slow air passage. Fuel mixture is regulated by adjusting the idle (low speed) mixture screw. When the throttle valve is closed, fuel mixture flows into the venture almost entirely through the idle port. As the throttle valve gradually opens, fuel mix discharge is transferred to the bypass. The slow jet bleed tube is actually a part of the slow jet. ((1970-1978 HD XL/XLH/XLCH/XLT 1000 FSM))
-    * **The Main System**: The main system functions at intermediate and high speeds as the throttle valve opens further. Fuel is metered by the main jet and enters the main jet air passage. The fuel/ air mixture then exits from the main nozzle and into the venturi. ((1970-1978 HD XL/XLH/XLCH/XLT 1000 FSM))
+    * **The Main System**: The main system functions at intermediate and high speeds as the throttle valve opens further. Fuel is metered by the main jet and enters the main jet air passage. The fuel/air mixture then exits from the main nozzle and into the venturi. ((1970-1978 HD XL/XLH/XLCH/XLT 1000 FSM)) There is no metering needle.
     * **The Accelerating Pump System**: The accelerating pump system works with sudden throttle openings (rapid acceleration) to quickly inject fuel into the carb to provide extra fuel for the engine demand. Rapid throttle action pushes the pump rod down, flexing the diaphragm, which compresses fuel underneath the diaphragm, forcing it up past the check valve and out the pump nozzle into the venturi. The check valve prevents backflow while the pump nozzle meters the flow. Spring action then returns the diaphragm back to it's original position. As the diaphragm returns, a new supply of fuel flows in and under it so the system will be ready to repeat the cycle with the next rapid throttle action detected. ((1970-1978 HD XL/XLH/XLCH/XLT 1000 FSM))
     * **The Choke System**: The choke is manually set by pulling out on the choke button. Pulled all the way out is fully closed (for cold engine), partially open (for warm engine) or pushed all the way in, fully open (for warm engine). ((1970-1978 HD XL/XLH/XLCH/XLT 1000 FSM))
@@ Line 250: / Line 253: @@
 ==== Sportster Keihin Butterfly Carburetors by Year Model ====
 ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}||||||||
-^Sportster Model^Year \\ Carb Used^HD Part Number^Flange / \\ Casting \\ Number^  Main Jet \\ Size  ^Low Speed \\ Jet Size^Initial Mixture \\ screw setting^Accel Pump \\ spring position^
+|Sportster Model|Year \\ Carb Used|HD Part#|Flange / \\ Casting \\ Number|  Main Jet \\ Size  |Low Speed \\ Jet Size|Initial Mixture \\ screw setting|Accel Pump \\ spring position|
 |XLH, XLCH|Late 1976|27153-76((HD Sportster Parts Catalog XLH/XLCH 99451-78B))|B50A ((HD Service Bulletin #M-713 dated June 10, 1977))|(140 std) ((HD Service Bulletin #M-713 dated June 10, 1977)) \\ Optional jets ((HD Parts and Accessories Bulletin dated February 8, 1977))  \\ - 130, 135, 145, 150 \\ 155, 160, 165, 170, 175((HD Sportster Parts Catalog XLH/XLCH 99451-78B))|100|7/8 ((HD Service Bulletin #M713 dated June 10, 1977))|Upper ((HD Service Bulletin #M-713 dated June 10, 1977))|
-|XLH, XLCH, XLT|1977-1978 |27153-77 ((HD Sportster Parts Catalog XLH/XLCH 99451-78B))|B50B ((HD Service Bulletin #M-713 dated June 10, 1977)) \\ B50C |(160 std) ((1954-1977 HD Sportster Parts Supplement pg 2)) (165 std) ((HD Service Bulletin #M713 dated June 10, 1977)) \\ Optional jets ((HD Parts and Accessories Bulletin dated February 8, 1977))  \\ - 130, 135, 145, 150 \\ 155, 160, 165, 170, 175((HD Sportster Parts Catalog XLH/XLCH 99451-78B))|75|1-1/4 ((HD Service Bulletin #M713 dated June 10, 1977))|Center ((HD Service Bulletin #M713 dated June 10, 1977))|
+|XLH, XLCH, XLT|1977-1978 |27153-77 ((HD Sportster Parts Catalog XLH/XLCH 99451-78B))|B50B ((HD Service Bulletin #M-713 dated June 10, 1977)) \\ B50C |(160 std) ((1954-1977 HD Sportster Parts Supplement pg 2)) (165 std) ((HD Service Bulletin #M713 dated June 10, 1977)) \\ Optional jets ((HD Parts and Accessories Bulletin dated February 8, 1977))  \\ 130, 135, 145, \\ 150, 155, 160, \\ 165, 170, 175 ((HD Sportster Parts Catalog XLH/XLCH 99451-78B))|75|1-1/4 ((HD Service Bulletin #M713 dated June 10, 1977))|Center ((HD Service Bulletin #M713 dated June 10, 1977))|
-|XL, XLCH, XLS |1979|27469-78 ((1979 Harley Davidson Sportster Parts Catalog)) \\ 27469-78A ((1980 HD Sportster Parts Catalog -80 pg 17))|B83A \\ B83B|165 \\ 160 - above 4000' ((HD Service Buletin #M-730 dated June 15, 1978 - Instruction Sheet pg 2))|65 ((1979 Harley Davidson Sportster Parts Catalog))|
+|XL, XLCH, XLS |1979|27469-78 ((1979 Harley Davidson Sportster Parts Catalog)) \\ 27469-78A ((1980 HD Sportster Parts Catalog -80 pg 17))|B83A \\ B83B|165 \\ 160- \\ above 4000' ((HD Service Buletin #M-730 dated June 15, 1978 - Instruction Sheet pg 2))|65 ((1979 Harley Davidson Sportster Parts Catalog))|
 |XL, XLS|1980|27469-80 \\ 27469-80A ((1981 HD Sportster Parts Catalog -81 pg 19))|B83C \\ B83D|160 \\ 165|65 ((1979-1985 HD XL Parts Catalog pg 23))|
 |XL, XLS|E81-E82 \\ L81-E82|27469-81 ((1981 HD Sportster Parts Catalog -81 pg 21)) \\ 27469-81A ((1983 HD Sportster Parts Catalog -83 pg 23))|B83E \\ B83F|160 \\ 160|68 ((1979-1985 HD XL Parts Catalog pg 25))|
@@ Line 267: / Line 270: @@
 |XL 1100|1987|27502-86B ((1986-1987 HD Sportster Parts Catalog pg 21))|B83H|150|52|
-^  Main Jets ((1954-1976 HD Sportster Parts Catalog pg 19)) ((TSB #694 dated November 7, 1975))  ^^^^^^^
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}||||||||
-|HD#|27397-76|27398-76|27399-76|27615-76|27400-76|27401-76|
+|  Main Jets ((1954-1976 HD Sportster Parts Catalog pg 19)) ((TSB #694 dated November 7, 1975))  ||||||||
-|Size|155 \\ 1001-104-155|150 \\ 1001-104-150|145 \\ 1001-104-145|140 \\ 1001-104-140|135 \\ 1001-104-135|130 \\ 1001-104-130|
+|HD#|27397-76|27398-76|27399-76|27615-76|27400-76|27401-76||
-^ ^^^^^^^
+|Size|155 \\ 1001-104-155|150 \\ 1001-104-150|145 \\ 1001-104-145|140 \\ 1001-104-140|135 \\ 1001-104-135|130 \\ 1001-104-130||
-|HD#|27356-76|27416-76|27417-76|27418-76|27419-76|27420-76|
+|||||||||
-|Size|185|180|175|170|165|160|
+|HD#|27356-76|27416-76|27417-76|27418-76|27419-76|27420-76||
+|Size|185|180|175|170|165|160||
 ==== Other HD Keihin Carburetors by Year Model ====
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}||||||||
-^Other HD Model^Year \\ Carb Used^Serial Number^Flange / \\ Casting \\ Number^  Main Jet \\ Size  ^Low Speed \\ Jet Size^Initial Mixture \\ screw setting^Accel Pump \\ spring position^
+|Other HD Model|Year \\ Carb Used|Serial Number|Flange / \\ Casting \\ Number|  Main Jet \\ Size  |Low Speed \\ Jet Size|Initial Mixture \\ screw setting|Accel Pump \\ spring position|
 |All FX|76|27155-76| 860A ((Hd TSB #M-713 dated June 10, 1977)) \\ 860B |185 ((Hd TSB #M713 dated June 10, 1977))|100|7/8|center|
 |All FL|76-E77|:::|:::|:::|:::|:::|:::|
@@ Line 293: / Line 297: @@
 |FXWG|1980|27470-80 ((1971-1984 HD FX Parts Catalog pg 27))|B28D|160|72|
 |FXS-80 \\ FXEF-80 \\ FXB|1980|27472-80A ((1971-1984 HD FX Parts Catalog pg 27))|B79D|160|
+|  |1981 ?|27494-81|B78E|
 |FLH-80 \\ Classic|1981-1984|27494-81A ((1966-1984 HD FL Parts Catalog pg  (99456-84B) 33))|B78F|165|70|
 |FXEF-80 \\ FXE-80|1981-1983|27472-81A ((1971-1984 HD FX Parts Catalog pg 29))|B79F|160 (FXEF-80) \\ 165 (FXE-80)|72|
@@ Line 318: / Line 323: @@
 Gas getting to the boiling point can happen for several reasons. \\
 Having the gas line resting against the engine, the float set too low and others will also attribute to boiling gas. \\
-The problem from hot gas is a vapor lock if the gasoline is heated to the point where it vaporizes before it reaches the intake. ((KWJams of the XLFORUM http://xlforum.net/forums/showthread.php?t=496913)) \\
+The problem from hot gas is a vapor lock if the gasoline is heated to the point where it vaporizes before it reaches the intake. ((KWJams of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/72243-boiling-gasoline?t=496913)) \\
 **A lean bike will run hot**: \\
-Make sure the intake seals really well and make sure they're not leaking. ((FourCams of the XLFORUM http://xlforum.net/forums/showthread.php?t=496913)) \\
+Make sure the intake seals really well and make sure they're not leaking. ((FourCams of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/72243-boiling-gasoline?t=496913)) \\
 **Engine heat transferring thru the carb**: \\
@@ Line 328: / Line 333: @@
 When this happens, the engine can idle erratically and stop. \\
-You may be able to look inside your gas tank after the bike has been sitting for about 15 minutes and see gas boil inside the tank. ((MDT of the XLFORUM http://xlforum.net/forums/showthread.php?t=496913)) \\
+You may be able to look inside your gas tank after the bike has been sitting for about 15 minutes and see gas boil inside the tank. ((MDT of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/72243-boiling-gasoline?t=496913)) \\
 While your engine is running, the air going through the carb, cools the carb. \\
 But when you shut off the engine, the heat from your heads and cylinders transfers into your carb. With nothing to cool your carb, you can hear your vent gurgling. \\
@@ Line 341: / Line 346: @@
 Below, a fuel boiling problem was found in a 77 XLCH by XLF member, gemeinschaft. \\
-<blockquote>I went for a ride yesterday, it was great. Then, I smelled gasoline. I noticed gas coming out of the carb after I stopped. ((gemeinschaft of the XLFORUM http://xlforum.net/forums/showthread.php?t=496913&page=3)) \\
+<blockquote>I went for a ride yesterday, it was great. Then, I smelled gasoline. I noticed gas coming out of the carb after I stopped. ((gemeinschaft of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/72243-boiling-gasoline/page3?t=496913&page=3)) \\
 I double checked and yes, the petcock was turned off. I looked at the fuel filter and there were bubbles as the gasoline was at a rolling boil (in the clear tube fuel filter). \\
 I backed off and waited for a while and pretty soon it all evaporated. \\
@@ Line 347: / Line 352: @@
 The fuel line literally touches the fins of the rear cylinder and then goes back up to the carb. \\ </blockquote>
-|  This fuel line is in the lower "V" and touching the cylinders. Bubbles were found in the filter. ((photos by gemeinschaft of the XLFORUM http://xlforum.net/forums/showthread.php?t=496913&page=3))   ||
+|  This fuel line is in the lower "V" and touching the cylinders. Bubbles were found in the filter. ((photos by gemeinschaft of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/72243-boiling-gasoline/page3?t=496913&page=3))   ||
 |{{:techtalk:ih:carb:boiling_gas_1_by_gemeinschaft.jpg?direct&300|}}|{{:techtalk:ih:carb:boiling_gas_2_by_gemeinschaft.jpg?direct&300|}}|
 **Possible fixes to keep the fuel line away from the engine**: \\
-  * You can route the line so it avoids the heads and cylinders as best you can. ((Moon Wolf of the XLFORUM http://xlforum.net/forums/showthread.php?t=766794)) \\ You can use a longer or shorter line to allow you some flexibility in routing. \\ You want a steady downward slope from the petcock to the carb eunning gravity type petcocks.
+  * You can route the line so it avoids the heads and cylinders as best you can. ((Moon Wolf of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/93180-heat-shield-for-your-fuel-line?t=766794)) \\ You can use a longer or shorter line to allow you some flexibility in routing. \\ You want a steady downward slope from the petcock to the carb eunning gravity type petcocks.
   * Use fuel line with braided stainless-steel sheathing to protect the rubber hose from heat. \\ If your fuel hose melts and spills gas onto the motor, you won't soon forget it.
   * Slip a length of coiled wire (or a spring) over the braided fuel line where it goes between the jugs. \\ This has been done on everything from hot rods to airplanes for longer than anyone can remember.
-  * You can take the spiral wire from a paper notebook and stretch it some and run the fuel line through it. \\ You just want to keep it from touching the cylinders/heads. ((jharback of the XLFORUM http://xlforum.net/forums/showthread.php?t=766794))
+  * You can take the spiral wire from a paper notebook and stretch it some and run the fuel line through it. \\ You just want to keep it from touching the cylinders/heads. ((jharback of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/93180-heat-shield-for-your-fuel-line?t=766794))
   * Use clothes pins on the fuel line to create some space for the line.
-|  Clothes pins attached to fuel line for separation. ((photo by JonesL of the XLFORUM http://xlforum.net/forums/showthread.php?p=5840490#post5840490))  |
+|  Clothes pins attached to fuel line for separation. ((photo by JonesL of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/200399-bendix-insulator-block#post4425181))  |
 |{{:techtalk:ih:carb:clothes_pin_separation_for_gas_hose_by_jonesl.jpg?direct&300|}}|
@@ Line 385: / Line 390: @@
 Some Sportster owners say they have never needed them and others use them regularly. \\
 **Argument for using the spacer**: \\
-((photo by Robicycle of the XLFORUM http://xlforum.net/forums/showthread.php?t=1663198&highlight=keihin+bowl)) ((photo by Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=276157&page=3)) {{ :techtalk:ih:carb:keihin_butterfly_carb_6_by_hopper.jpg?direct&300|}} \\ {{ :techtalk:ih:carb:keihin_butterfly_carb_4_by_robicycle.jpg?direct&300|}} \\
+((photo by Robicycle of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/155008-weird-keihin-carb-problem?t=1663198&highlight=keihin+bowl)) ((photo by Hopper of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/55576-how-to-tune-keihin-carbs-links/page3?t=276157&page=3)) {{ :techtalk:ih:carb:keihin_butterfly_carb_6_by_hopper.jpg?direct&300|}} \\ {{ :techtalk:ih:carb:keihin_butterfly_carb_4_by_robicycle.jpg?direct&300|}} \\
-The Phenolic fiber spacer helps with hot idle or starting problems. One infuriatingly simple thing that affects idle, starting and carb farts when your engine is hot, is this phenolic fiber spacer. ((Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=276157&page=3)) It's between the carb and manifold, which some models had and others did not. It stops engine heat from flowing into the carb. If your model doesn't have one of these stock, you can cut one out of a sheet of fiber about 3/16" thick. JP Cycles or others sell one that is a bit thicker and might work even better. There should be a gasket on each side of the spacer while still using the rubber O-ring on the carb flange. Of course, make sure both the carb flange and the manifold are filed nice and flat with a 10-inch flat file first. Without it, your carb can get too hot to touch within minutes of the bike being parked with a hot engine. Even the air filter gets hot. There is a lot of heat flowing from the heads, up the manifold and into the carb which makes it hard to start and idle rough. The heat vaporizes the fuel in the float bowl and it can boil and come out the overflow tube at the bottom of the float bowl. This also means the tiny amount of fuel trying to go through the idle adjuster screw and into the carb throat can also vaporize. Fuel going into the engine needs to be tiny globules of liquid fuel, not vapor. Putting a heat-blocking spacer on is really worth the effort if you ride a lot in city traffic. (where idling at the lights will allow heat to flow into the carb while there is no cooling wind) With a kick only XLCH, the easier hot starting is a Godsend. \\
+The Phenolic fiber spacer helps with hot idle or starting problems. One infuriatingly simple thing that affects idle, starting and carb farts when your engine is hot, is this phenolic fiber spacer. ((Hopper of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/55576-how-to-tune-keihin-carbs-links/page3?t=276157&page=3)) It's between the carb and manifold, which some models had and others did not. It stops engine heat from flowing into the carb. If your model doesn't have one of these stock, you can cut one out of a sheet of fiber about 3/16" thick. JP Cycles or others sell one that is a bit thicker and might work even better. There should be a gasket on each side of the spacer while still using the rubber O-ring on the carb flange. Of course, make sure both the carb flange and the manifold are filed nice and flat with a 10-inch flat file first. Without it, your carb can get too hot to touch within minutes of the bike being parked with a hot engine. Even the air filter gets hot. There is a lot of heat flowing from the heads, up the manifold and into the carb which makes it hard to start and idle rough. The heat vaporizes the fuel in the float bowl and it can boil and come out the overflow tube at the bottom of the float bowl. This also means the tiny amount of fuel trying to go through the idle adjuster screw and into the carb throat can also vaporize. Fuel going into the engine needs to be tiny globules of liquid fuel, not vapor. Putting a heat-blocking spacer on is really worth the effort if you ride a lot in city traffic. (where idling at the lights will allow heat to flow into the carb while there is no cooling wind) With a kick only XLCH, the easier hot starting is a Godsend. \\
 **Here are some part numbers for the different insulator blocks used on 4 stroke Harleys**. \\
-There is no known insulator block that was factory installed on a Bendix Carb. \\
+There is no known insulator block that was factory installed on a Bendix Carb as used on Sportsters. \\
   * 27412-57 for 57-65 XL FL, FX. (Linkert)
@@ Line 399: / Line 404: @@
   * 27003-86A for 86-87 XL (Keihin butterfly)
   * 29266-86 plastic, for 86-87 XL (Keihin butterfly).
 ====== Swapping to a Keihin CV Carb ======
 See [[techtalk:ref:carb09|Ironhead - Installing a Keihin CV Carb]] in the REF section of the Sportsterpedia. \\

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