Differences
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techtalk:ref:engmech05k [2021/07/26 03:20] hippysmack [Drilling the Drainback Hole] |
techtalk:ref:engmech05k [2021/07/26 05:24] hippysmack [Install the Rocker Boxes] |
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| The oil is supposed to settle out in this little drain chamber and drain back to the motor thru the tiny hole in the cavity. \\ | The oil is supposed to settle out in this little drain chamber and drain back to the motor thru the tiny hole in the cavity. \\ | ||
| Crankcase air/oil mist rises up in each rocker box, hits the umbrella thus separating the oil from the air at that point. \\ | Crankcase air/oil mist rises up in each rocker box, hits the umbrella thus separating the oil from the air at that point. \\ | ||
| - | In theory, collision is the recipe for separating the oil mist from the air. \\ | + | By design, collision is the recipe for separating the oil mist from the air and the umbrella valves are the last collision point in the system. \\ |
| Most of the oil falls off the bottom of the umbrella back into the lower rocker box section where it falls back down into the engine. \\ | Most of the oil falls off the bottom of the umbrella back into the lower rocker box section where it falls back down into the engine. \\ | ||
| The residual air pressure runs past the umbrella, out a hole in each middle rocker section to a hollow bolt in each head (breather vents). \\ | The residual air pressure runs past the umbrella, out a hole in each middle rocker section to a hollow bolt in each head (breather vents). \\ | ||
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| ===== Install the Rocker Boxes ===== | ===== Install the Rocker Boxes ===== | ||
| + | Before installing the rocker boxes back on the motor, make sure they are clean from all dirt, debris, shavings etc. \\ | ||
| + | It won't hurt to spray them down with carb cleaner etc. before installing the umbrellas. The instructions say to install new umbrellas anyway. \\ | ||
| + | Make sure both the umbrellas and their now counterpart Slobber Stoppers goes on the intake side on each cylinder. \\ | ||
| + | Visually inspect that either gasket does not pinch or pooch out after you tighten up the cover bolts. \\ | ||
| + | If so, loosen or remove the cover and tighten them again or it'll leak oil. \\ | ||
| + | **Cover bolt torque is 10-13 in-lbs** (FSM says ft-lbs but this is wrong). \\ | ||
| + | OEM cover bolts have a washer pressed onto the bolt with a corresponding fiber washer added for each bolt. \\ | ||
| + | Some aftermarket kits have the fiber washers and copper washers. Use either / or but not both types of washers together. \\ | ||
| + | If reusing fiber washers, (not recommended), check them to make sure the fiber hasn't already began imploding. If so, do not use the offending washers. \\ | ||
| + | Vacuum from the rocker box area will eventually implode the fiber washers (looks like an O-ring around the threads and the washer OD is smaller than new ones). \\ | ||
| + | If there are any air leaks around the cover bolts, even with the Slobber Stoppers added, you may still get oil out the breather vent(s). \\ | ||
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