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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
I wonder if the some of the plastic may have caused the piston oilers to not meter the oil to the point is if overwhelming the return side of the pump. There is a tool that can check the pressure they release at, which is something I would check.
I pulled my oil pump. Checked it, didnt find any issues. Decided to pull my cylinders due to my sumping issue. After I got the cylinders removed, not really seeing anything along the way. Visually checked the piston oil jets, had installed the S&S oil jets during the BB install. Right away I noticed the gasket hanging out from the bottom. Installation error. I missed one hole completely while installing. Its a tight space and had a bunch of rags in the case. Was worried about dropping something in there. Stupid mistake. But happy I got it figured out. Put everything back together and doesnt seem to be sumping at the moment, oil returns to the tank. Even in the instructions for the oilers it talks about gasket alignment.
Im have the s&s air cleaner, so venting internally. Also running the Trask vented trans top cover. Before I did the big bore I noticed a huge difference in amount of oil in my manifold. It was basically dry. Plan to change air cleaners and vent externally.
Not yet, haven't had time to pull the motor, will do so in a few weeks and post my findings once we've split the cases.
When you split the cases, pay attention to the oiler gasket surfaces, when the factory installs the self tapping screws, it pulls the metal up around the screw holes.
Use a new razor to scrape the gasket surface for the oilers flat, first work on just the raised areas around the holes until the lips are gone, then across the surface.
When you split the cases, pay attention to the oiler gasket surfaces, when the factory installs the self tapping screws, it pulls the metal up around the screw holes.
Use a new razor to scrape the gasket surface for the oilers flat, first work on just the raised areas around the holes until the lips are gone, then across the surface.
I'd use a countersink. I like single flute, real slow, maybe 1-2 turns of the bit, feel the surface. Building a motor, I always check threaded holes.
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