L92 bearing clearences
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L92 bearing clearences Hi I am re building my L92, I plan on just doing a mild cam, anyways by main and rod bearing clearence is .002 which is consistent on all bearings, anyways do you think I should tighten up clearences on rods with a calico coating? The engine is pretty much a sticker
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Yeah I thought to go tighter on rods haha, it's a pretty much a sticker with mild cam, I am doing all forged internals, because I am going to supercharge it, with very low boost and probably water/meth injection to prevent detonation
With a aluminum block .002 is as loose as I would go if you want it to have oil pressure at hot idle. Rods you might want to see if you can get a set of x bearings and use 1/2 for a extra .0005 clearance.
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Verdad Gallardo I would just buy the coated bearing from clevite if you want coated bearings. Using coating to set the clearance is not the way I would do it. You will be fine where you are at
Tim
Tim
On something like this, I would set the mains and rods at about .003" and have the bearings coated by PolyDyne here in Houston. The coating drops the clearance down to about .002". Most power adders on "low boost" rarely ever stay on low boost. When that bug hits you and you swap the pulleys for more manifold pressure, the coating can be sacrificed without hurting the engine when more clearance is needed for the higher power level.