Posted by Dick L on April 05, 2017 at 09:54:26 from (50.51.119.181):
In Reply to: Tapered Shims posted by Steve@Advance on April 05, 2017 at 08:51:39:
The most wear on the bearing and crankshaft journal is on the bottom of the crankshaft at the pressure point from fire. Very little on the sides and top. You can see this with plastigage by checking at the bottom of the cap and then at 90º. Using new bearings on an unground crankshaft and shimming under the bearing insert it can be necessary to file the end of the insert to keep the ends of the bearing shell from dragging on the journal. When torqueing the rod cap it is necessary for the ends of the bearing shell to go to the only space open to make up for the shim under the shell. That space is between the inside bearing surface and the crankshaft journal. I personally used snap gauges and mic's. I never shimmed this way more than .002 because of fear. I have shimmed for this problem but never used taper shims.
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