Quote:
Originally Posted by Joe-Touring
What is the consensus for minimums on thrust and non thrust surfaces? The machinist recommended 0.150 on the thrusts, and 0.100 everywhere else.
I noticed that, I am slightly apprehensive about the shop. The owner/main machinist was not the guy doing the sonic check or the sleeve removal.
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The rule of thumb I was taught was .135 MINIMUM on the primary thrust wall and .100-.110 MINIMUM on the other walls. This assumes you are using the engine for street use ONLY, are utilizing the lightest piston/pin/ rod combination you can afford and are keeping the RPMs down. The lighter the reciprocal mass the less stress on the cylinder walls.