i believe you're right about the sleeve material.
the crank spins around in the bottom of the block, or rather between the bottom of the block and the bearing caps. the tolerances are very crucial. when you sleeve the block, it distorts it enough that the crank and bearings no longer sit perfectly in the block. line boring is drilling out along the length of the bottom of the block and bearing caps so that it's all in a perfect line again, ready for new bearings and the crank.
Quote:
Originally posted by kingxsquid
GE uses ductile iron not steel right? and also, what is meant by line boring and why is it needed?
thanks again
|