1988 Chevrolet Cheyenne Repair Question
Mileage: 107,000 miles.
Chevrolet Cheyenne Piston Problem
Answer
If the crank needs cut, check into getting a new one. You will have about the same money into it. If you decide to keep the one you have and have it cut, you need to cut it until there is no more damaged surface. I don't know if 10 thousands will do it. The machine shop will know. Then, you have to get bearings to fit to whatever amount was cut.
what all will need to be done to the block when sent off to machin shop. i think the crank is ok but do i need to get it ballanced or turned. all i no is that cylinder walls are goin to get bored 30
over.
Just have them bore the cylinders for you. You will have to get new pistons for the size change, As far as the crank, make sure it is in good condition and doesn't require being cut.
the part of crank where the rod bearings spun looks pretty good. but is there suppose to be any kind of stagger on the crank between where the two rods connect. i pulled all pistons and rods out then examined crank for any metal to metal contact or heat marks and all looked pretty good but the journal that connects the 3rd and 4th piston looked staggered a little. where the 3rd rod connects to the crank looks a little higher on one half than where the 4th one goes, kinda like a little lip half way around that journal. theres not any signs of heat marks or metal to metal it almost looks normal but as far as i no its suppose to be a flat surface all the way across all journals. any clues?