so i was putting my pistons in my block, and as i was putting one of them in the lower oil ring slipped out of the ring compressor and put a gouge in the cylinder wall about an inch down from the top. I told my machinist of this mistake and he told me that it might need to be sleeved. I spent many hours honing it but the gouge does not get any smaller. my question to the forum and all who would like to answer is, will a sleeve be a better, more reliable, stronger, and safer choice than welding the gouge with cast iron rods and machining the wall again. many thanks for your help and input
scratch in cylinder wall
- Thread starter whitesupra87
- Start date
Guys run sleeves in V8's a lot. My 'guess' is that a sleeve would be better than welding the gouge and re-machining.
Pics...?
Pics...?
you could sell your current pistons and go next size up on oversize. Could possibly be the cheapest route..
If you gouged it enough that boreing it out to the next size is too big, youre better off finding another block
the block was bored out to 83.5mm and i was honing it with a medium grit stone made by kd tools. you can run your finger nail over it and it barely catches. The idea of going the next size up had crossed my mind but i did not know whether or not i could get a good amount of money for my pistons. They are JE and I purchased the turbo nitrous rings.
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Well even if you hone it out and its gone, look how much extra clearance your piston has... You cant use it with a scratch going down far enough that the rings will touch them, so your options are limited.
whitesupra87;1269185 said:
Still not sure what you are honing with, but if you are using anything like a spring loaded little hone that you use on a small drill, then you also run the risk of tapering the hole, or putting a finish on the wall that does not suit the piston rings.
If it was my block, I would have the machine shop re-hone the one bore hole with a real power stroke honing machine. Once the scratch is removed, measure the clearence for the piston again. If it is out of spec, then have the one bore hole resized to 84mm to match one new piston. Buying one piston will cost only about 125.00 plus the extra machining.
The other option would be to do as you thought. To rebore the entire block to 84mm, and sell your piston set to re-coup some cost.
yes you are right i was using a sprung three stone tool that goes on a power drill. when i honed i went up and down from the top to the bottom to avoid tapering the bore. But i didnt think about the part about making the walls not acceptable for the rings, but i think i will send it to the macine shop again and see if they can hone it out and if they cant i will most likely rebore the whole block. thank you all for your input and good ideas you were of great help to me
i haven't taken it to my machinist yet i have to get a lot more money first but will update when i do take it there
