Unconventional way to re-pinch a piston sleeve?
01-31-2015, 10:15 PM
#1
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Unconventional way to re-pinch a piston sleeve?
Has anyone here successfully re-pinched a piston sleeve using standard tools?... like a regular vice grip? I have to 20 year old engines which I could afford to tamper with one. Just wondering how hard it would be to do this.
02-01-2015, 08:45 AM
#4
Have a new piston made is probably the best thing to do if you covet the engines that much. Trying to re-pinch a liner with "standard tools" doesn't work. I tried it. You cannot keep the liner round when you do the hose clamp trick or the like. At best, you need a 3 or 4 jaw lathe collet and a lathe chuck so you can apply pressure evenly around the circumference of the liner ensuring it stays round. But in reality, the liner doesn't wear out - the piston usually does. Usually better off to junk the engine and get a new one if you don't have the means to make a piston or are able to find a new P/L set.
02-01-2015, 01:14 PM
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Have a new piston made is probably the best thing to do if you covet the engines that much. Trying to re-pinch a liner with "standard tools" doesn't work. I tried it. You cannot keep the liner round when you do the hose clamp trick or the like. At best, you need a 3 or 4 jaw lathe collet and a lathe chuck so you can apply pressure evenly around the circumference of the liner ensuring it stays round. But in reality, the liner doesn't wear out - the piston usually does. Usually better off to junk the engine and get a new one if you don't have the means to make a piston or are able to find a new P/L set.
