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Old 04-22-2009, 06:56 AM   #1
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What is done to an engine when it is pinched?
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Old 04-22-2009, 07:16 AM   #2
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The sleeve is compressed so that the piston has a tight fit like when it was new. It restores compression in a worn out engine.
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Old 04-22-2009, 07:18 AM   #3
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Originally Posted by cassidy View Post
What is done to an engine when it is pinched?
They squeese the sleeve very precisly to get it back around a new engine's specs. Basically what this does is extend the life of the engine by restoring some compression. It is typically used if your engine is worn out, and you don't have the money for a new one, though some use it to extend the life of all of thier engines. This is only done to engines that are lacking compression. Also you don't want to pinch an engine that is worn out in other ways than compression(bearings, rod, crankshaft, etc.). Doing so could cause the rod to snap.
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Old 04-22-2009, 07:32 AM   #4
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does the engine have to be disassembled to be pinched?
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Old 04-22-2009, 07:48 AM   #5
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Yes just send the piston, linear conrod.

i have had several pinched, key thing to remember is you have to re-break them in again.
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Old 04-22-2009, 11:35 AM   #6
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What is done to an engine when it is http://www.rctech.net/forum/classic_...nk.gifpinched?
Yep,
This is something that should be done to a motor that has lost compression. Normally I have my backup and practice engines pinched until they pop.

If your going to a big race, its probably better to run a non-pinched motor. Pinched motors are ok, but in my opinion dont quite have the reliability of a new motor.
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