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Old 02-06-2006, 02:53 PM   #1
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Default Pinch question

Ok so here is my question, i race 1/10th turing cars and know about how much pinch my motors should have after a gallon or so. Im getting into 1/8th scale off road, but my .21 a novarossi P5X after a gallon feels like it has a lot less pinch that my .12's have in the past.

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Lee
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Old 02-06-2006, 06:07 PM   #2
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An engine is not fully broke in until all noticable pinch is gone. If you are talking about compression that is a different thing. My P5X did'nt break in untill is hit the 1 1/2 gallon mark and now I can' t control the stupid thing!
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Old 02-06-2006, 06:17 PM   #3
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regardless the pistons;sleeve fitting, if it's tight or loose..........

if your engine runs fast and has a consistent idle and if there's no play on conrod bushings, crankshaft pin and bearings............don't worry about pinch........
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Old 02-06-2006, 06:30 PM   #4
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Thanks for the info. I was just at the track and this motor is getting faster and faster. Im usually an onroad guy, i got a buggy because we have a good track here, just wanted to make sure i wasnt messing up my new motor.
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