Should fly cuts be equal???

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Apr 19, 2010 | 08:24 PM

MUSTANGBRKR02

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Should fly cuts be equal???

I've never dealt with fly cutting pistons, but while pulling a motor apart i noticed that the fly cuts from piston to piston are noticebly different sizes. I would think this would effect compression and AFR from cylinder to cylinder.

Is this correct?

Apr 19, 2010 | 08:34 PM

Bluewire

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Are you sure it is flycut? or is it valve to piston contact?

Apr 19, 2010 | 08:41 PM

MUSTANGBRKR02

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The pistons are fly cut they are just noticeably different from piston to piston.

Apr 19, 2010 | 08:46 PM

bigboykilroy

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They should be the same in size if done properly. Post up a pic.

Apr 19, 2010 | 08:48 PM

MUSTANGBRKR02

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I will have to snap pics tomorrow morning when i yank the engine. I will post up then. I didn't think it looked right but like I said first time dealing with them.

Apr 19, 2010 | 10:04 PM

Paint_It_Black

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Should they be? yes. If they are off a bit from one to the other are you going to notice it as an issue? no. A flycut is only a CC or 2. If you are off by one here and there, you are changing the compression in that cylinder by 1/5th of a point. It will still run fine but it's sloppy work.

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