Flycuting stock pistons dangerous?
10-15-2008, 11:21 PM
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Flycuting stock pistons dangerous? Hey all wanted to get a general opinion here
H/C combo in sig. Its been nice but Im thinking I want a bigger cam...
Which would require flycutting
Is flycutting a stock piston dangerous? I understand that the stock pistons arent as strong as forged, but is it truely a death sentence for an LS1?
H/C combo in sig. Its been nice but Im thinking I want a bigger cam...
Which would require flycutting
Is flycutting a stock piston dangerous? I understand that the stock pistons arent as strong as forged, but is it truely a death sentence for an LS1?
10-16-2008, 06:37 PM
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Depends on how deep you need to go. I was told the stock piston is about 220 thous. thick. Mine are flycut about 80 thous at the deepest portion and I have had no issues. My flycutting was required becuase of the larger intake valve I used.
10-16-2008, 09:52 PM
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did you do it yourself?
I need to do this to run a bigger cam. I might just have someone do it for me. About how much would it cost to have a shop do it?
I need to do this to run a bigger cam. I might just have someone do it for me. About how much would it cost to have a shop do it?
10-17-2008, 12:37 PM
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Here's what a .130 depth cut on a 2.02 intake valve looks like, exhaust valve is .075 stock sized valve. It helps to smooth them out and polish them up after you cut, I think the final prep is crucial to how the hold up in the end. If they last till the spring I plan on throwing a 150 shot at them 
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10-17-2008, 02:32 PM
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Im currently running the H/C combo in my sig. As it is I know Im pretty well maxed out as far as PTV clearance goes without even measuring it. Valves are 2.02 and 1.57 I believe.
Id like to run a larger cam like a torquer v2 or v3 or even something like an MS3, or preferably a custom spec cam.
Whichever way I go with a bigger cam I need to flycut.
Currently running ~11.4 static cr and around 8.4 dynamic. Cant remember what it was exactly.
02-01-2009, 10:42 PM
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I am curious if someone can post up some pictures of the apparatus being used for the flycutting? I read and hear about it, but never have seen it done on a " do it yourself" scale and im a " do it yourselfer" lol
02-01-2009, 10:47 PM
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Here's a good thread, about flycutting. Lots of pics!
https://ls1tech.com/forums/generatio...ics+flycutting
https://ls1tech.com/forums/generatio...ics+flycutting
