Can you cut a valve relief .060 deep in a stock piston and not cause problems?
01-08-2005, 09:32 AM
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Can you cut a valve relief .060 deep in a stock piston and not cause problems? Just want to make sure it's not going to weaken the piston dome to the point of potential problems.
01-08-2005, 09:29 PM
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Originally Posted by Timberwolf
Just want to make sure it's not going to weaken the piston dome to the point of potential problems.
01-08-2005, 09:58 PM
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Timberwolf, I would say its only smart to consider your combination. If you need to cut .100 and your trying to spray a 200 shot on a stock bottom your not playing it safe, more like roulette. .060" and NA "shouldn't" be a problem....operative word is shouldnt. Remember all the parts to these engines are cast, hyperuetectic etc so there may be some flaw in the materials as well causing one person who cuts a .060" to break a piston. Just a thought, not trying to scare you or anyone. Just the old saying, what works for one person may not work for you.
Good luck.
Charlie
Good luck.
Charlie
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01-09-2005, 12:49 PM
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Originally Posted by Timberwolf
ok, sounds like I should be safe. I'm running 653 lift on 5.3 heads, so I am guessing I am going to need between a .060 and .080 cut in them
What kind of lobe are you talking about? I run a .651" lift 239 duration LSK comp lobe. Like Louis said, without the rest of the specs nothing will be known about your p/v clearence.
01-09-2005, 01:31 PM
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cam motion solid roller cam. Specs are:
Dur @ .050 240 intake and 249 exhaust
Lift is 658 intake and 649 exhaust (1.75rr)
Lobe seperation 112
Intake centerline 108
Hot lash .010
Dur @ .050 240 intake and 249 exhaust
Lift is 658 intake and 649 exhaust (1.75rr)
Lobe seperation 112
Intake centerline 108
Hot lash .010
