clearancing #8 piston for 408, how safe?
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From: Kansas City, KS
clearancing #8 piston for 408, how safe? the diamond pistons I got are preclearanced for #8. how safe is this and do you have to custom order pistons in order to not clearance them for a 6.0L iron block 408??
my builder is warning me pretty stongly that this isn't the best idea especially when I put a dual stage 100/100 shot on it.
he clearanced the back boss of my JE pistons for my 383 to a thickness of .095 and the pin was cracking on #8 after 50k miles and about 150 passes.
these diamonds are clearanced to .050 thickness on the pin boss...
is ANYONE else using clearanced pistons for a 4" crank and if so are you spraying or having any issues with it??
my builder is warning me pretty stongly that this isn't the best idea especially when I put a dual stage 100/100 shot on it.
he clearanced the back boss of my JE pistons for my 383 to a thickness of .095 and the pin was cracking on #8 after 50k miles and about 150 passes.
these diamonds are clearanced to .050 thickness on the pin boss...
is ANYONE else using clearanced pistons for a 4" crank and if so are you spraying or having any issues with it??
Last edited by 383ss; Sep 9, 2004 at 06:24 PM.
Most people are using Diamonds on this board. We have run a ton of these pistons and have never had a problem. You will be fine. Put it this way we have sprayed 300hp mutiple times on Fstr-thanu's car with out ever having a problem. Call Diamond and see what they say.
Thanks
Thanks
Thread Starter
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From: Kansas City, KS
thanks for the response. I will call diamond tomorrow, but they are trying to sell thier product. I wanted some real world experience.
thanks!!
you are talking about the off the shelf pistons that are pre-notched, I'm assuming
thanks!!
you are talking about the off the shelf pistons that are pre-notched, I'm assuming
Hey 383ss, would you happen to have a pic of your #8? I have a set of Diamonds and understand that the #8 is supposed to be clearanced already, but that it's hard to notice. I cannot tell the difference between my pistons, but maybe a pic would help.
Thread Starter
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iTrader: (14)
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From: Kansas City, KS
no pic of #8. it's at the machine shop 3 hrs away. It is clearanced, I'm concerned about how much it effects the strengeth and reliability of it under major abuse.
Launching!
Joined: Dec 2001
Posts: 237
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From: Raleigh, NC
Originally Posted by LOnSLO
The clearancing, on my #8 anyway, was deep enough, but it wasn't far enough over. Had to take the grinder to it. Wasn't fun cutting on a brand new custom nitrous piston.
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FormerVendor
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From: Houston, Tx.
Originally Posted by 383ss
the diamond pistons I got are preclearanced for #8. how safe is this and do you have to custom order pistons in order to not clearance them for a 6.0L iron block 408??
my builder is warning me pretty stongly that this isn't the best idea especially when I put a dual stage 100/100 shot on it.
he clearanced the back boss of my JE pistons for my 383 to a thickness of .095 and the pin was cracking on #8 after 50k miles and about 150 passes.
these diamonds are clearanced to .050 thickness on the pin boss...
is ANYONE else using clearanced pistons for a 4" crank and if so are you spraying or having any issues with it??
my builder is warning me pretty stongly that this isn't the best idea especially when I put a dual stage 100/100 shot on it.
he clearanced the back boss of my JE pistons for my 383 to a thickness of .095 and the pin was cracking on #8 after 50k miles and about 150 passes.
these diamonds are clearanced to .050 thickness on the pin boss...
is ANYONE else using clearanced pistons for a 4" crank and if so are you spraying or having any issues with it??
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