.020 in the hole too much
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From: Port Tobacco, MD
.020 in the hole too much I'm at the middle stages of my motor build and just found out that my pistons are going to be in the hole .020. It works out ok for compression since I am trying to get it as low as I can, using the pistons in the hole .020 will lower my compression slightly to 8.64:1. Is there a max number they can be in the hole on a big boost motor?
Phil
Phil
out of curiosity, how would combustion chamber design affect a compression height issue like this? would a smaller chamber solve the quenching issues, or would it need to be a very shallow chamber with no quench area? (I don't think any LS heads currently available have a chamber like that though)
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From: Port Tobacco, MD
Originally Posted by DeltaT
Is there a quench ring around the entire perimeter of the piston, or is it still a partial dish?
Jim
Jim
Phil
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From: Port Tobacco, MD
Originally Posted by ILLINTENT
out of curiosity, how would combustion chamber design affect a compression height issue like this? would a smaller chamber solve the quenching issues, or would it need to be a very shallow chamber with no quench area? (I don't think any LS heads currently available have a chamber like that though)
Phil
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From: Greenwood, IN
Originally Posted by Phil99vette
Yep, Howard's Billet Rods.
They were called Power Detroit Rods when I bought them, rated 1000+ HP. They were from Competition Products and they look exactly like and have the exact same description but seem to be called Howards now. Maybe I'm wrong or they improved them now, hopefully they did.
What heads, and how do(es) the head quench area(s) match up to the piston. Right now I'm thinking that you have so little quench areas that what you have will be critical - have you thought of getting a .020" skim off the block? What's the end use, turbo?
Jim
Jim
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From: Port Tobacco, MD
Thanks jeff, I kinda thought the same thing, we ended up decking the block .010 and using a .030 MLS gasket with a SS o ring(.006-.007) & reciever groove in the head. The pistons sit .010 in the hole. I still have my .040 quench and can deck the block another .005 to .010 if necessary.
