DECK HEIGHT?
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: DECK HEIGHT? (Twin_Turbo)
The only accurate way is to install the pistons and measure from the deck of the block down to the piston dome. I put the engine together , take this measurement then take the motor back apart and take the block in to cut this amount off the block. I like to zero deck my blocks.
Two identical engines except for the deck height the one with zero deck height will put out a bit more power then the other one.
Two identical engines except for the deck height the one with zero deck height will put out a bit more power then the other one.
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
Re: DECK HEIGHT? (norvalwilhelm)
Only problem with zero deck height.......if the need ever arises for a rebuild down the road, and the block needs another decking, you're at your limits. I like the piston to be .002 in the hole...yea, you give up a little bit of power, but in the scheme of things, the power loss is chump change, plus you have a safety net for another deck cleaning, should that need ever arise.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: DECK HEIGHT? (GDaina)
I like the piston to be .002 in the hole
What is .002 for a clean up? My pistons were .032 on one side and .030 on the other. I had the block decked that amount. As for increasing the piston to head clearance I could always use a thicker head gasket. I run .040 copper gasket with .040 stainless O rings.
What is .002 for a clean up? My pistons were .032 on one side and .030 on the other. I had the block decked that amount. As for increasing the piston to head clearance I could always use a thicker head gasket. I run .040 copper gasket with .040 stainless O rings.
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
Re: DECK HEIGHT? (norvalwilhelm)
If you you have to use a thicker head gasket, that negates the benefits of a zero deck height, doesn't it? If you leave room for future clean up, and are able to use a thinner gasket....anyhoooo....like anything else, 10 different people, 10 different opinions, and not one of those opinions is wrong, just personal preferences.
Burning Brakes
Joined: Feb 2004
Posts: 958
Likes: 0
From: shawnee ks
Re: DECK HEIGHT? (GDaina)
We build all our racing engines with zero deck height ,but of course if we need a cleaning up , nothings usually left.Both ways work ,We use diff head gaskets all the time to compensate for comp& cam changes.Above posts is a fine way to ck deck height.
