Why "zero deck" custom pistons?

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Oct 19, 2005 | 09:53 PM

#21

mattr228

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From: GI, NE

Quote:

Originally Posted by Zippinzee

The zero deck is to keep the compression at a reasonable level with the 408 cubic inches of displacement. If you run the pistons .008 out of the hole and use a .040 gasket on a 408 I am pretty sure the compression will be too high.

that would affect it so much , somewhere around .21 gain in compression

not as dramatic as you are making it sound

Oct 19, 2005 | 09:58 PM

#22

SStrokerAce

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From: NY

The quench depends on the material in the block... iron and Al have different quench needs.

Bret

Oct 20, 2005 | 01:50 AM

#23

Keith

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From: Mefis

I know it's 2 strokes and all, but there is some good infor regarding quench here:

http://www.aircooled-rd.com/squish1.htm

Oct 20, 2005 | 01:04 PM

#24

Zippinzee

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Quote:

Originally Posted by mattr228

that would affect it so much , somewhere around .21 gain in compression

not as dramatic as you are making it sound

I believe it is closer to .30 but my point is there is going to need to be some adjustments made to lower the compression for a street car and most definitely on a forced induction so why shoot your self in the foot and start with a piston .008 out of the hole. I am pretty sure that is what the piston manufacture was thinking.

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