Why "zero deck" custom pistons?

Reply Subscribe

Thread Tools

Search this Thread

Oct 19, 2005 | 09:53 PM

#21

mattr228

Launching!

iTrader: (10)

Joined: Dec 2004

Posts: 287

Likes: 0

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

Banned

iTrader: (2)

Joined: Mar 2002

Posts: 2,344

Likes: 2

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

TECH Addict

Joined: Oct 2002

Posts: 2,785

Likes: 97

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

Launching!

Joined: Nov 2003

Posts: 210

Likes: 0

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.

Reply Subscribe