Quick Compression check calculation

Reply Subscribe

Thread Tools

Search this Thread

Nov 5, 2008 | 12:57 PM

tim99ws6

Thread Starter

9 Second Club

iTrader: (31)

Joined: Oct 2002

Posts: 3,175

Likes: 2

From: Nashville, TN

Quick Compression check calculation

hey guys,

I am sure someone here can run the # real quick:

Ls1 motor
.010 overbore
Flat top pistons w/ 4cc valve reliefs.
6.0 heads
Stock rods/Crank
Stock MLS gaskets

What compression would that sit at?

Nov 5, 2008 | 01:04 PM

Yellowsierra

TECH Fanatic

iTrader: (7)

Joined: Mar 2004

Posts: 1,028

Likes: 0

From: NC

Quote:

Originally Posted by tim99ws6

About 9.3-1 depending on a few things.

Nov 5, 2008 | 01:09 PM

tim99ws6

Thread Starter

9 Second Club

iTrader: (31)

Joined: Oct 2002

Posts: 3,175

Likes: 2

From: Nashville, TN

Quote:

Originally Posted by Yellowsierra

About 9.3-1 depending on a few things.

What are the few things? I would be happy to give as much info as possible. Am i crazy to try and run my flat top pistons with valve reliefs for turbo application? the piston itself is forged, but has anyone else had any success with this?

Nov 5, 2008 | 01:15 PM

Yellowsierra

TECH Fanatic

iTrader: (7)

Joined: Mar 2004

Posts: 1,028

Likes: 0

From: NC

Quote:

Originally Posted by tim99ws6

Yeah those pistons should work great... A few things would be Cylinder CC size. IF unmilled the 6.0 heads are around 71-72cc. Another factor would be how much the pistons pop out of the block. Im guessin you would be using 6.0 or 6.2L MLS head gaskets since your running 6.0L heads. 9.3-1 sounds like a great number for a Street FI car. Heres a good Compression Calculator that I use. http://www.rbracing-rsr.com/compstaticcalc.html

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last