stock compression

Reply Subscribe

Thread Tools

Search this Thread

09-03-2008, 04:35 PM

mattj1234

Thread Starter

Join Date: Jan 2008

Posts: 35

stock compression

What's the compression supposed to be on an 03 cobra in psi? I'm getting a compression test on one I might buy and wanted to make sure nothing was out of whack. Thanks

Also, if the car had been pullied and damgaed and then put back to stock would it show up on the test?

Last edited by mattj1234; 09-03-2008 at 05:15 PM.

09-04-2008, 11:12 AM

mattj1234

Thread Starter

Join Date: Jan 2008

Posts: 35

please help

09-04-2008, 11:59 AM

cohhbra

2nd Gear Member

Join Date: Sep 2008

Location: Virginia

Posts: 193

i think i read somewhere, and i'm not 100% sure but they were supposed to be around 175psi

09-04-2008, 03:30 PM

Furinox

4th Gear Member

Join Date: Feb 2006

Location:

Posts: 1,667

it will vary slightly from car to car. just make sure the numbers for all cycls are pretty close to one another.

09-04-2008, 10:19 PM

P.S.I.cho

4th Gear Member

Join Date: Mar 2005

Location:

Posts: 1,123

it varies from car to car and altitude/barometric psi. run compression on all 8 cylinder like stated and make sure no cylinders are more then 20% apart, ford says even more then 20% is in specs but i prefer to use 20%