Compression Test #'s to CR?
Thread Starter
Joined: Mar 2002
Posts: 91
Likes: 0
From: Islamorada, Florida, USA
Compression Test #'s to CR?
I just bought a compression tester and got these numbers:
#1 270
#2 265
#3 270
#4 272
This was with a warm engine, WOT & fuel pump disabled. When I bought the car I was told that the CR was 11.1:1 but have had no way to verify it. The motor has about 24k miles and is a B18C1 bottom end from a '96 GS-R with B16A pistons & new OEM rings, a B16A head with CTR cams, Portflow inner & ITR outer springs, OEM head gasket. The question is: Can the ACTUAL compression ratio be calculated from these compression numbers?
[Modified by ShootingStar, 9:19 PM 8/31/2002]
[Modified by ShootingStar, 2:19 AM 9/1/2002]
#1 270
#2 265
#3 270
#4 272
This was with a warm engine, WOT & fuel pump disabled. When I bought the car I was told that the CR was 11.1:1 but have had no way to verify it. The motor has about 24k miles and is a B18C1 bottom end from a '96 GS-R with B16A pistons & new OEM rings, a B16A head with CTR cams, Portflow inner & ITR outer springs, OEM head gasket. The question is: Can the ACTUAL compression ratio be calculated from these compression numbers?
[Modified by ShootingStar, 9:19 PM 8/31/2002]
[Modified by ShootingStar, 2:19 AM 9/1/2002]
Member
Joined: Feb 2002
Posts: 1,867
Likes: 1
From: T Town, G35Land
Re: Compression Test #'s to CR? (gsrroots)
That is pretty good. I have that same head/block/piston combo and my compression is about 225 across the board. Sounds like you have a healty motor. And No, there really isn't a direct correlation between dynamic compression (PSI) and static compression (CR)
Thread
Thread Starter
Forum
Replies
Last Post
MNsnowdaboy
Drag Racing
2
Jul 22, 2004 08:59 PM