Ford Focus Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
19 Posts
Discussion Starter #1
Did a compression test today on my svt that now has 11 to 1 compression, I've been told until the pistons break in that a compression test right now will not be accurate. Reasoning for asking that when I did the compression test it only read 120!!! So I am just wondering if that is true and what 11 to 1 should read???????

Thanks
 

·
Registered
Joined
·
836 Posts
Did you have someone put the throttle wide open when you did the compression test? Did you keep turning the engine over until the needle stopped going up? If not, then do what i said and try again........Russell

[ 02-05-2003, 05:41 AM: Message edited by: Russell ]
 

·
Registered
Joined
·
2,434 Posts
Well assuming that you're 120 is psi an asmosphere is 15psi so divide that and get 8. It would seem that you are running like 8 or 9 to 1 compression, but who knows if the test was done correctly or not, or if that's a normal reading for the SVT.
 
1 - 3 of 3 Posts
Top