As some may know on here, I am looking at a 1g GSX this week. I plan to have a compression test done, but what kind of numbers should I look at on this atx with a .20 overbore?
Compression testing a .20 Overbore???
awild
- Status
1 - 6 of 6 Posts
Joined
·
8,393 Posts
The compression ratio is the same regardless of bore size.
Standard compression for a 1G is 164 PSI. Consider anything above 150 a blessing. Difference between cylinders should be 14 psi or less, and the service limit is 121.
Standard compression for a 1G is 164 PSI. Consider anything above 150 a blessing. Difference between cylinders should be 14 psi or less, and the service limit is 121.
Joined
·
8,393 Posts
Nope. Different size pistons have a slightly different dome/dish volume to end up with the same compression ratio.
Joined
·
8,393 Posts
Thanks for taking it upon yourself to cross-post to the advanced section anyway. 
Closed.
Closed.
1 - 6 of 6 Posts
- Status
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
