Hey guys I know there's alot of these posts already but I need some input right away!... These are my results in my GSR with USDM P73 pistons...
Cylinder 1 = 270 psi
Cylinder 2 = 270 psi
Cylinder 3 = 255 psi
Cylinder 4 = 280 psi

Thanks for looking!

 

come'on guys!

 

as long as your variance isnt more than 28, you should be fine. you're pretty close though, btw cyl 3 and 4, your variance is 25. i think cyl 1, 2, and 4 look fine. cyl 3 is cutting it close though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sabotage7 &raquo;</TD></TR><TR><TD CLASS="quote">as long as your variance isnt more than 28, you should be fine. you're pretty close though, btw cyl 3 and 4, your variance is 25. i think cyl 1, 2, and 4 look fine. cyl 3 is cutting it close though.</TD></TR></TABLE>

so it's the highest number and the lowest number that can't be 28?

 

all of them should be within 28psi of each other. youre highest and lowest numbers just happened to be next to each other!

 

Well, I think it's important to explain where you got the 28. There should be no more than 10% variance between any of the cylinders. If there is, then you may have a problem. Remember that gauges aren't always 100% accurate (in fact they rarely are) so it's important to gauge the relative difference between the cylinders, rather than wonder why your B18 didn't put out as much compression as your buddy's B18.

Hope that helps!

 

the 28 came out of both my haynes and factory acura manuals.