SR20det Compression TEST!!!

[komedy]

hi did a compression test today, the shop that did my swap told me it was 150 across the board,

my friend mechanic came buy here are the results:

cylinder:

#1 140
#2 150
#3 150
#4 150

what do you think?

[smithers584]

pretty good i believe nominal is around 145 or so but dont quote me on it. was your engine warmed up and your throttle opened fully? im sure you know that could effect your numbers. looks pretty good for now though.

[SiI40sx]

since its almost the exact number all across the board, your good to go. If theyre off by a lot like 40+ psi, then worry. An almost 10 year old engine, with that high of a compression (new being 200 all across) is a good thing

[slider2828]

Do a leak down test cause 140 is low... That is a kinda bad variation.... If the engine is in good working condition it shouldn't vary more than +/- 3psi per cylinder. Mine ran right on the dot each of my cycliners.