my engine compression test shown as below. So weried, any one can tell me why? Thanks alot

 

Cant judge from the info..How many miles? since all cylinders are within 10% of eachother wear appears to be even. With that said looks like all is well. I take it you notice no issues that caused you to look at compression--you just decided to check it?

 

Is the motor built?

 

That's fairly low, but they're all within specification of each other. Start an engine fund and drive that one till it goes. You have no idea how long it may last and there are a ton of variables with compression tests.

 

Evo 9? Cams? What compression pistons?

 

it has roughly 60k miles on it

 

yea, its evo 9, just rebuild the long block, fully ported and tomei cams phase 2 and solid lifts, short block is stock

 

just the long block been rebuild

 

my evo 9 has about 105 on all cylinders... 272 cams (low cause the mivec thing)

makes 523, 430 on a mustang dyno.
uses just a little oil.

you are fine.

 

Thx bro. I will check it out

 

I had Kelford 282 cams on my build and my compression was 110. I was so concerned that I swapped back to the stock cams and retested. The compression immediately jumped back to 130 just from a cam swap.

 

leakdown > compression test, so i'd say you are good to go.

 

My car on s3's is 155 across all cylinders. Was 180 with stock cams