120isn Compression test on all 4... suggestions
Oct 5, 2011, 09:07 AM
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120isn Compression test on all 4... suggestions
I decided to do a compression test on my car and the numbers I got were low from what I have seen from most evos. I got from left to right 120 122 122 130. I have 91k miles on my engine and I was hoping to make put some mods on my car, but after doing this test, is it really neccesary to do an overhaul?
I am pretty much stock, all I have is a hks intake and a walbro 255. I have 272/272 hks cams sitting in my garage waiting to put them in.
I am pretty much stock, all I have is a hks intake and a walbro 255. I have 272/272 hks cams sitting in my garage waiting to put them in.
Oct 5, 2011, 09:31 AM
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In my experience, as long as all the numbers are close, things are good. Its when you see a big drop in one or two cycs. is when you worry.
Every tester is different, even same brands can be a few psi off.
Every tester is different, even same brands can be a few psi off.
Oct 7, 2011, 10:06 AM
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Oct 7, 2011, 11:39 AM
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Stock compression is 145 cold at WOT. But you can run it fine. I have a P0011 code, my compression is 110 on all cylinders, but Im making 100 less whp bc of it.
Last edited by NewEvolutionIX; Oct 7, 2011 at 09:16 PM.
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