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Old 04-12-2013, 11:34 AM   #1
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Default Compression before FMII

I am just about to pull the trigger on an FMII kit for my '95. I had the compression checked on my 102k original motor, and got:

150 150 145 150

I know that it's great to be consistent like that, but I am worried that the numbers are a bit low compated to the 180-190 ranges that others have reported. I know it can vary between different testers, and I didn't do it myself (have done all of the work on this car myself, but this was just part of a general checkover after I bought it, done by Apex Automotive - FM's New England recommended installer), so I can't say if it was wet or dry.

Should I be concerned?
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Old 04-12-2013, 11:49 AM   #2
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I think consistent numbers are what you're really looking for, so if that's the case then you're golden. Does the motor burn any oil?
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Old 04-12-2013, 11:54 AM   #3
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No blue smoke that I've seen, though I did have to add some occasionally at first (bought it last year). Replaced a few seals and did the clutch and it seems like it is better.
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Old 04-12-2013, 12:45 PM   #4
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You're good to go!
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Old 04-12-2013, 12:59 PM   #5
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Did they do a leakdown test?
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Old 04-12-2013, 12:59 PM   #6
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Lester would have told you if it was a problem.
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Old 04-12-2013, 01:01 PM   #7
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No, no leakdown. Yeah, he said it seemed ok. Not great, but ok. I love Lester, but he doesn't exactly volunteer information.
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Old 04-12-2013, 03:22 PM   #8
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Bought it!
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