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1. 03:28 PM - compression values (avidflyer01)
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| Subject: | compression values |
hi folks,
I would like to find out what are typical compression values on a
recent 2200; could those who measured their compressions give me their
results, together with approx engine hours and age?
as I have a problem with a leaky valve in one cylinder I carried out
some serious tests on my engine and found that on the three "good"
cylinders I have only 122psi (8.6 bar). I've heard about one engine
that at 300hrs had as much as 160psi (11.2bar), yet I also heard that
my 122psi is a reasonable compression.
My compressions were taken with a warm engine, one sparkplug per
cylinder removed, throttle fully open, good battery. Engine has 100
hrs, 2 years old (hyd lifters).
I also did a leak down test: pressure drop on good cylinders were 9%,
11% and 14%; it was 35% on the bad one.
thanksfor your help
Martin
Avid Flyer / Jab powered
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http://forums.matronics.com/viewtopic.php?p=117380#117380
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