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compression specs 135 merc

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Re: compression specs 135 merc

by 77viper » Aug 07, 2009 9:51 pm

lundocno wrote:leakdown test tell u nothin really all that really shows is the there is a lil wear

but yeah them specs are good for stock heads
Can you eplain how a leak down isn't a better test that compression.

Re: compression specs 135 merc

by frogII » Aug 07, 2009 1:33 pm

Thanks for the info
my clymer book does not show any numbers as a guideline

Re: compression specs 135 merc

by lundocno » Aug 07, 2009 1:16 pm

leakdown test tell u nothin really all that really shows is the there is a lil wear

but yeah them specs are good for stock heads

Re: compression specs 135 merc

by 77viper » Aug 03, 2009 7:06 pm

That sounds about right for stock heads. If in dought take a leakdown test.

compression specs 135 merc

by frogII » Aug 03, 2009 4:11 pm

Looking for compression specs
1987 135hp all stock Mercury
my gauge shows 118-120 , 2# varience between all 6 holes
weak battery , cold engine , throttle open
Thanks

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