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[ 8 posts ] |
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compression on a 35 briggs
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bussterwyatt
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 compression on a 35 briggs
what compression should i be getting on a on a 35 briggs ,, i ran a compression test both cylinders had 165. passed leak down with flying colors but.......the plugs did look wet
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Wed Dec 16, 2009 4:43 pm |
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JpEater
MMT Pro Member
Joined: Tue Sep 22, 2009 8:02 pm Posts: 245 Location: Augusta, Ga.
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 Re: compression on a 35 briggs
I say that sounds good to me.
_________________ Aucoin 18'x48'' Bateau, 30hp GD Longtail.
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Wed Dec 16, 2009 5:04 pm |
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deadbird8
MMT 1000 Club
Joined: Wed Feb 04, 2009 7:50 pm Posts: 3833 Location: Old East Dallas, Texas
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 Re: compression on a 35 briggs
Really depends on the tool you are using, how often it was calibrated, how the test was done (open throttle) etc....
Most will tell you to ensure both sides are within 10% of each other. If yours are even on both sides using the same meathod on each then it you should be good.
_________________ Excel 1851F4 w/ MB35HD+R CDI with a little bit of this and little bit of that
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Thu Dec 17, 2009 6:31 am |
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JpEater
MMT Pro Member
Joined: Tue Sep 22, 2009 8:02 pm Posts: 245 Location: Augusta, Ga.
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 Re: compression on a 35 briggs
yeah I usually run the fuel out of the carb. pull the kill switch and check it at WOT.
_________________ Aucoin 18'x48'' Bateau, 30hp GD Longtail.
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Thu Dec 17, 2009 8:37 am |
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stanco
MMT Pro Member
Joined: Fri Feb 13, 2009 12:06 am Posts: 260
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 Re: compression on a 35 briggs
165 is actually a little high for a stock motor. Not an issue at all though.
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Sun Dec 20, 2009 10:04 pm |
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bussterwyatt
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 Re: compression on a 35 briggs
what is it usally on a stocker ? that is the promblem with this motor the gut i bought it from bought it off a R&D guy from briggs and he doesnt know whats in it .I knoe it has roller rockers I can see that thru the oil fill . so im asumming it has a little work it actually has a sticker on iut saying this motor is for research and testing and is not to be sold to consumer so i think these guys probably build a hot little motor and then back door it or buy it for cost , going to pull it apart this spring to see whats it got for internals
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Mon Dec 21, 2009 10:26 am |
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stanco
MMT Pro Member
Joined: Fri Feb 13, 2009 12:06 am Posts: 260
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 Re: compression on a 35 briggs
135 - 145 if I remember correctly on a stock.
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Tue Dec 22, 2009 11:11 am |
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bjg
MMT F.E.
Joined: Thu Jan 15, 2009 7:34 pm Posts: 882 Location: Ahead of you, with a rubber band turning my prop!!
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 Re: compression on a 35 briggs
Thats some very good numbers.
_________________ BUCK OFAMA
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Tue Dec 22, 2009 7:28 pm |
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