is my 1990 200 gt good or not

dannyman3

Petty Officer 2nd Class
Joined
Apr 13, 2009
Messages
147
i have a 200 gt 1990 it runs ok it has a little miss on takeoff but runs 20 ft heavy boat 64mph turns 6100 rpms ive done a compression check it 70 on all 6 cyl's ive had some tell me its done needs rebuilt then have some tell me its fine becase they all are the same i looked up this and there is a lot of these 200gt with low compression does anyone know what the deal is with these having low compression should i run it till it wont run any more any help will go long way thanks hope to here something bout the compression
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: is my 1990 200 gt good or not

compression gauges are all different, they read different. the main thing is that the reading are consistent. with in 10% of each other. your are fine, those bigger engine have lower compression than the smaller ones. you might do a decarb, and bring it up some, probably never done in 19 years. see TOP SECRET FILE.

your little miss, could be a clogged mid speed jet, or a link n sinc adjustment

keep oil in it and tuned, run it till it shows you it wants to stop.
 
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