56 7.5 johnson

dtruck

Cadet
Joined
Oct 31, 2009
Messages
19
Ok, here's the deal I have done everything in the topsecret file twice on decarbing motor.The best compression I can get out of her is 62lbs on both cyls.Seems to run like a top though, no problems at wot,idles pretty smooth all the way down to nothing,has very good response on a hole shot.Any wisdom on compression?
 

lindy46

Captain
Joined
Nov 27, 2008
Messages
3,886
Re: 56 7.5 johnson

That compression should be fine. If it runs good, that's all that matters.
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: 56 7.5 johnson

That's fine for a rope start engine.
 

dtruck

Cadet
Joined
Oct 31, 2009
Messages
19
Re: 56 7.5 johnson

Great, guess i'll hang her on the wall till the lake thaws
 

1946Zephyr

Vice Admiral
Joined
Oct 21, 2008
Messages
5,556
Re: 56 7.5 johnson

If you get matching compression numbers, between the two cylinders, that is most important. 62 psi is pretty good. Your fuel mix should be at 24:1 ratio. Great little motor. I hope you enjoy it:D
 
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