Need some help gx200 mud motor build.

limewizard

New member
First I will tell you what i have
Honda gx200
Governor removed
Intake with k n filter
Header with muffler
Gx140 emulsion tube and Honda 90 jet
1.3 rockers and 18 pound valve springs
Autolite ar3910x spark plug
Tach/hour meter
Every thing else is stock

My question is what is the max rpm should I let this motor get up to? I got it up to 5160 rpm is what my Tach logged as highest rpm and I still had more throttle to give but did not want to push it without knowing. Also it is on a mud motor frame.
 
1zq35s8.jpg
 
With a stock cam, it won't make much more hp at higher rpm. Wouldn't push it past 6200. Now if you change the cam...
 
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