1995 OMC 25 mods 31.8

[champ20B]

When you say one size do you mean going from 59 to 58 or from 59 down to next available size?

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What I did once was use a large diameter carb like the one pictured above. My carb was off a bigger motor because the jet was too lean. Motor was cutting out at top end. I simply matched the jet with an equal size drill bit then tried one size larger bit at a time. I bored out the jet till it ran right. I had it on a small utility race runabout. I simply added on a 17" pitched prop I had done, and advanced the timing stop up a tad. I was able to achieve 51mph. That's all I can tell you. I think I used 1/16" or a smaller bit, but I really cant remember.

[captbone]

What is the most HP that can be had safely from these engines? I noticed Second Effort used to offer a CLE gearcase for them. Anyone ever see one?

[Chairman]

No experience with these, but downloaded this pic from BRF a couple years ago.

[captbone]

That is where I saw it. I was always hoping that someone would have a couple new in the box stashed in the corner of their barn.

I would like to raise my engine a little higher and worry about water pressure.