jbjennings
Captain
- Joined
- Jul 18, 2007
- Messages
- 3,903
Re: '54 evinrude 25hp troubles
I think I've read something about this a few months ago and of course it is a bad thing to do but here goes:
Those 25hp gears/ears are big enough that I took a dremel tool bit and chucked it in my drill press and held the gear under it and tried to "machine" the gear ears back to 90 degrees. The clutch dogs weren't very bad. Weird.
Anyway, I was wondering if it might work for a decent amount of hours? Is the gear just surface hardened and when you sand it down or cut it down you lose the temper? Is the gear "case hardened"? If so, could you heat it up with a mapp gas torch until it's just about to glow red and quench it with some mineral oil or water and get it rehardened? Or is that not hard enough? I'm sure it probably has to be done just right so the gear doesn't shatter so I'm not going to add any heat unless someone's tried it before and had good results.
Either way, I'm going to put it back together like this until I get some new gears and see how it works. I do like the 25 a lot now that it's running pretty good. It will start on one pull when warm but is not super easy to start. Not super hard to start, luckily. It does run pretty nice for a 25hp. I'm dying to get it in good shape. I've got my new seals in but I'm not gonna use 'em until I get some good gears for it.
Later,
JBJ
I think I've read something about this a few months ago and of course it is a bad thing to do but here goes:
Those 25hp gears/ears are big enough that I took a dremel tool bit and chucked it in my drill press and held the gear under it and tried to "machine" the gear ears back to 90 degrees. The clutch dogs weren't very bad. Weird.
Anyway, I was wondering if it might work for a decent amount of hours? Is the gear just surface hardened and when you sand it down or cut it down you lose the temper? Is the gear "case hardened"? If so, could you heat it up with a mapp gas torch until it's just about to glow red and quench it with some mineral oil or water and get it rehardened? Or is that not hard enough? I'm sure it probably has to be done just right so the gear doesn't shatter so I'm not going to add any heat unless someone's tried it before and had good results.
Either way, I'm going to put it back together like this until I get some new gears and see how it works. I do like the 25 a lot now that it's running pretty good. It will start on one pull when warm but is not super easy to start. Not super hard to start, luckily. It does run pretty nice for a 25hp. I'm dying to get it in good shape. I've got my new seals in but I'm not gonna use 'em until I get some good gears for it.
Later,
JBJ
I'm getting the urge for a green '55 25 like cc67 has. 
