Super H stuck

mb58 · Oct 15, 2013

Got the head off my super H. Three cylinders/sleeves look good. Fourth one looks bad. Inside of sleeve is rough and top of piston has minor section loss. Still I intend to clean it up as best I can and free it up. Any of you ever torn down and put back together an engine you were skeptical about?

Baelee05 · Oct 15, 2013

Sounds like you need a sleeve and piston at a minimum. I know there are people here who will disagree with me, but I have never been a fan of replacing just one hole. If one is bad replace them all. Then you know what you have.

mkirsch · Oct 15, 2013

If it was a matter of "nothing to lose" I would say go for it.

Unfortunately, you stand a chance, a small chance, of causing some very expensive damage. I'm getting visions of the piston hanging up in the sleeve and causing the rod to ventilate the block.

That's like worst-case scenario, though.

Clean it up and see if it fits okay. Personally if it felt just like the other three I would take a chance and button it back up. After all, what do you have to lose? (Don't answer that.)

El Toro · Oct 15, 2013

I would do it right, pull the engine and crankshaft have the shaft measured for wear. Buy your bearings from them. They won't grind it unless it needs it. Put in a new sleeve kit and it will run a long time. Hal

Zachary Hoyt · Oct 15, 2013

When I got my 300 it was the same, #3 or maybe it was #2 was stuck and rusty and the other three looked great. I put one new sleeve in it and was going to reuse the piston but I broke one of the ring lands trying to get the old rusted ring out. I bought a new piston and put it in and it has run well and been trouble free since. I would go ahead and try it with one new piston and sleeve if I were in your position, but I have long been known to be a cheeseparing cheapskate.
Zach

mb58 · Oct 16, 2013

Thanks for the replies from everybody. Unfortunately, I too am downright tight. I love these old tractors, but realize that with my income I cant save them all, and I certainly can't fix them all. I will probably go ahead and take my chances with the piston and sleeve as is. The sad part is that all this could have been avoided if the previous owner had simply covered the exhaust.

PretendFarmer · Oct 16, 2013

(quoted from post at 15:51:34 10/16/13) Thanks for the replies from everybody. Unfortunately, I too am downright tight. I love these old tractors, but realize that with my income I cant save them all, and I certainly can't fix them all. I will probably go ahead and take my chances with the piston and sleeve as is. The sad part is that all this could have been avoided if the previous owner had simply covered the exhaust.

As Zach said, replace the one bad piston and sleeve. Or you could just replace one piston with new rings and hone the sleeve. I replaced one piston with rings and a sleeve on my 140 and it has worked flawlessly. I wouldnt worry about the lower end bearings. When you disassemble, just make sure you put things back together correctly and torqued properly.
IF the bearings are bad, it will knock. You will know immediately if thats the case and you can replace them anytime. As some always say, if it aint broke don't fix it.

Super H stuck

mb58

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Baelee05

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mkirsch

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El Toro

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Zachary Hoyt

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mb58

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PretendFarmer

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