Old C motor siezed

David Ohio · May 30, 2012

Got head off cylinder walls corroded what would be good to put in them to soak maybe to free up Thanks

brandon j · May 30, 2012

i use paint thinner and light it on fire for about one hour and it will be free just put it out before you turn it over never had it not work

gene bender · May 30, 2012

he says the walls are corroded so the pistons are rusted fast and no fire will smooth the walls enough ot free up the pistons. Ive had too muich experience with stuck engines that were stuck fast with rusty walls.

mkirsch · May 30, 2012

Depends on what you mean by "corroded."

Light surface rust can be defeated by any of 1000 different engine unsticking concoctions.

If you're talking about heavily rusted cylinders, the only solution is to replace them.

CNKS · May 30, 2012

Those are wet sleeves, unless you have extreme rust between the sleeve and the bore, the only thing holding them in is an oring at the bottom of the sleeve. You should be able to drive the sleeve piston and rod out as a unit.

Janicholson · May 30, 2012

The Cylinders are completely removable. Held in by friction of a big Oring at their base. Remove the crank. and they will come out the top. A oak 2X2 and a 2 pound hammer help. If way rusty, remove them. Jim

JRSutton · May 30, 2012

Two schools of thought there - the cheap way and the right way.

You can soak the cylinders with ATF for a day or two - pound the pistons with a block of wood and a mallet to get them moving.

With the pistons in place, grind out all the corrosion with a cylinder hone.

Put it all back together and it'll probably run fine for years, depending on how you use it.

The thing is - if you're thinking of replacing everything anyways - running the old stuff into the ground isn't a bad thing. Might as well get a few more years out of it until there's nothing left.

But - on the other hand - if you're going to replace it in the future anyways, you're only pushing the cost down the road, not avoiding it. So - since you've got it apart now, might as well just do it right and you've got an engine that you probably won't ever have to worry about again.

old · May 30, 2012

A lot depends on what your planning on doing with it.
Me I free them up with ATF and have had good luck doing so. One like what you have you can go a step further and only if you can do this safely you can after letting soak say a week then add a table spoon of gas to each and light it up. That heats up the sleeve but not the piston and some times that helps free it up. I commonly use 3 or 4 if not more tractors that had locked up engine and they run just fine and most I never even took the head off of

Old C motor siezed

David Ohio

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brandon j

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gene bender

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mkirsch

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CNKS

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Janicholson

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JRSutton

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old

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