H Blown Engine

Jarhead · Nov 30, 2008

Was twitching a log out yesterday and all of a sudden the engine started knocking and rattling....shut tractor down and could hear the radiator empty into the block. Towed it up to yard and set engine up timming marks etc and removed the head. Found #1 piston broken at the wrist pin and the liner in pieces on the upper top. Could use some help please on what I need to do to get the ol girl back up and running. It"s a 44 model h with dome top pistons. Do not know if it has been overhauled before or not but she had oodles of power when I needed it. Thank you

El Toro · Nov 30, 2008

You need to pull the engine and tear it completely down. You need to inspect that block closely for any cracks in that sleeve area. You need to have your head magna-fluxed for cracks. The crankshaft needs to measured for wear by your local auto machine shop. They can furnish the correct bearings too. It may need to be ground undersize. I would install a new sleeve kit too. I would find some good used rods and have your auto machine shop to install the new pistons
on the used rods. This should get you started. Take a lot of pics and make notes as they will come in handy during the rebuild. Probably time to have the clutch rebuilt. Hal

mattofvinings · Nov 30, 2008

Agree that it's time for a complete rebuild. Good news is that you shut it down before a rod poked thru the side of the block.

Before going deeper I think I'd remove the oil pan and then #1 rod, then see about hand cranking it over. I think you'll know if anything else has been damaged. Without any compression it should be just the drag of the other rings in their bores - there should be enough oil in the journals not to damage anything.

Also very important to thoroughly clean the lower end of the engine to get any pieces/parts out of there.

Anonymous-0 · Nov 30, 2008

Yeah, I'm afraid I have to agree with Hal on this one. I think you had better tear it down and check everything out. I have seen people replace one jug and liner and get away with it, but it is risky. People have been known to do this and call it an overhaul!! At the very least get the pan off and see what you have. Pull the other rod caps and see what the bearings and crank look like. Pull the mains one at a time and check those as well. If any of the bearings or the crank look suspect you must do a major. The worst part is that by the time you get done with parts and machine work on a properly built engine you will have the price of a nice running H in it!! You'll know what you have too.

Jarhead · Nov 30, 2008

Thanks for all the info...dropped pan and found rest of piston and liner. What is the procedure to remove the engine as it will be done right...never had much luck doing it half a##. Is this site a good place for engine parts...haven"t had much luck with them on magneto coils. Again thanks everyone.

44 massey · Nov 30, 2008

If you have antifreeze in the oil pan then you definately have a crack somewhere that you will need to deal with, more then likely in the block!!

JT · Nov 30, 2008

Depending where you and how fast you want it running. I have an engine, came out of a running tractor. I bought it to put in another H I have but, am now using the other H as a parts tractor, so don't need it. I am in central IL. email is open, if you have any interest.
Jim

Jonathan Mirgon · Nov 30, 2008

In my opinion it would be best to do a complete overhaul, first verify that there is no block damage. As someone else said replacing only the broken liner and piston etc is not the correct way to fix it right. Get the crank re-ground and replace main and rod bearings, pistons , rings and liners. If done right your tractor will easily than outlast the operator. I have a 52 super c that I am restoring. When I purchased it smoked upon startup and had a big lack of power. Although it ran I decided to do a complete overhaul and make it run like it should. When I tore it apart I found all original IH parts inside of it. So if rebuilt corectly they will run a long time.
Good luck with your project !

Janicholson · Nov 30, 2008

A loose sleeve can, and will, crack at the top right at the rim. then it has the top ring expand into the gap and smash the ring into the head, and the thin remainder of the sleeve into the pan. Not good. If the water stayed where it is supposed to be, the cost is likely to be less. Valve train damage, including possible broken cam, bent valves, cracked head, cracked block casting at the bore, bent rod, and contamination in oil passages. As indicated, it needs to be taken out and done right. If you need the tractor, the offer of an engine might be easy and allow you to go through this one this winter while doing your post clearing cleanup. Good luck, JimN PS I like the root rake, how does it pull, and how often is it necessary to demount and pry out roots?

mkirsch · Dec 1, 2008

Jarhead, the procedure for overhauling the engine is a little too long and involved to post here. You're doing yourself a disservice if you don't go out and at least pick up an I&T manual. You can also get a reprint of the service manual, and there is at least one video available that shows the process of tearing down the tractor for an engine overhaul.

Jarhead · Dec 4, 2008

JimN once every hour is enough. Built it myself out of a old 56 buick frame.

H Blown Engine

Jarhead

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El Toro

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mattofvinings

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Anonymous-0

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Jarhead

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44 massey

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JT

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Jonathan Mirgon

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Janicholson

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mkirsch

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Jarhead

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