Seized Oliver standard 66 motor

[Gettin there]

Hi all, need to know some tips at freeing a seized, locked up engine. I think this motor may have blen a head gasjet in an attempt to start.
Its been 20 years plus since it ran. Just removed pan found snall amount of oilish fluid but thinner appears to be coolant .
My question is can one somehow prime or get oul forced to bearings aa well as putting some sort of agen into cylinders to assist in lubricating so attempts to free it may be facilitated.
Im sure I'll have to remove head eventually
Just want to hopefully break motor free.
Thanks

 

[Steve@Advance]

Chances are the problem is in the cylinders, not the bottom end.

First, pull the plugs, try to get a look in the cylinders. Look for liquid coolant/water pooled in any cylinder. If there is, it will have to be vacuumed out with a piece of tubing duct taped to the shop vac, blown dry enough for oil to get down around the rings.

Then get some light oil, ATF, penetrating oil in each cylinder, let it sit a few days.

Try to break it loose, bumping the starter will sometimes do it, or prying on the flywheel gear.

But don't get too rough with it, and don't be too hopeful. Chances are if it does break loose the rings will be stuck, it will have low compression, blow oil, burn out a cylinder...

And with no history, blown head gaskets are usually associated with overheating. How many times, and how hot did it get?

If the bottom end is bad, then it will for sure have to come apart. That type damage doesn't just go away.

 

[Randy-IA]

I have a Farmall M in the same shape. Ten years in a tree line or something. I just bought it for parts but I'm trying to get the engine freed up just for fun. I blew algae and flake rust out of the cylinders so I'm fairly certain it will never turn over. Nevertheless, I filled each cylinder with about a cup of Sea Foam Deep Creep and it's been soaking for a couple weeks now.

I'm not taking parts off until I'm certain I won't get it to turn over. Regardless, it has a cracked mainframe so it's basically junk anyway. Looks like a bull gear and some piece of metal (gear tooth or ball bearing maybe) got into a tight situation and the casting didn't survive.

Good luck with yours. I'll let you know how the Sea Foam works.

 

[rrlund]

If it's been stuck for 20 years, you might as well start disassembling it right now. If by some major miracle it does come loose the rings will most likely be stuck in the grooves and it won't have any compression anyway. I wouldn't be surprised if you even have some stuck valves at this point and you risk bending or breaking something in the top end.

 

[Stephen Newell]

If you can't quickly break it loose by squirting some penetrating oil in the cylinders you might as well break it down and overhaul the engine. If it takes days of soaking chances are one or more cylinder walls are damaged.

 

[Gettin there]

No it never got hot. I auspect it blew a head gasket in an attempt to start. Long story.
It was my fathers tractor . It ran and was used. My late father had attempted to start it hyt it wasnt cooperating. Since it has thos pesky side covers, and is an oil bath breather (not very accommodating to get at intake, my father decided to pour a bit of gas down the exhaust. His recounting that it went bang caught sine grass under it on fire and never ran again.
So given that, and some time after I recall removing pan and finding no oil in the pan which is wasnt run dry I know my father in that respect.
That I'm now assuming it caught fire with maybe some excess fuel from flooding in the pan as well as in the top end and blew head gasket, allowing some coolant to enter engine.
I've filled cylinder with diesel fiel and it wasnt ling agter that that it was apparent that some diesel was drippong from lower part of sleeves and cylinder bores.
Guess I'll put more in and wait some more.
Its been almost a week.

 

[Gettin there]

Yes I'm sure it might. I've filled the xylinders with diesel fuel it wasnt long after that a couple were seeping fuel down yhrough cylinders so...?

 

[Gettin there]

Well with oil pan removed I filled cylinders with diesel fuel, wasnt only hours later a couple of cylinders were seeping fluid down below pistions so...??

 

[Gettin there]

I actually removed head today and only a couple of valves were sticking, but got em freed up.

 

[Gettin there]

Got head off today actually cyls 1,2,& 4 were surprisingly in good shape above piston, it eas #3 that was a little rustier looking. Diesel fiel was helping with that. Its just what I see from underneath that's concerning. But we'll see if I can get the pistons pushed through the top of tge block.

 

[Gettin there]

Got head off no apparent damage to head gasket, so gotta be i the cylinders. #"s 1,2 and 4 appear semi shiny almost as if it had run recently but #3 may be the problem. gonna remove rod cap from that one and see if piston can be pushed from below.

 

[Gettin there]

Do the pistons come out the top of block, cause I seem to be able to only push 3 of them to the top then that stop. #3 is the stuck one, I'm pulling the block.