Unsticking a motor

[InjectorTim]

I've got a stuck straight 8, and I would like to get some input on what you guys do to get motors unstuck. On wednesday I pulled the plugs and put some Marvel Mystery Oil in each cylider, I havent tried to break it loose yet, but if it won't come unstuck, what course of action do you guys suggest I take?

Thanks,
Tim

[RileyRacing]

Diesel or Coca Cola. MM should work though. Do a search "in the last year" this has come up a couple times, and there are some Genius solutions, including tapping a plug with a grease zerk! http://www.jalopyjournal.com/ubbthreads/images/graemlins/blush.gif http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

Jay

[Gr8ballsofir]

Coca Cola!! just pour some in each cylinder and weight about a half hour and then try again!!

[InjectorTim]

I was gonna give the MMO a week,seeing as the only thing I have alot of is time,but if it doesn't unstick the motor I will try coke.

[AV8Paul]

I unstuck a Model A engine with diesel and MM. Then every couple of days I'd go out and hit the starter. After about a week she broke loose and I had four gysers blowing diesel and MM on the ceiling of the garage.

[rusty210]

I've used Marvel Mystery Oil once to free a motor. I filled the cylinders and let it sit for 2 weeks. It turned freely, and didn't even smoke when I got it running.

[Baron Von Mike]

Since the motor is stuck, I assume it's gonna need a full rebuild, hence my suggestion.

If you're gonna do a rebuild, you're gonna need to remove the crank, and you're probably gonna put it on an engine stand. Once you've removed the crank you can attack the pistons from below and above one at a time. Plus you can now spin them and move them up and down to loosen them.

But if you're just looking to unstick the motor, this won't hellp. http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

Mike

[InjectorTim]

Thanks Mike, but were I work we dodnt even have an engine stand, we just roll the blocks around on the floor, but my boss has been building hot rods for the last 40 years so he must be doing something right http://www.jalopyjournal.com/ubbthreads/images/graemlins/tongue.gif Hopefully the motor is just gummed up from sitting.

[BigDdy31]

[ QUOTE ]
Thanks Mike, but were I work we dodnt even have an engine stand, we just roll the blocks around on the floor,

[/ QUOTE ]

LOL Dude, buy your own engine stand. Harbor Freight for less that $40 bucks. You won't regret it and it saves the back from all that block rolling. http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

[InjectorTim]

Ahh, but what i lack in money I make up for with my youthful back! http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

[Unkl Ian]

What are you going to do with this thing if you get it unstuck ?

[InjectorTim]

drive the wheels of it, What else? http://www.jalopyjournal.com/ubbthreads/images/graemlins/cool.gif

[InjectorTim]

that is of course after I get the car running.

[RenoRat]

All i can say bro is read em all give em all a try and if none of those solutions work scrap it steel is gettin expensive!!!

[OldCarPilot]

[ QUOTE ]
Since the motor is stuck, I assume it's gonna need a full rebuild, hence my suggestion.

If you're gonna do a rebuild, you're gonna need to remove the crank, and you're probably gonna put it on an engine stand. Once you've removed the crank you can attack the pistons from below and above one at a time. Plus you can now spin them and move them up and down to loosen them.

But if you're just looking to unstick the motor, this won't hellp. http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

Mike

[/ QUOTE ]

Stuck motor doesn't mean rebuild. Could, but not always. I've never tried the coke thing, but they say it works great! I've used PB blaster. Spray it in the cyls and let it sit. Be careful about turning it over. If you try too hard too soon you may break a ring. Using the starter isn't a very good idea because of that.
Good luck!

[Benzine440]

I depends how long it's been stuck and how it was stored and it's overall condition befor it became frozen. My favorite success story was an Olds 400 from a 67 442 that had been wrecked in 1977 with about 63k on it. It had been garaged from then until the time I bought it in 1991. I pulled it and stored it outside under cover for 2 years (stupid of me). Finally got around to it, pulled the heads, virtually no wear in the bores. Filled the engine with diesel and let it soak about 60 days before attempting to turn it by hand. I gently applyed force and it turned easily. I continued to marinate it for a week or so while gently turning it. Once satisfied that it was free and easy I did a valve job on the heads regasketed it and installed it in another 67 442. Fired and ran strong like an Olds should. A friend has it now and it is going strong with at least 110k on it.

I am sure that I was overcautious but that was the first time I ever did that and wanted to be sure of success.


On the other hand I just last month tried to unlock an International 223 6 for a friend. After a couple weeks of diesel soak it still refused to submit. Had sat since 1980.

Probably will have to come apart. Sometimes they are truly fused and you have to forcibly remove the pistons. Maybe this might be the time for the Coke treatment. I've never tried it.

There are few problems that cannot be solved by the precise application of high explosives.

[Benzine440]

I see that I've now become an FNG. What is that, please?

Fucking No Goodnik?

Fidgety Nitrous Guzzler?

Formidible Nash God?

[atch]

unsticking a frozen engine (http://www.jalopyjournal.com/ubbthreads/showflat.php?Cat=&Board=UBB1&Number=283229&Forum=A ll_Forums&Words=unstick&Match=Entire%20Phrase&Sear chpage=0&Limit=25&Old=allposts&Main=280585&Search= true#Post283229)

here's one post, but do a search for more. this has been discussed several times with lots of good ideas suggested.

[Beezerbum]

[ QUOTE ]
Diesel or Coca Cola. MM should work though. Do a search "in the last year" this has come up a couple times, and there are some Genius solutions, including tapping a plug with a grease zerk! http://www.jalopyjournal.com/ubbthreads/images/graemlins/blush.gif http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

Jay [/quote
I'm driving a '68 Mini that was stuck. Find the piston that is near the top, fill the cyl full of ATF, take an old spark plug (break out the ceramic) and a grease zerk, loosen the valves in that cyl, install the zerk into the spark plug base,then put it into the plug hole and pump away! once it moves a bit, you should be able to turn it by hand - then stand back and hit the starter IT"S MESSY! http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif I've done many engines this way. http://www.jalopyjournal.com/ubbthreads/images/graemlins/shocked.gif

[Oilcan Harry]

Uh BigDdy31 I don't think I'd put a straight 8 on a $40 Harbor Freight engine stand. A straight 8 is so long it might not balance too well on any regular engine stand.

[Rocky]

I had a 51 ford flathead that had been off the road since '59. It had 27,000 miles on it but it had been siezed for many years. I pulled the heads and soaked that MO Fo for 4 months! I soaked it in PB blaster, tranny fluid, Lacquer thinner mixed with CRC-556 and I'd pop all the pistons with a hammer on my way past it every day. All but 2 pistons freed up the first day and I concentrated on those 2 stuck pistons for all the 4 months...I turned the engine upside down on it's engine stand and tapped from the bottom while soaking the mixture around the pistons from the bottom...turned it back over after 3 weeks and hammered on those stuck pistons while soaking......In desparation, I lit the lacquer thinner-filled cylinders and let it burn until the cylinders were dry and filled 'em again with PB blaster. I finally got so PO'd, I turned the engine upside down again, pulled the crank and 6 pistons and used my truck punch and a 3 lb sledge to break the piston tops off from underneath. Turned over then!
Mike Bishop has the engine now and marvels at the condition of the 27,000 mile block.
The next flalthead I bought was stuck too... I didn't waste time messing with it. Broke the stuck pistons out again after 4 hours soaking. Hell, we bore 'em oversize and need new oversized pistons anyway..
Mike got that one too.

[metalshapes]

Has anybody mentioned the old Water Trick yet?

I read it a while ago here on the HAMB.
I have tried it on a set of rusted solid Brake drums ( Shoes rusted to the steel liner of a set of Aluminum drum brakes )
And a Nailhead that I had to turn enough to get the Dynaflow off.
It probably wont work after you used oil, but soaking the rust in water makes it soft and kind of muddy.
It worked a lot better than I would have thought...