Seized motor

[Shaun @ Tru6]

I'm picking up a seized early motor and driving it halfway across the country. Is there any benefit to adding a cup of PB Blaster or diesel or ? to each cylinder down through the stacks, with the hope of 1800 miles of vibration to free it up?

[porsche930dude]

Its worth a try if nothing else thats less time youll have to soak it later. Iv also heard marvel mystery oil can be good for that

[scottb]

No personal experience, but I've heard that Marvel Mystery Oil or automatic transmission fluid poured into the spark plug holes can help loosen-up a seized motor. I'm sure neither will do any harm, and the fact that you'll be bouncing along for 1,800 miles couldn't hurt either!

Good luck, and let us know how it goes.

[myfast911]

i have used the zep product. sprayed on seat rails that stayed wet for 9 months. flood car. that stuff works so well it will loosen a tight mans wallet.

[EarlyPorsche]

I would fill the whole engine with ATF - its a detergent and should help free it up as long as its not seized from excess water getting into it.

[djpateman]

Putting oil down the intake will do little good since most of the intake valves are closed. Pull the spark plugs, fill with lube of choice, insert spark plugs for the trip.
NOTE: remove the spark plugs BEFORE trying to rotate the crank. Filling the cylinders with a incompressible fluid means you are hydrolocking the engine. If the engine does rotate later, you will have a mess of oil coming out of the plug holes, so be prepared.
What is this engine worth driving 1800 miles for??

[cgarr]

I don't think I would drive a "seized early motor halfway across the country"

[Noel]

Shaun,

Where are you picking it up?

RE the seizing, I'm not sure I would pour anything down until you determine the cause of the seizing. I assume you are tearing it apart once you get her back to MA.

[Rich76_911s]

When I was looking into doing this someone suggested gibbs penetrating oil:
http://getgibbs.com/

Good luck on the trip Shaun and keep us updated.

Rich

[ed martin]

Why is it seized? Bearings, broken crank, rust in the cylinders? I would disassemble and isolate the problem and go from there. If it's rust in the cylinders I would hone them and rering the pistons, and while your in there...

[Shaun @ Tru6]

Thanks everyone. the motor will be rebuilt from top to bottom at some point. it will never be run as is. it has been sitting in a car in a field for a long time.

[Shaun @ Tru6]

Originally Posted by Rich76_911s

When I was looking into doing this someone suggested gibbs penetrating oil:
http://getgibbs.com/

Good luck on the trip Shaun and keep us updated.

Rich

thanks Rich, may just do that. will keep you updated.

[Superman]

If it's seized from sitting, then I'd say there's a chance it will loosen up. My favorite penetrating, rust-dissolving solvent is called Maltby's.

[Zeke]

Two motors I have dissembled that were seized would not have been healthy if I turned them after getting them loose. The reason is that there was rust inside. That rust would have been picked up by the oil and run thru the rest of the motor, which may have been OK beforehand.

[berettafan]

Originally Posted by cgarr

I don't think I would drive a "seized early motor halfway across the country"

for the right price i sure would. i'd love a crapped out 2.2 to take my time rebuilding. particularly if i didn't have to drop a bunch of $$ to buy it.