Freeing up the Time Stuck 1959 Pontiac 389 Bonneville Engine

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Ring Finger
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Awesome write up Brian soon you will have her all freed up I can't wait!!!!

:ridiculous: :toilet: :ridiculous: Be good or be good at it!!!
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maniacmechanic
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maniacmechanic
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I have the 1959 Pontiac 389 4-BBL Bonneville Engine Unstuck .
Household Ammonia I used to remove the Aluminum Oxide in the Crevice Areas of the Aluminum Pistons.
It Works great.

Any other methods would have required tear down & Pounding all 8 Pistons out with a 20-lb Sledgehammer. Something would broke for sure then.
It was that tight stuck.
I worked on getting this engine free to turn by hand with a Snap On Ratchet breaker bar for 1-1/2 weeks now.
Before work & after work.
About 35-40 hours effort.
A Holy Mother Fuck Ordeal.

I mixed up Marvel Mystery oil , Castrol Edge synthetic 10w30 oil, & Castrol Dextron III ATF into my oil squirt can & shot a bunch down each cylinder.
Put the spark plugs back in & let it sit for another day or 2.

Break Away Torque is around 100 ft/lbs & about 50- 75 ft/lbs to keep it turning.
Will get better soon.
Marvel Mystery oil can now do its job & lubricate.
The Aluminum Oxide prevented it making past.
Gone now the Oxide & Rust.
Chemical cleaned by Me here.

Going to rebuild the starter motor next.
Its tired.
Rebuild it myself over the next few weeknights this week.

After that I will clean all the sludge out of the engine.
I have a A Nice & very Kool Snap On Solvent Blaster Gun to use with my Air compressor.
Blast the grime away at 125 psi.
Used in the Diesel Truck Repair field to clean large parts.

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maniacmechanic
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In my search for answers on The US Military Truck Restoration Forums I found out what is in Marvel Mystery Oil.
Its a Complex Blend of Phenols, highly refined base oil( Singer Sewing Machine Oil), & Wintergreen Oil.
Wintergreen is used on US Navy Battleships to Loosen the Gun Turret Barrels.
Good Stuff.
Found US Patents too.

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Ring Finger
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Yes so glad you got it freed up!!! And a great write up to boot!

:ridiculous: :toilet: :ridiculous: Be good or be good at it!!!
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maniacmechanic
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I rebuilt the 1959 Pontiac 389 Starter Motor last night.
I used a Field coil barrel from a Pontiac 455 10 MT Starter.
1959 & 1960 389 Starter motors are early 10 MT With a 2 year only specific armature.
Put it together with a New Starter Solenoid I had.
Installed 00 Battery cables I had put away.
It cranks the 389 much better and faster.
I cranked the 389 at least 2,000 revolutions last night.
It is much better and easier to turn by hand.
Lots of carbon blew out with spark plugs removed.
Still slight tight.
Thinking the Oil rings are not Free unstuck yet.
Put my finger over each spark ug hole and hit the Remote starter bump switch.
Lots of Cranking compression present.
My finger blew off violently on all 8 cylinders .
Reading into Wintergreen oils.
May try adding pure Wintergreen down each cylinder.
Its what's in Marvel Mystery oil and Kroil oil.

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maniacmechanic
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All 16 Valves open and close as they should.
No flat camshaft lobes.
A survivor engine.
Definitely sat since early 1980's.

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VFPreacher
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Sometimes, brother -you blow me away with your ingenuity.

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Ring Finger
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Awesome Brian so glad to hear taking notes in my head if I run into similar. Give it hell this year we run them.

:ridiculous: :toilet: :ridiculous: Be good or be good at it!!!
yedister
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Why don't you just take it apart, clean the crap out of it and rebuild it ?
Would that be less time consuming


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