50/50 mix acetone-transmission fluid

More than likely,acetone is nasty stuff. Just try putting on atf,it's not like you have a tight threaded bolt. A rusty pin will have some gaps for the atf to flow I would think.

Ok. Thank you.

Also, liquid wrench is great for something you can get at the hardware store. I believe it tested far and above PB. Kroil is what we used at work and it seems to be great. Doesn't run as easily as some of the other oils and stays where you want it to.

Sledge isn't budging it .

Production engine rebuilders will take a torch and heat up rusted block plugs and then hit them with wax. The wax wicks in just like solder in a copper plumbing joint. After the wax goes in the rusted plugs come right out.

Jeff,
You may need to make a puller for it. You would need to drill and tap the pin so a steel plate can be attached. In the plate you would need jack screws around the perimeter on the pin. Then by tightening the jack screws, the pin should come out. Even better yet, I'd look to borrow a Porta-Power with a hollow cylinder.

I used the 50/50 acetone and atf mix to break pistons loose in a 1966 327 Corvette engine that had been parked for 35 years. I had first tried everything else including PB Blaster and Kroil.

What finally got some movement and then broke it loose was heating the pistons with a torch and then squirting the 50/50 mix all over the hot piston head so it could soak down around the piston rings.   I was in a safe area so I tested how flammable this mix was hitting the liquid on the piston head directly with the torch. It burned but slowly with no flash. I was surprised. It is a pretty safe mix.
As someone already mentioned you can actually see and feel the rust breaking up after this is applied.   I got that engine to roll over smoothly.
I should have mentioned that one cylinder had mice living in it when I pulled the head off.
I am sure the nest was not good for the cylinder.

We need to invent a name for this stuff. It is hard to type 50/50 all the time.

Great idea Mark, naming this mixture.
I have used the name Liquid Magic but I also use that name for Klotz synthetic racing 2-stroke oil.
I think Knocker Loose has already been used.
All I can think of right now are names much longer than the actual ingredients, like: The fluid that's less fun than spending a day with alcohol tobacco and firearms.
I'm sure this group can come up with something much better.

Not bad Dave.    I got one, but sadly it's no good.
Ace-Tranny, but I think it would remind some people of the horrible idea that Bruce Jenner had.

M-oil!

And here I was just trying to get my little ole lonely pin loose and now we are talking about trans people . LOL . Will work on it over the holiday weekend .

If it will not move I wonder if it got bent.   If it wont move cut it flush with your trailer and drill it out. Should only have to drill in about 1/4" each side then buy a new pin.

My son works for a company that makes stuff like this. I have been telling him about the Acetone/ATF, and how wildly popular it is here. He said to try some of this stuff if all else fails. He would like some real world feedback on how it works vs. other stuff. He would be happy send a sample or two out to anybody that wants to try some. They do private label sprays and fluids for the automotive world. He isn't looking for sales. Just trying to help some fellow boaters, and get some feedback. He's been to a reunion or two with me. I got the link to work once, but, having trouble here. Hope it works or maybe somebody can fix it.

https://www.youtube.com/watch?v=5070kl1pnyU&feature=youtu.beto

David, I would give it a try, let me know how to contact him. I can use it and also give a can to the guy that runs our plant, tons of applications there for it. Let me know how to get in touch with your son.

I usually use Liquid Wrench, so would be comparing that that, also use Cyclo Break-Away at times.

KENO wrote: He thought about it but there are so many questions What kind of nail, new, old, rusty, galvanized, coated ? More importantly what kind of ATF do I use synthetic or dino oil? Way to many variables

Really disappointed in all your excuses. Buy a pound of nails and you can test every combination and variable. Take your time, but we'd like to hear back with results before Thanksgiving.