Mrmerlin

I was chatting with a nother 928 owner today and he mentioned that someone (possibly Bill Ball) had done some experimenting with different chemicals and found that Acetone and another chemical mixed together reduced friction on a fastener, does anyone know about this.?
I am still working on the 3 broken bolts for the water pump, i tried to heat them till they were red but they dont stay that way for long and they are still not moving, the shortest bolt i drilled a small drill through the bolt to its backside so to fill it with some PB but, it isnt moving

cfc928gt

Stan, I found the thread where Bill Ball sayes:

FYI - A test of penetrating oils from the April/May 2007 edition of Machinist's Workshop magazine. They measured the force required to loosen a rusty test device.

Pentrating oil / Average load / Price perfluid ounce
None / 516 pounds /
WD-40 / 238 pounds / $0.25
PB Blaster / 214 pounds / $0.35
Liquid Wrench / 127 pounds / $0.21
Kano Kroil / 106 pounds / $0.75
ATF-Acetone mix / 53 pounds / $0.10

The ATF-Acetone mix was mixed 1 to 1 ratio.

Fabio421

Heating the bolt will also heat the surrounding base metal. Once it's heated, quench the bolt with a piece of ice to shrink it while the base metal is still hot and expanded. The bolt will usually come right out. Rapping on the head of the bolt with a hammer will also break the friction as well.

Rob Edwards

I am going to bring some acetone home today and mix it up 1:1 with some ATF in a PreVal sprayer. I will do some non-scientific evaluation and see how it works. Will report back.

dr bob

Make sure the sprayer is acetone-capable all the way through. Make very sure that the sprayer seals well enough to contain the acetone at ambient temps in your garage, too. Fumes will make their way out through the nozzle and around the pump piston, and go directly to the burner on your gas water heater.


Not sure if there's a breakaway torque table for medical-grade acetone mixed with synthetic ATF... It's gotta be better!

Rob Edwards

I'll only put in 50 cc or so of each, so it'll be a small fire..... I would imagine that the PreVals would be resistant to organic solvents if you can shoot thinned paints through them. Besides, it only gets to 115 in the garage during Santa Anas, what's the vapor pressure of hot acetone?

It's only histology grade acetone, not ACS reagent or HLPC grade. I'll be sure to get some Dexron VI, as Mongo tells me it's better than Target brand Mercon III.....

dr bob

C4

Mitch Johnson

Rob,

If you have access to toluene I would give that a try as well, the higher boiling point, higher flash point and lower vapor pressure might be beneficial.

Rob Edwards

Mitch-
I have acetone, xylene, toluene, and benzene, i could try each. And I thought of the perfect tough nut to crack- the front tow eye plug.....

Mitch Johnson

You ought to be able to make a decent cocktail with that selection.

Let us know what you find out.

Mitch Johnson

On second thought, I would skip the benzene it is pretty hard to come by.

dr bob

Toluene has been on the EPA carcinogen ****list for a long while. Benzene should be if it isn't already. Acetone should be except too many people use it for too many things. Most of the good things in life are illegal.

Bill Ball

Benzene has been on every list of known human carcinogens for a long, long time. A direct connection to a variety of leukemias has been established. It has the highest EPA cancer risk rating (Group A). Toluene is not on the ****list. It's considered Group D (not classified as a carcinogen). It's actually not very nasty, mostly causing central nervous system depression (glue sniffers). Acetone is also group D. Health effects have been studied and show some neurological damage from chronic exposure, but no connection to much else.

BTW, I have can of acetone and some ATF, but I haven't tried the mixture yet.

Mrmerlin

Thanks for all of the responses.
Dr Bob I cant seem to find any C4, so I will try using the Mapp gas again, I did soak the bolts again last night so they are still tight and stuck (used the Acetone/ATF mix)
Fabio I will try the ice on the bolock trick,my only problem is that it takes a lot of heat to get the block even just warm as it sucks the heat fast, Oxy/Acet torches might help

dr bob

Bill--

Without looking to verify-- my bad --, my feeble memory is that we were gifted MTBE as fuel additive in Cali because of possible exposure to toluene for drivers and gas pump jockeys. If it's really classed the same as acetone, it can go back in gas to replace, ah, let's see, the additive du jour, which is now ethanol! Cure world hunger at the same time we res!ore 15% of our fuel economy lost to the flavored water ethanol! A win-win for everyone except ADM!