Author Topic: piston freeing cocktails? (Read 3807 times)

turboguzzi · « **on:** February 12, 2012, 02:17:13 PM »

Typical humidity standing for ages in the cylinder thing, no heavy rust, but piston somewhat stuck.

head is off, left it with brake fluid inside for now, but willing to hear about other piston freeing cocktail ideas....

tnxs

TG

Stev-o · « **Reply #1 on:** February 12, 2012, 02:24:01 PM »

Acetone & ATF, 50/50. Not shaken or stirred, just pour!

Worked for me

cookindaddy · « **Reply #2 on:** February 12, 2012, 02:31:43 PM »

I used the grease gun method. Worked great.
http://forums.sohc4.net/index.php?topic=15059.0

turboguzzi · « **Reply #3 on:** February 12, 2012, 02:52:55 PM »

engine piston, not caliper

Greggo · « **Reply #4 on:** February 12, 2012, 02:55:23 PM »

ATF/Acetone mix...it's proven to be the best. The ATF is slippery, and the Acetone thins it enough to penetrate the stuck bits.

1974cb550k · « **Reply #5 on:** February 12, 2012, 03:29:44 PM »

Marvel Mystery Oil. Pour it in a steel coffee can and heat it with a propane torch. Pour it down into the cylinder or drop a piston in to free up stuck rings. As a disclaimer I would suggest not to pour hot MMO into a plastic funnel FYI.

splitt · « **Reply #6 on:** February 12, 2012, 03:52:23 PM »

Quote from: Stev-o on February 12, 2012, 02:24:01 PM

Acetone & ATF, 50/50. Not shaken or stirred, just pour!

Worked for me

+3

chickenman_26 · « **Reply #7 on:** February 12, 2012, 04:39:07 PM »

Worcestershire sauce.

Imago · « **Reply #8 on:** February 12, 2012, 04:44:57 PM »

Quote from: chickenman_26 on February 12, 2012, 04:39:07 PM

Worcestershire sauce.

I'm now hungry.

BobbyR · « **Reply #9 on:** February 12, 2012, 04:58:11 PM »

Quote from: splitt on February 12, 2012, 03:52:23 PM

Quote from: Stev-o on February 12, 2012, 02:24:01 PM
Acetone & ATF, 50/50. Not shaken or stirred, just pour!

Worked for me

+3

One last thing. The acetone really thins out the ATF so it can creep in easily. Once the Acetone evaporates the ATF becomes a lubricant again. The problem is the Acetone evaporates very quickly.

You can help it get a better result of you can cover the cylinders with Saran wrap to slow down the evaporation and allow the mixture to creep in further.

72500john · « **Reply #10 on:** February 12, 2012, 05:47:32 PM »

go to kanolabratories.com and order some "kroil" with a "Little heat" works wonders. my 2 cents.

Danno · « **Reply #11 on:** February 13, 2012, 12:19:05 AM »

I use both the acetone atf mix and on real bad ones that the atf acetone does not want to work on i use gun oil made by winchester it will creep in and derust at the same time but takes up to a week and is very exspensive 14oz is about 17 dollars and it has to be applied everyday till it is unstuck usually it takes 2 or three days but I do it with the head on and the plugs out and just try the kickstarter periodically the saran wrap idea may be good with the heads off if you are desperate enough to go get gun oil wallmart carries it

Blasbo · « **Reply #12 on:** February 13, 2012, 04:39:47 AM »

ATF/acetone, a little heat from a propane torch, a 2 x2 and a hammer worked for me.

750K · « **Reply #13 on:** February 13, 2012, 04:43:22 AM »

Will have to try this, I have a stuck 78 750 motor sitting on my bench I want to free up.

Dave K · « **Reply #14 on:** February 13, 2012, 05:51:07 AM »

I didn't use the acetone with the ATF, but probably should have as it would have worked faster. The piston on my XL 350 was free, but the rings were stuck. While I worked on other parts of the bike, the ATF soaked in the bore/piston for about 2mos. One day I turned it over and compression was back. It didn't take long to hook up a gas line and she was running.

turboguzzi · « **Reply #15 on:** February 13, 2012, 05:53:58 AM »

ok, will try ATF/Acetone today.... update in a week

Sam Green Racing · « **Reply #16 on:** February 13, 2012, 06:23:25 AM »

Boiling Deisel fuel oil, but be carefull.

Sam.

chewbacca5000 · « **Reply #17 on:** February 13, 2012, 06:32:18 AM »

After feeding her enough ATF cocktails to be agreeable try gently turning her over by hand. Avoid kicking you will get better results.

turboguzzi · « **Reply #18 on:** February 15, 2012, 08:36:23 AM »

OK,it's free!

tnxs for the tips

TG

Randy · « **Reply #19 on:** February 15, 2012, 08:39:03 AM »

A couple of shots of Jack, before I write the check to the mechanic

lone*X · « **Reply #20 on:** February 15, 2012, 11:17:20 AM »

TG, what of the suggested processes did you use? How much force was required when it broke free?

chickenman_26 · « **Reply #21 on:** February 22, 2012, 08:39:46 AM »

Quote from: turboguzzi on February 15, 2012, 08:36:23 AM

OK,it's free!

tnxs for the tips

TG

So the Worcestershire sauce worked, eh?

BTW, I didn't just post that to be funny. Believe it or not, I got that tip from a friend who develops American Honda's in-house training modules. He heard it from one of their techs. I've never tried it, and no - I don't believe it, either.

Really? · « **Reply #22 on:** February 22, 2012, 08:54:11 AM »

Quote from: chickenman_26 on February 22, 2012, 08:39:46 AM

Quote from: turboguzzi on February 15, 2012, 08:36:23 AM
OK,it's free!

tnxs for the tips

TG
So the Worcestershire sauce worked, eh? BTW, I didn't just post that to be funny. Believe it or not, I got that tip from a friend who develops American Honda's in-house training modules. He heard it from one of their techs. I've never tried it, and no - I don't believe it, either.

If it actually works, maybe it will be good for constipation!

BobbyR · « **Reply #23 on:** February 22, 2012, 03:51:30 PM »

Quote from: chickenman_26 on February 12, 2012, 04:39:07 PM

Worcestershire sauce.

It could work. The ingredients of a traditional bottle of Worcestershire sauce sold in the UK as "The Original & Genuine Lea & Perrins Worcestershire sauce" are malt vinegar (from barley), spirit vinegar, molasses, sugar, salt, anchovies, tamarind extract, onions, garlic, spice, and flavoring. The "spice, and flavouring" is believed to include cloves, soy sauce, lemons, pickles and peppers.

The molasses is known to work against rust.

Stev-o · « **Reply #24 on:** February 22, 2012, 05:15:25 PM »

At least you'll smell good if it shoots on you!

Really? · « **Reply #25 on:** February 22, 2012, 08:37:54 PM »

Great, when I am constipated and out of Pepto or those pills that soften ya up, I can drink a bottle of Worcestershire sauce.

Retro Rocket · « **Reply #26 on:** February 22, 2012, 09:19:54 PM »

Can you guys get penetrine over there..? That stuff is amazing.....

faux fiddy · « **Reply #27 on:** February 22, 2012, 11:53:58 PM »

I've been heating a set of 350 pistons and dunking them in ATF for months, I guess I need to break down and buy some acetone.

Are we talking about in the motor or out or either? Mine are out, someone said beat it with a stick of hardwood.

chickenman_26 · « **Reply #28 on:** February 24, 2012, 06:24:58 AM »

Quote from: fiddy of industry on February 22, 2012, 11:53:58 PM

someone said beat it with a stick of hardwood.

Or a stick of dynamite. Make sure it's the pistons that are stuck, and not the crankshaft.

Stu

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Author Topic: piston freeing cocktails? (Read 3807 times)

72500john