Topic: stuck ring removal Q?

[Don R]

 Does anyone know any tricks for getting stuck rings off of their pistons? I'm considering a warm atf and penetrating oil mix.
  Poking with an o ring pick got one loose but I want the pistons to stay as nice as possible.

[pjlogue]

I would try heating the piston using a heat gun (paint stripping type) and putting some brake fluid on the rings.  Do several heat cycles keeping the rings wet with brake fluid.  If they don't come loose, use a very small diameter drift punch with a flat end and gently tap the ends of the rings out.  This should loosen the rings without damaging the pistons. 

-P.

[grcamna2]

I have installed a pr. of plastic soft jaws on my small vise and placed the piston in there snugly across the piston pin bores.I would then use a type of pick such as you described Don to get one end of a ring to come-away from the piston far enough to be able to grab it with my small vise grips,then gently keep pulling that ring off.The ring may snap a few times but I would continue the same process.

[Tim2005]

soak it in diesel for a few days, then try some heat if it still hasn't moved

[Kevnz]

Try acetone. I had stuck carbs that nothing worked on, but acetone freed them up immediately.

[grcamna2]

I would try heating the piston using a heat gun (paint stripping type) and putting some brake fluid on the rings.  Do several heat cycles keeping the rings wet with brake fluid.  If they don't come loose, use a very small diameter drift punch with a flat end and gently tap the ends of the rings out.  This should loosen the rings without damaging the pistons. 

-P.

+1 

[Kelly E]

50/50 ATF and acetone works really well, some say it's better than all of the commercial stuff. The best I have used in a spray can is AREO KROIL.

[kghost]

ThreeBond engine conditioner.

Made to dissolve carbon.

[Tracksnblades1]

I would try heating the piston using a heat gun (paint stripping type) and putting some brake fluid on the rings.  Do several heat cycles keeping the rings wet with brake fluid.  If they don't come loose, use a very small diameter drift punch with a flat end and gently tap the ends of the rings out.  This should loosen the rings without damaging the pistons. 

-P.

^^^^^

+1  ^^^^

400* temperature stick on top of piston with Natilda La Burne providing the quick expansion..😜

Or safer for piston, but  more of a fire hazard, use the bearing heat method..
Cast Iron skillet with some 5w-20, piston top and rings submerged, heat skillet
bottom with Natillda La Burne until oil is visibly boiling…. Repeat as necessary..

[scunny]

I'll bite. what is Natillda La Burne. I tried google for no result.

[Don R]

I'll bite. what is Natillda La Burne. I tried google for no result.

I'm pretty sure oxygen and acetylene are involved. Fed through a rosebud tip.

 I sanded a tiny screwdriver down to make a tool that can pry the end gap open a bit, with some heat and kroil I should be good. They are soaking right now in acetone/atf.

[Don R]

 I re-read and think I tried all of the above today. With a few variations except straight acetone. Nothing to lose I'll do that one too. I got the non rusted cylinder's piston cleaned and ready to go.
 This thing has both one piece, and three-piece oil rings and one piston has pin oil holes, three do not. I'd say the turbo caused some grief, at least once.
 Maybe Coca-Cola next?

[Tracksnblades1]

I re-read and think I tried all of the above today. With a few variations except straight acetone. Nothing to lose I'll do that one too. I got the non rusted cylinder's piston cleaned and ready to go.
 This thing has both one piece, and three-piece oil rings and one piston has pin oil holes, three do not. I'd say the turbo caused some grief, at least once.
 Maybe Coca-Cola next?

Forgot to mention:
A really good 4000# Karcher type hot water pressure washer
will probably unstick your rings the quickest and cleanest. 😇
Interesting to hold them securely and safely.
Wear your protective gear. Those Karcher will cut a 2x4 off.
Not fast or pretty, but they’ll do it..😳

[Don R]

 I have not tried the pressure washer yet, acetone had no effect, nor did coca cola. lol. Something needs to eat the rust and not the piston.

[dusterdude]

Try vinegar

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[Alan F.]

Evaporust will only eat the rust and leave the other metals alone.

[Don R]

 That was my next plan, Alan.

[grcamna2]

Evaporust will only eat the rust and leave the other metals alone.

+1