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Join Date: Feb 2010
Posts: 920
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Stuck rings -What to do?
I am working on a 1967 Wisconsin 4 cylinder engine. I think one cylinder's rings are stuck. 0 compression, put a little oil in the cylinder and it jumped up to 30 PSI immediately.
What should I use to try and free them up? ATF? Marel Mystery Oil? Ideas...Let's hear them Thanks... |
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06-07-2012, 12:40 PM
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Take it apart and fix it if you want it to run right. Phosphoric acid will dissolve the rust, then oil might work.
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06-07-2012, 12:49 PM
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RETIRED
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Marvel Mystery oil....
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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06-07-2012, 12:51 PM
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Bill is Dead.
Join Date: Jul 2005
Location: Alaska.
Posts: 9,633
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Are you going to pour it in and let it sit?
Some old timers like wintergreen oil / methyl salicylate. Some people say a 50/50 mix of ATF and acetone.
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-.-. .- ... .... ..-. .-.. -.-- . .-. The souls of the righteous are in the hand of God, and no torment will ever touch them. |
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06-07-2012, 12:52 PM
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Formerly reformed
Join Date: Jan 2008
Location: Rutherfordton NC
Posts: 2,424
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I have been using Marvel with good results. Plus, it's inexpensive if it does or does not work. Have to rotate engine and such . . .
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1968 911P (Paperweight) |
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06-07-2012, 01:05 PM
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Parrothead member
Join Date: Jul 2003
Location: Monmouth county, NJ USA
Posts: 13,842
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Soak with ATF . I've loosened up frozen boat engines many times.
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Vinny Red '86 944, 05 Ford Super Duty Dually '02 Ram 3500 Diesel 4x4 Dually, '07Jeep Wrangler '62 Mercury Meteor '90 Harley 1200 XL "Live your Life in such a way that the Westboro Baptist Church will want to picket your funeral." |
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06-07-2012, 01:19 PM
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Join Date: May 2005
Location: Cridersville, OH
Posts: 1,879
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atf or seafoam. Soak over night a couple of times. I've done this to several Wisc. with great success.
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75 911 Indian Red- RUFWAN2B 2000 Boxster 2000 & 2007 Dobies www.stahlwerks.com Cages and preparation for your Porsche “People who never make mistakes must get tired of doing nothing” Bill : The origin of the orgy of Porsche |
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06-07-2012, 02:12 PM
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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,762
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Quote:
I tried the acetone/ATF mixture recently as a bolt loosener in lieu of PB Blaster. I think I'll stay with PB. The acetone evaporates quickly and you have ATF. |
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06-07-2012, 02:33 PM
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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
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I successfully un-rusted a once-hydrolocked inboard/outboard using PB Blaster & about 3 applications over 3 weeks. Oh, & a strong battery
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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06-07-2012, 02:44 PM
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Formerly reformed
Join Date: Jan 2008
Location: Rutherfordton NC
Posts: 2,424
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I don't care what type of success you guys have had . . . Marvel smells better. So there's something to be said for that.
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1968 911P (Paperweight) |
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06-07-2012, 05:10 PM
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Registered
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Location: Long Beach CA, the sewer by the sea.
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Quote:
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06-07-2012, 05:23 PM
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Registered
Join Date: Dec 2005
Posts: 3,384
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Try some Kroil by Kano Laboratories.
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06-07-2012, 08:16 PM
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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
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Unless I'm tuning, my nose is nowhere near my tail pipe.
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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06-08-2012, 05:06 AM
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Posts: 920
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Thanks for the replies. I soaked it in ATF last night, I'll check it Sunday and see if it's any better.
Someone said to rebuild it. I probably will and I would just tear it down instead of trying to free the rings but it is going to be a MAJOR PITA to get it out of the vehicle it's in |
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06-08-2012, 07:11 AM
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Da cab
