Removing gasket residue - Chevelle Tech
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post #1 of 19 (permalink) Old Sep 20th, 19, 8:34 PM Thread Starter
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Jim
 
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Angry Removing gasket residue

Toyota pickup timing cover to water pump, cover surface. Most of old gasket peeled right away, but there are few small stubborn areas. Aluminum cover. I remembered some gasket remover I bought 10-15 years ago that worked great. It just loosened up the old gasket (probably started to dissolve it). I don't remember the brand, but it might have been Permatex. So I went over to NAPA and they had one Permatex. Foaming liquid comes out through a small brush. Clearly not the same type stuff. You're supposed to apply it and wait 15 minutes before scraping off with a plastic scraper or wipe off with a rag. Doesn't work.

I remember the old stuff contained methylene chloride - like paint stripper. THis Califonia, so I'm sure that anything that is effective is banned now. tried alittle PB Blaster on a rag, and it seems to work a little bit better. I hate to use a razor scraper on aluminum, but I might be forced into that. Anybody have a good method of dealing with baked on gasket on aluminum?

I really don't want it to leak after I get done with this. I just replaced the radiator and hoses, and that fixed most of my coolant leak, but there was still some coming off the bottom of the pump.

Thanks in advance, Jim
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post #2 of 19 (permalink) Old Sep 20th, 19, 8:46 PM
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Re: Removing gasket residue

Get your scraper out and Git r done. Terry
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post #3 of 19 (permalink) Old Sep 20th, 19, 10:29 PM
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Re: Removing gasket residue

If you can, give the PB Blaster some more time to work!

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post #4 of 19 (permalink) Old Sep 20th, 19, 11:08 PM
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Re: Removing gasket residue

The methylene chloride removers are gone. (Yes, the Napa spray gasket remover was basically the same stuff as paint stripper.) 3M roloc disk is a good mechanical way to remove a gasket.

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post #5 of 19 (permalink) Old Dec 24th, 19, 2:48 AM
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Re: Removing gasket residue

Quote:
Originally Posted by zeke67 View Post
3M roloc disk is a good mechanical way to remove a gasket.
Good way to remove some of the aluminum, and to put abrasives...everywhere.


They have no business anywhere near stuff you care about.

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post #6 of 19 (permalink) Old Dec 24th, 19, 10:34 AM
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Re: Removing gasket residue

Plastic scraper or razor blade is your best bet.
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post #7 of 19 (permalink) Old Dec 24th, 19, 12:40 PM
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Re: Removing gasket residue

Strip Discs come in various sizes





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post #8 of 19 (permalink) Old Dec 24th, 19, 1:34 PM
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Re: Removing gasket residue

https://gm-techlink.com/?p=7689

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post #9 of 19 (permalink) Old Dec 24th, 19, 5:42 PM
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Re: Removing gasket residue

Iíve used Lectromotive or Carburetor cleaner to soften hardened gaskets for removal. Before the advent of aluminum parts we always used a wire wheel on a drill to strip gasket surfaces.
I had a Bluepoint gasket scraper that was superior. Pisses me off to get old and lose your stuff.

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post #10 of 19 (permalink) Old Dec 24th, 19, 6:43 PM
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Re: Removing gasket residue

Quote:
Originally Posted by dream66 View Post
I bought theses same discs, and had them disintegrate almost instantly, i used them on my air die grinder. Terry
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post #11 of 19 (permalink) Old Dec 24th, 19, 6:52 PM
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Re: Removing gasket residue

some discs are rpm rated and will come apart if ran too fast, happened to me with porting rolled sanding rolls, I'd try foaming degreaser or paint stripper but don't let any get where it shouldn't be, and nothing corrosive that'll eat aluminum


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post #12 of 19 (permalink) Old Dec 24th, 19, 9:22 PM
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Re: Removing gasket residue

hi
Abrasive discs on drill can be a bad thing for the inexperienced . There are different grades use a soft disc to start.
Never use on heads or block decks

Better methods .
gasket scraper
Use 1 inch emery tape 60--80 grit
razor blade
wipe surface clean with solvent =white spirit /carby cleaner etc
use compressed air to blow out debris
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post #13 of 19 (permalink) Old Dec 25th, 19, 1:15 AM Thread Starter
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Re: Removing gasket residue

Quote:
Originally Posted by Schurkey View Post
Good way to remove some of the aluminum, and to put abrasives...everywhere.


They have no business anywhere near stuff you care about.
I agree. Never even considered any of the truly abrasive stuff aluminum oxide down to scotchbrit etc etc. Finally just used the PB Blaster and razor blade. I finally figured out for me, to ease gasket scraping nect time, just make sure its flat, clean, no heavy scratches, nicks etc, and stick on a (quality) dry gasket and torque 'er down.
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post #14 of 19 (permalink) Old Dec 25th, 19, 3:06 AM
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Re: Removing gasket residue

I use Acetone, or MEK, and a putty knife. Just be careful with a the putty knife not to go at a steep angle. Keep the angle shallow or you might put a nice groove or gouge into the gasket surfaces. Places like Lowes and Home Depot still sell cans of Acetone and MEK in thier paint section aisles. And I think those suggestions of using abrasive wheels are nuts. Sounds like a good way to completely ruin the gasket surfaces of aluminum engine parts, causing serious leaks in the future.
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post #15 of 19 (permalink) Old Dec 25th, 19, 7:39 AM
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Re: Removing gasket residue

The Roloc disks not only dig holes in aluminum bat also spray the abrasive all over the place. Use with extreme caution.
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