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Message started by John E Black on 04/03/18 at 09:00:36

Title: Baked on Gaskets
Post by John E Black on 04/03/18 at 09:00:36

Howdy
Crankcase cover gaskets are totally baked on and very difficult to remove.
Was able to remove the right side gasket using 3M Roloc wheel and gasket remover, but left side access is too tight for the wheel, without removing the engine.
Does anyone know of if the 1" bristle wheel is too course for aluminum...or have any other suggestions???

Thanks in advance.

Title: Re: Baked on Gaskets
Post by justin_o_guy2 on 04/03/18 at 09:14:47

I'd try softening them up with transmission fluid or anything that you can think of.
I don't like any rotating scrubby stuff on aluminum gasket surfaces.

Title: Re: Baked on Gaskets
Post by Dave on 04/03/18 at 09:21:11

The problem with rotating wheels....wire or scrubby, is that they will round off the edges of the soft aluminum.

I try using a plastic scraper first...it is one I made by sharpening a piece of plexiglass. I also have some Ebony wood that work well and is sharpened with the same sharp edge as the plexiglass, and as a last resort I will use an industrial razor blade. You have to be very careful when using a razor blade - keep it very flat and be careful not to make any gouges...your goal is to use it as a wedge between the gasket and aluminum. (It needs to be a very new razor blade without any nicks or burrs in the cutting edge).

Title: Re: Baked on Gaskets
Post by batman on 04/03/18 at 12:14:56

You might be able to find small hand wire brushes with the brass bristles which MAY be soft enough not to harm (not sure), but I wouldn't use anything powered.

Title: Re: Baked on Gaskets
Post by justin_o_guy2 on 04/03/18 at 13:23:07

Patience beats repairs..

I've never seen any gasket removal product used.
But

Permatex® Gasket Remover – Low VOC Formula - …
https://www.permatex.com/.../permatex-gasket-remover-low-voc-formula
This low VOC formulation combines powerful gasket remover strength with an innovative delivery system. Its fast-foaming action penetrates the most stubborn or baked-on gaskets in 15-20 minutes

Search
Gasket remover

Title: Re: Baked on Gaskets
Post by eau de sauvage on 04/04/18 at 20:37:08

Permatex is not the magic it's made out to be, and it will damage the lacquer too, it does help a bit though.

Title: Re: Baked on Gaskets
Post by justin_o_guy2 on 04/05/18 at 09:38:16

There's plenty of options.
Search

Gasket remover

I never use it.
I'm patient and able to solve the problem without hurting the aluminum.
I hope you aren't peeling off a reusable gasket..

How you use a scraper matters.
Just straight into the edge of the gasket is not the only way. Sliding it, working it like skinning a deer, helps

Title: Re: Baked on Gaskets
Post by eau de sauvage on 04/05/18 at 10:49:28

I've never had to skin a deer but if I ever do I'll remember to slide that skin off just as I would a reusable gasket!

687771766B6C5D6D5D65777B30020 wrote:

Just straight into the edge of the gasket is not the only way. Sliding it, working it like skinning a deer, helps

Title: Re: Baked on Gaskets
Post by justin_o_guy2 on 04/05/18 at 12:11:27

Da BLADE, Boss, Da BLADE.

A skew cut would be the woodworking equivalent.

Title: Re: Baked on Gaskets
Post by Dave on 04/06/18 at 04:09:01

Is the gasket stuck to the cover.....or to the center case?

If it is stuck to a cover.....I sometimes use a sheet of sandpaper on a pane of glass to sand away the stuck gasket, and level the gasket surface.

Title: Re: Baked on Gaskets
Post by John E Black on 04/09/18 at 13:45:11

A belated Thanks! to everyone..all good info.

Especially if I need to skin a critter!

Now I just have to be patient.