Atf-rtv

[contraption22]

I can never get my diff cover to seal on my 413. I have resealed it many times with no luck. I saw the other day that Mopar makes an RTV sealant specifically for automatic tranny fluid. Will this help at all? Is there a Permatex equivalent or is it a Mopar only item?

[86Shelby]

Have you tried Permatex's The Right Stuff? I have yet to have anything leak when I use that. Actually I've been using the Ford grey RTV which is the right stuff in a different dispenser. It's rather expensive but worth it. Get in good with a parts counter guy to get a nice discount.

On another note, did you check to make sure the cover is straight? Sometimes the bolt holes get deformed from overtighening and that helps promote leaks. If it's not straight use a hammer and a vise or work bench to tap it straight.

[contraption22]

Quote:

Originally posted by 86Shelby Have you tried Permatex's The Right Stuff? I have yet to have anything leak when I use that. Actually I've been using the Ford grey RTV which is the right stuff in a different dispenser. It's rather expensive but worth it. Get in good with a parts counter guy to get a nice discount. On another note, did you check to make sure the cover is straight? Sometimes the bolt holes get deformed from overtighening and that helps promote leaks. If it's not straight use a hammer and a vise or work bench to tap it straight.

I have "The Right Stuff" at work, i will have to give that a try. Until now i have been using Mopar Grey RTV which is super-strong stuff. Probably the same stuff you speak of. Perhaps i will try putting a new cover on as well... mine has been off many many many times recently, and it has to be pry'd off, so it's probably a little bent up. Thanks!

[csxt665]

The ATF-RTV from Mopar seems to be good stuff. Personally, I use the Mopar Engine-RTV on everything and it really works great. Fast cure time, and seals quite well.

Check out the Red sealant from Mopar. I believe it's an anerobic sealer. That stuff works great too.

If all else fails - JB WELD it.

Quote:

Originally posted by contraption22 I can never get my diff cover to seal on my 413. I have resealed it many times with no luck. I saw the other day that Mopar makes an RTV sealant specifically for automatic tranny fluid. Will this help at all? Is there a Permatex equivalent or is it a Mopar only item?

[turbovanman]

Just use a gasket, the aftermarket makes them and they work great. Its too hard to seal them as trans fluid is always leaking out and makes it hard to get a perfect clean surface! "thumbs up

[contraption22]

Who makes a gasket? Felpro? Another company? I had a couple from my trans kits, but i threw em away cause they looked paper thin.

I have an AWESOME pan gasket from mopar... its a steel gasket with a rubber coating that has probably been on and off a half-dozen times or more and always seals.

[turbovanman]

Quote:

Originally posted by contraption22 Who makes a gasket? Felpro? Another company? I had a couple from my trans kits, but i threw em away cause they looked paper thin. I have an AWESOME pan gasket from mopar... its a steel gasket with a rubber coating that has probably been on and off a half-dozen times or more and always seals.

Hmmmmm, that pan gasket sounds good, Mopar you say! As for the diff cover, my local trans parts store has them and there thick. Maybe check out some transmission shops in your area, they will have them.

[glhs636]

You may have to flip the steel covers over and tap them with a ballpeen hammer to dimple the holes the other way so when you tighten the bolts down it pulls the cover to the tranny without bottoming out first
Make any sense?

[flybyuin2.2]

the "Right Stuff" never leaks for me, and no cure time required, most silicones don't hold up to tranny fluid, that's why everyone was using gaskets years ago except Mopars(Mopar RTV), now there's much more advanced RTV's out there, some just for aluminum, others universal.