tranny pan gasket

[76bonanza]

one more trans question I have a rubber gasket and a cork gasket. Which one is best. Also do I use any rtv any were or on the bolts?

Thanks

[Sweet72]

Either gasket is fine, and I wouldn't risk silicone in a auto trans., too many close tolerance parts to get fouled or plugged up if it comes loose, filter or not. Just make sure your pan flanges are straight and torque it down correctly.

[76bonanza]

It is a brand new b&m aluminum pan, so it is straight and the flange is thick I dont even think I could warp it.

[Longhorn Man]

rubber. hands down.
Lay it in the sun tomorow, place a salt and pepper shaker, or something else small, on the areas that won't lay flat. After sitting in the sun a few hrs, it'll be ready to sit flat on it's own. Toss it on the pan and put the pan on.
i find that putting bolts in the 4 corners...but only a few threads in, so the pan is dangling, helps a lot. Now you can go through and install all the other bolts in the same manor, and you can SEE if the gasket fell off to the side. Once you have all the bolts started, tighten them down with a 1/4 inch drive, and only use one finger on the rachet to tighten it. If you use more than one, it's VERY easy to over torque it.

[76bonanza]

Really I thought for sure cork. The cork one came with the pan the rubber one with the filter kit. I layed the gasket down and then layed the new pan on it to flatten the gasket. The bolts that came with it use an allen type wrench to tighten (maybe they did that to keep you from over torqueing them?)

[junkyardjohn]

I Always Use Cork. Good Thick , Dry Cork Gaskets. I Made Friends With A Guy That Owns A Tranny Shop, & He Buys Gaskets In Bulk. I Get Them From Him For $2 Each. They Are Thick Enough That They Won't Fold Without Snapping. John

[Mudder]

I vote for cork.

[pharcydekm]

Neopreen gaskets work best. I have yet to see a tranny shop that uses cork but I'm sure they are out there. But you have my vote for what its worth.

[Longhorn Man]

that's kinda what made me try the neopreen ones (I said rubber, but I was at a loss for the right word...thanks)
At work, we'll only use cork if we have looked everywhere else *including the dealers who hardly ever use cork anymore* and can't find a good one.

[76bonanza]

so the rubbery one is neopreen?

[76bonanza]

One more question the pics below are my new pan and hardware. They gave me three washers small thick bigger thinner and lock washer. Funny thing is they only gave me two lock washers? What should I use in what order? The pan has raised reinforced shoulders for the bolts. I would think I would use one flat and then the lock? Or just the locks but they only gave me two of those? I can reuse the ones on my pan now.
Thanks for all your help just dont want to do this install over again.

[76bonanza]

any one

[pharcydekm]

usually the aluminum aftermarket pans come with allen head bolts with lock washers. It could have been packaged incorrectly. I would suggest getting some small flat washers and lock washers too. You want to put the flat washer to the pan and the lock washer ontop of that so that the lock washer is between the flat washer and the head of the bolt. I know seems dumb to explain how to install a lock washer but I recently purchased a truck and the lock washers where installed on the head side of each bolt not the nut side. Also the previouse owner put lock washers on many bolts that had lock nuts. So never assume that someone knows how it works is my new motto. Hope it helps!!

[76bonanza]

thanks pharcydekm I think they must have ment to add a bag of lock washers and instead added that other bag of reg washers. Can you reuse lock washers? Also why dot hey use allen head bolts? to make it harder to over tighten?

[pharcydekm]

I have no idea why they use allens other than they look cool, and the head on an allen bolt is smaller than it would be if they were hex head. I wouldn't say it is for overtightening purposes because you can definatly overtighten an allen head. When we do them at my shop I use my short 3" 3/8" drive rachet and only use my wrist to tighten rather than my arm. Make sure the surfaces are very clean and slap that puppy up there and run with it.

[76bonanza]

Thanks for everyones help just got done looks all good one trip no leaks so far so good. here are some pics they suck but here they are.

[corn]

My guess is the 2 locks are there so if you are running a floor shifter (B&M also sells those too ) they are for the cable bracket. I wouldnt worry too much about locks on bolts that you dont want real tight...