Transmission Pan

bartz paul

New member
Dec 3, 1997
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Manny:

All the experts I talk to say don't use a gasket with the Ragusa pan. Since
it's made out of aluminum, you won't get full advantage of the heat transfer
capability if using a gasket. Get some blue RTV sealant and use it on the
joint instead. Note that when using the RTV sealant it takes awhile for it
to harden. Make sure you don't operate the transmission prematurely or else
you will blow out the sealant.

I changed the filter in my transmission last October and used only the
sealant when reassembling the pan.

Paul Bartz

From: MTrovao [mailto:MTrovao]
Sent: Thursday, March 11, 1999 12:57 AM
Subject: GMC: Transmission Pan

I had the Ragusa pan installed for a couple of years, but recently removed
it to let all the fluid drain out. Switching to synthetic.

It came with a cork gasket and it was leaking through the gasket. Now I
wanted to use the gasket paper material. Had a hard time to find material
wide enough to make the gasket but did find it and made a gasket. Went to
the store to get a filter and they only had a kit that included the gasket
and filter. When I opened the box, noticed the gasket was made out of the
same material as the one I made. Yes, I used the new gasket.

Another thing I wanted to do was use hex bolts instead of the Allen bolts
the pan came with. For that I has to mill around each hole to make clear for
the socket.

The test will be this weekend when I'm taking the coach to San Felipe.
 
Rick:

I completely agree with your observations and cautions on the use of RTV.

During a conversation I had with Chuck Stoddard, owner of Caspro, he
mentioned not using a gasket with the Ragusa pan.

I'll talk to him again at Myrtle Beach about using RTV sealant and let
everyone know what he says.

Paul Bartz

From: RickStapls [mailto:RickStapls]
Sent: Friday, March 12, 1999 12:47 AM
Subject: Re: GMC: Transmission Pan

In a message dated 3/11/99 11:35:07 AM MST, s9d3452

All the experts I talk to say don't use a gasket with the Ragusa pan. Since
it's made out of aluminum, you won't get full advantage of the heat transfer
capability if using a gasket. Get some blue RTV sealant and use it on the
joint instead. Note that when using the RTV sealant it takes awhile for it
to harden.
Paul,
Don't mean to be a spoilsport, but all the "experts" I've ever read or
talked to strongly advise AGAINST using silicone sealer or other gasket
maker/sealer on automatic transmissions. The problem is that this stuff
oozes out as you tighten the joint, leaving blobs and strings of sealer
inside the trans. If one of these pieces breaks loose and circulates with
the fluid, it can really mess up the control valves. If you DO elect to use
RTV (room temperature vulcanizing) sealer, use it VERY sparingly, and check
your ATF strainer at each service.
One further point is that the aluminum oil pan is intended to transfer heat
from the transmission FLUID, not from the case. Unlike our exhaust
manifolds contact with the heads, it really doesn't matter if the oil pan is
in good thermal contact with the transmission case,