[DML] Delorean automatic pan gasket discussion (long)

[jordan rubin <nuttenschleuder@xxxxxxxxx>]

All,

     I have finally found and repaired the last of the
leaks in my automatic transmission.  This project was
starting to get frustrating as it was done more than
once without a solution to the leaking.  I have spoken
to some of you for more than a year about this topic.

     I though I might bring up some of this for a
discussion.  I dont assume to be right on this but I
may have a point worth mentioning.

     The project was as follows APR of last year to
find and fix the external leaks on the transmission. 
At the time I had believed that it was limited to my
pan and nothing else. (actually computer plugs, pan
and dipstick pipe) I waited to do my tranny filter
replacment and pan gasket at the same time as shown in
this old howto:

http://retroserver.no-ip.com/delorean/transfilter.html

Notice in the following picture, the 13 metal rings
which were part of the original gasket

http://retroserver.no-ip.com/delorean/transrepair/dsc01963x260.jpg

I had asked several people about these rings, and why
they do not fit in the new gaskets, most said not to
worry about it, what i didnt know was that many
delorean transmissions that I would see down the road
have pan gaskets that are RTV'ed shut.

In all honesty I had believed that the rings were in
fact for the old gasket and no longer needed heres
what happened.

I assume the rings did two tasks:

   1.  The ring height set the distance from the pan
to the tranny, effectively regulating the ammount of
pressure would be applied to the gasket, as it would
only press down to the height of the ring.  Pushing
only from the notches around the perimeter of the pan
rim.  See picture again

http://retroserver.no-ip.com/delorean/transrepair/dsc01963x260.jpg

   2.  The rings would allow the pan to be tightened
down to the required 3-4 N/M, exerting pressure only
where the rings are, instead of the 3-4 NM on the
gasket itself


If you were to follow the instructions in the book and
use the gasket without the rings the following would
happen.


    1.  You would not be able to torque down the pan
gasket to the required 3-4NM without effectively
destroying the gasket.

    2.  If you were able to achieve 3-4NM, the pan 
would be on tight enough that the notches on the
perimeter would be pressed against the mateing surface
of the transmission, by continuing to tighten, the
areas around the bolts would be pulled up to the
transmission while the notches would hold the rest
back causing the pan to be perminantely higher around
the holes.



I assume the following.....


    1.  I was wrong for not modifying the new gasket
so the rings could be pressed into it.


    2.  The standard install works without the rings
and completely full of crap.


    3.  Following the instructions with a gasket
without the metal rings causes the tranny pan to leak
and or destroys the gasket and pan.


If the answer is 3 Id have to ask why the rings are
not sold with the gasket, and with a gasket where the
rings could be put in?

Your thoughts


Jordan
11613  Leakfree



 







	
		
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