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#1
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63 torque converter cap?
I have had my 63 convt lemans for a little over 2 years and it has always had a bad transmission leak right at the torque converter.
After changing the diff seal and remounting the torque converter a couple times I gave in and took it to a transmission shop just to see what they said. 5 weeks later and a complete rebuild they are now telling me my leak is because I am missing a "cap" that goes over the retaining nut on the torque converter. I do not remember my car ever having such a thing. Is this a real part? How do I find one? |
#2
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cap
The OE Torque convertor nut contains a rubber o-ring to seal that seals the fluid. It is closed on one end and acts as the cap. I should have an extra.
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#3
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convertor nut picture
This is what it looks like. Notice the o-ring seal.
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#4
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Ok. I am trying to figure this all out. From here I understand that there is no other seal than the o-ring on the nut. The owner of the transmission place that has been rebuilding this says he has a tech book that states there is su[pposed to be a retaining "cup" of some sort. In the first picture you can see male threads on the torque converter that looks like it would hold something like this.
Also, there is about .100-.150" end play that keeps the o-ring from sealing. The cup is supposed to keep the converter pulled out against the nut/o-ring. Do I/transmission shop have the retaining ring and washer on in the right order? Am I missing something stupid simple? |
#5
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nut cap
There should be zero distance between the torque convertor and the cap. The seal you show between the two doesn't belong there. The cap screws tight against the machined area of the convertor. That is why it has an o ring seal.
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#6
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Mike,,,I believe the washer goes on first, then the snap ring, then the retaining nut. I will check a couple I have at home tonight. It looks like as assembled, the nut is bottoming out on the washer instead of the converter.
__________________
Keith Collier 61-63 Pontiac Tempest Tech advisor POCI.org |
#7
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There should be a flat rubber seal inside the cap.
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The difference between inlaws and outlaws? Outlaws are wanted |
#8
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It's like the blind nut is bottoming out on the shaft before it is able to close down on the torque converter.
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#9
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Do you mean the o-ring seal on the face of the nut or somewhere else?
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#10
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TQ convertor cap
These pictures are from a nonmolested 63 transaxle. See how it differs from your pictures? You have an extra seal on the shaft that should not be there.
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#11
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The one that I did was a 62, so it was different.
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The difference between inlaws and outlaws? Outlaws are wanted |
#12
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Thank you everyone for your help.
FYI, I just got off the phone with the transmission shop. They just talked to a tech that is forwarding pages from an original shop manual for this transmission. In it there is instruction for adding shims to take up the lash on the output shaft. that SHOULD (fingers crossed) solve the problem of why my end nut doesn't have enough travel to seal up on the torque tube. |
#13
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Has anyone had issues with their torque converter getting super hot? Just how hot should it get? Thanks!
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#14
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The transmission on my 2019 truck runs 180 to 200. That is with the lines from the transmission going to the cooler. The Tempest trans-axle is a self contained air cooled unit. I would expect somewhere between 180 and 250. The shop manual has pressure ranges, but no mention of temprature.
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If you built it, drive it. red 62 Tempest total stock restoration. white 62 Tempest modified, 61 389 Tri-Power, and a conventional drive train. |
#15
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The converter is the oil cooler for the transmission. There are sheet metal vanes on the converter & as the converter spins, it pulls air past/over the converter to cool it.
__________________
Keith Collier 61-63 Pontiac Tempest Tech advisor POCI.org |
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