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Question Auto trans noises Solved? Pics attached

So as some may remember, I have been having some bad clunking from my auto trans 84 N/A that the Porsche dealer said was torque converter/flex plate; P/O had replaced damper.
So I removed the trans-axle and found no problems with the flex plate. After fighting the bell housing off, i found the retaining clip and spacer at the damper were not in place, and some damage to the damper and fly wheel. Could this be the source of my noise?





I am going to be replacing the damper setup with a flywheel/clutch plate setup with parts from a local guy who is parting out an 86. Decided against the full manual conversion at this time as my knees wouldn't take the stop and go of my daily commute. One problem though. When removing the trans-axle, I damaged the trans fluid sight tube. Anyone got one to sell?

Also, is this trans mound bad?

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1984 944 N/A auto, daily driver --- Trans currently getting swapped to a manual!
Old 10-13-2012, 04:28 PM
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Well there's a smoking gun. This means the flex damper can slide on the driveshaft if the retainer isn't there, which in itself may mean going to a static clutch setup is a good idea. I'm looking forward to reading how that pans out for you, as my wife's got an auto 944 (which has caused us a LOT of grief as of late). Are you planning to replace the flywheel bolts WYIT?

I'd say that tranny mount is good and stuffed.
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Old 10-13-2012, 04:39 PM
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I do so hope this is the problem! I do plan on new bolts when I'm in there, and a new rear main. Is the rear main the same thing that PP has listed as a "flywheel seal"? Do I need a tool to hold the crank while I remove and install the flywheel? If so, which one? I'm planning balance and cam belts in the near future (once the trans issues are fixed) so would this tool help there?
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Old 10-14-2012, 02:00 PM
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Originally Posted by arttrout View Post
I do so hope this is the problem! I do plan on new bolts when I'm in there, and a new rear main.

Is the rear main the same thing that PP has listed as a "flywheel seal"?

Do I need a tool to hold the crank while I remove and install the flywheel? If so, which one? I'm planning balance and cam belts in the near future (once the trans issues are fixed) so would this tool help there?
The RMS rear main seal is the "flywheel seal".
Search for proper installation and TechnoDuck does have the Porsche RMS installation tool to loan if needed. If you do not install the seal correctly it will leak.

I do have the special tool to hold the flywheel. This is a custom built tool. Normally sells for at least a dollar or so but I will give you the secret for free.

Get a 1/4" thick flat steel bar with a hole in the bottom about 2 feet long. Put a pressure plate bolt through the hole and screw into the FW. Put another PP bolt on the opposite side. The bar will lock in place when it hits the car body somewhere. This will allow you to remove the FW bolts using an expensive 12 point tool. Never a cheap Leslie set--it will strip.



GL
John
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Last edited by John_AZ; 10-14-2012 at 05:20 PM..
Old 10-14-2012, 05:18 PM
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Ive done the change over from the flex plate to a clutch setup with a rubber center clutch disc and it works great but I now have a rattle in the clutch area at idle. When you give it gas it quiets down and you cant hear it. But when you turn it off it rattles.
Old 10-14-2012, 06:31 PM
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Way cool tool John_AZ, I will have to make one. Mean while, I'm looking for one of these? I'm not sure I trust my plastic welding skills...



Are there any other sources of trans mounts? $146 each is a bit steep...
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Old 10-14-2012, 07:05 PM
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Status update:
I got a clutch, pressure plate and fly wheel used locally. Hope I got the right stuff. Also new trans mounts, rear main, pilot bearing and flywheel bolts

The pressure plate is a Sachs? (TVP GMFZ 255) the shop didn't remember its source. It seems to be a bit thicker than the flywheel/damper of the automatic though. The bolts that would fasten it to the flywheel only extend about 1/4 or so inch, 4 or so threads. On the auto, it was about half an inch or more. The bolts I have from the auto are 8 x 50, which seems to be what PP lists. Am I missing something?



The flywheel is from an 86 (p/n 944 102 105 5R with a P02 under it) , and seems to have 3 of those Allen screws along the outside edge whereas the setup from the auto had only the one. What are they? Part of the speed sensors? Should I remove the other 2?
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Old 11-08-2012, 09:08 PM
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The bolts for the clutch setup are longer than the bolts for the auto rubber damper. I am not sure of the differences of the early flywheel to the later flywheel, other than the number of sensor studs, but if you need one from an early car I have one I would let go cheap. The first flywheel I picked-up for my damper disc conversion was from an 83 and only had one sensor stud.
Old 11-09-2012, 06:07 AM
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Unhappy Please help if possible!

Ok, got it all buttoned up after the damper to static clutch swap and took it for a ride and...... it still makes some strange noises. The clutch replacement was straightforward and works like a charm, smooth shifts.

When I'm on the gas hard, it's as quiet as I would hope, but under light acceleration and coasting, there rattle/knocking noises from right around the shifter. I was thinking Torque Tube but when it was disconnected it seemed like the front and rear bearings were fine, good rotation and no play. besides a new trans, anything else anyone could think of to explain these noises.
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Old 11-25-2012, 02:07 PM
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If you can get it to make the noise while you are outside of the car you may find it is coming from the rear instead of the front. As to what the noise may be I haven't figured it out yet, and I am not sure I want to know.
Old 11-25-2012, 05:48 PM
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Ok, not sure what this means...
Took it to a local Porsche guy who wasn't too familiar with Auto's and he didn't know what the noises were either; drive was 20 miles each way and the thing shifted smooth as could be the whole time. As I got home, taking off from a stop was a bit slugish. Just went to move it and reverse was fine but accelerating forward felt like the breaks were on, but the car rolled easily. Any ideas? Maybe diff/pinion? I'm at my whits end. Threatening to leave it downtown with the keys but afraid they will bring it back. Maybe fix it with a match and gas can? Help!
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Old 12-01-2012, 06:56 PM
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Originally Posted by arttrout View Post
Ok, not sure what this means...
Took it to a local Porsche guy who wasn't too familiar with Auto's and he didn't know what the noises were either; drive was 20 miles each way and the thing shifted smooth as could be the whole time. As I got home, taking off from a stop was a bit slugish. Just went to move it and reverse was fine but accelerating forward felt like the breaks were on, but the car rolled easily. Any ideas? Maybe diff/pinion? I'm at my whits end. Threatening to leave it downtown with the keys but afraid they will bring it back. Maybe fix it with a match and gas can? Help!
Did you every find a solution to your problem child of a car? I'm about to try the conversion from the rubber damper to the static clutch/flywheel/pressure plate. I've read on some forums that the drive shaft and torque tube also need to be replaced. Let me know if you have any useful hints in all this.
Old 10-26-2020, 05:13 PM
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Originally Posted by jeffrsmith View Post
The bolts for the clutch setup are longer than the bolts for the auto rubber damper. I am not sure of the differences of the early flywheel to the later flywheel, other than the number of sensor studs, but if you need one from an early car I have one I would let go cheap. The first flywheel I picked-up for my damper disc conversion was from an 83 and only had one sensor stud.
I'm wondering if you might still have some parts for the conversion from the auto damper to the fixed manual clutch/pp/flywheel setup?

Old 10-26-2020, 05:15 PM
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