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87 Oil Pickup Tube

 
Old 03-10-2019, 04:33 PM
  #1  
Bill Lynch
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Default 87 Oil Pickup Tube

I broke a golden rule - if it ain't broke, don't fix it.

I'm in a very long rebuild. Had engine started, got oil pressure but heard rod knock. while replacing rod bearings decided to replace the oil pickup tube seal. Figured old was bad, new is good. Now I have no oil pressure. suspension and pan back off, Figured i just did not toque the pickup tube down far enough, so I snugged them some more. Now I have two issues
1. I don't think I'm getting the deformation on the seal necessary to seal the joint
2. I think I stripped the M8x1.25 thread up inside the block, beyond the girdle

I need a picture of a properly installed pickup tube showing the gap. I have included mine below.
I have no discernible gap between the flange and block at the bolts

Background -

bought and installed a new oil pump gear and O-ring and pretty sure that is not an issue

Has anyone used a sealant in addition to the seal
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Old 03-10-2019, 05:09 PM
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Bill Lynch
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Some additional - Seal PN is 944.107.136.05 and it looks pretty small for the size of the counterbore its supposed to seal in. I assume that when properly installed this should be both a face seal and a bore seal

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Old 03-10-2019, 05:58 PM
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wildcat077
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Bill,

I still have my old engine block on a stand with the pan off , i'll try to get a few pics for you this week ... the pick up
tube is still attached !
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Old 03-10-2019, 07:08 PM
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T&T Racing
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Originally Posted by Bill Lynch View Post
Some additional - Seal PN is 944.107.136.05 and it looks pretty small for the size of the counterbore its supposed to seal in. I assume that when properly installed this should be both a face seal and a bore seal
  • The p/n I ordered was 944.107.136.05 but I have not installed it. The Porsche part is black and vertical side cannot be compressed with hand pressure.

Last edited by T&T Racing; 03-11-2019 at 02:38 PM.
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Old 03-10-2019, 08:30 PM
  #5  
Bill Lynch
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I believe that I bought an OEM part

Have you replaced one before had better luck seating this? I can actually see gap between the seal and the bore. Cross section of the wall looks like it should be 1.5 to 2 times current thickness. Just looks totally wrong
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Old 03-11-2019, 01:19 AM
  #6  
951and944S
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There is definitely some confusion with this seal.

I seem to have to resolve it every time I assemble a bottom end.

Will check if I made notes last time.

T
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Old 03-11-2019, 09:50 AM
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I came across this (again) recently so my memory is quite fresh on the matter. I didn’t make notes but iirc there were three seals in the package that were contenders, a black one, a clear and an orange. The black one was the only one that fitted the pipe diameter perfectly but it seemed too tall and got deformed when tightened. However there is a black oil cooler seal that is the same diameter but shorter and fits perfectly. So I concluded that they mixed the seals up when packing and this wasn’t the first time, so it’s a common occurrence to watch out for.

Last edited by MAGK944; 03-11-2019 at 11:05 AM.
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Old 03-11-2019, 11:00 AM
  #8  
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Here you go ... the gap appears tighter and seems like it's a black seal
Hope this helps !
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Old 03-11-2019, 02:49 PM
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The color of the sealing ring is black and it is in this package, Made in Germany and Porsche AG. I have read any other sealing ring that is not a Porsche AG Made in Germany part but listed with Porsche p/N is suspect and should not be used.
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Old 03-11-2019, 03:43 PM
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Pretty sure seal that OP has is correct.

Part # went from ending 03, to 04, now 05.

Don't know where he sourced it, but it was pulled from a bin of multiple quantity and a label printed and bagged.

For sure, a sealed factory part would be preferential.

T
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Old 03-12-2019, 07:51 AM
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The oil pump probably just lost its prime. Prime the oil pump and try it again.

Your seal looks correct to me.
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Old 03-12-2019, 01:43 PM
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I wanted to chime in on this thread because I'm going through the same issue as the OP. The "correct" factory pickup tube seal fits on the tube nicely, but is too small to fill the bore in the block. I decided to give it a try anyway and I was happy to see that I as torqued down the bolts, the seal compressed and filled the space.


This compared to the old seal that I removed, which seems like to was too large and got squished out of the bore.



For the OP, did you end up trying that seal as well? I'm wondering what people think of the fitment of that new seal. I want to move on to installing the oil pan, but not until I'm sure this is right.
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Old 03-12-2019, 02:55 PM
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Originally Posted by 968to986 View Post
I wanted to chime in on this thread because I'm going through the same issue as the OP. The "correct" factory pickup tube seal fits on the tube nicely, but is too small to fill the bore in the block. I decided to give it a try anyway and I was happy to see that I as torqued down the bolts, the seal compressed and filled the space.


This compared to the old seal that I removed, which seems like to was too large and got squished out of the bore.



For the OP, did you end up trying that seal as well? I'm wondering what people think of the fitment of that new seal. I want to move on to installing the oil pan, but not until I'm sure this is right.
By factory, you mean Porsche part in post #9. OP's seal ring is OEM, not Porsche and as previously stated, the OEM can cause problems.
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Old 03-12-2019, 08:15 PM
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Yes my seal has packaging, part #, and Porsche AG just like in post 9.
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Old 03-15-2019, 06:02 PM
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When I rebuilt my engine, I bought a new pickup tube and seal ring from the Porsche dealer. The seal looked just like the one in post #5 - looks like a wedding band. I didn't watch to see if it squished out or not, but I can tell you that my engine runs perfectly with good oil pressure.
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