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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
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
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.
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
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.
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.
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.
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.
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.
03-10-2019, 04:33 PM
87 Oil Pickup Tube
