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name that leak: oil pump, valve cover, or...?

I'd done my VC gaskets (rubber type not paper) not so long ago, dunno if I over tightened them or what but they weap a bit - mostly if the car sits for long periods (normal). I did go back thru them and tightened a few.

But this leak irks me, and I'm thinking it's no the VC unless it's from the upper rear corner which I'd find odd:



Is it the oil pump? Or, something from the top portion of the engine coming down?? 7th Fetzer Valve maybe???
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Paul... CT | '87 930 | '07 //S6 v10 JNR | '98 ///M3 vert |
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| '01 ///M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 //S8 | '95 //S6 6gang | '88 ///M5 | '87 190E 2.3-16 |
Old 03-10-2014, 07:19 PM
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Don't ask me about oil leaks....
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Old 03-10-2014, 08:37 PM
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Paul, that definitely looks like it "could" be coming from the scavenge pump - been weeping for a long time given the condition of the oily buildup. Maybe you already know this, but in the linked PET pages 63-64 show all of the pump seals.

http://www.porsche.com/all/media/pdf/originalparts/usa/911_USA_87_89_KATALOG.pdf
Old 03-10-2014, 08:37 PM
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OK Paul, now you're getting picky - another project?... that's typical "marking" of our cars. BTW, it is about time that you and Ronnie are behaving like reasonable people... :-)
Old 03-11-2014, 04:38 AM
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heh, this is merely my measly peasly version of "while yer in thar"-itis... 'tis all.

Quote:
Originally Posted by Miguel Antonett View Post
OK Paul, now you're getting picky - another project?... that's typical "marking" of our cars. BTW, it is about time that you and Ronnie are behaving like reasonable people... :-)
now HOLD ON THERE A SECOND!!!

I will NOT stand for that type of flagrant chastising and generally offensive disparaging assaults to my already tarnished character good sir! Reasonable? Me!?!? Unpossable!!! I'll try harder, I promise!

(for anyone who'd not figger'd it out... Ronnie and I thorrrrrroughly enjoy / encourage a ripegood baulbust... it's toooooootally in jest. Srsly.)

Not so much as picky, as, it's always nice to preserve the liquid $$$ inside the engine rather than having to keep pouring it out of me wallet. That and the general mess / burnage onto the header - weaps are one thing, bongresin's another.

Chris... no comment 8-). D'oh!

Ronalot... thanks for that link, I'll have a looksee. Wunder if it's something that is good to do in conjunction w/ cams? 3/29 for those, so would be opportune!


ps. Ronnie... FU!
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Paul... CT | '87 930 | '07 //S6 v10 JNR | '98 ///M3 vert |
past:

| '01 ///M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 //S8 | '95 //S6 6gang | '88 ///M5 | '87 190E 2.3-16 |
Old 03-11-2014, 04:55 AM
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LOL....

I am saying nothing....

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Old 03-11-2014, 10:19 PM
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If you're pulling the cams it's super easy to change the pump seals. One round seal that is pressed in the pump back cover like a main seal and one paper gasket between the back cover and the cam housing. 10mm bolts and 5mm allens. You will have to pull that apart anyway to get the cam to slide out if you still have the original belt pulley on there.
Old 03-12-2014, 03:01 AM
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NICE

I was hoping ^that'd^ be the case. Heck I'll change those seals then anyway simply because.

Awesome.

And... fingers crossed... mebbe that's my issue (well, a teeny tiny ONE of them at least... it's a pretty long coughinfinitecough list?)...
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Paul... CT | '87 930 | '07 //S6 v10 JNR | '98 ///M3 vert |
past:

| '01 ///M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 //S8 | '95 //S6 6gang | '88 ///M5 | '87 190E 2.3-16 |
Old 03-12-2014, 05:36 AM
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ps. PET lists item #34 as "radial sealing ring" - do I need that as well or is that re-used?

and on that same page / diagram, but separately... are the turbo drip tank studs sold separately? Don't see them delineated here? If not, anyone know the stud specs (a layup for ya there, Ronnie!)? ***disregard, I found it on another page - for the turbocharger***
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Paul... CT | '87 930 | '07 //S6 v10 JNR | '98 ///M3 vert |
past:

| '01 ///M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 //S8 | '95 //S6 6gang | '88 ///M5 | '87 190E 2.3-16 |

Last edited by krasuskyp; 03-12-2014 at 06:25 AM..
Old 03-12-2014, 05:55 AM
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There's also an inexpensive 0-ring that fits in between the two halves of the scavenge pump housing.
With the way oil can be blown around back there your leak could also be from a rocker shaft or where the cam tower is sealed to the top of the #3 head.

If you spray the area with engine cleaner like the original liqued gunk (the foaming engine cleaner stuff is practically worthless) and hose all the greasy dirt off good and clean with a hose or pressure cleaner then it will be much easier to see where it's coming from after driving an hour or so.
Old 03-12-2014, 05:57 AM
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Hey guys,

Is this an 'easy' repair that can be done with the engine in the car? Or is it more involved (i.e. having to pull the cam) to properly do the fix?
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Old 03-12-2014, 12:14 PM
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Talk about a sore subject, who of us do not have oil leaking from, ... take your pick from several at least. Our '87 930 has gotten bad, my gut is telling me to pull the engine and go through it, maybe including a top end job. With 86k miles and never torn down (as far as I can tell) it seems like the logical decision.

Anybody else in this boat ??
Old 03-12-2014, 04:59 PM
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Quote:
Originally Posted by 930cabman View Post
Talk about a sore subject, who of us do not have oil leaking from, ... take your pick from several at least. Our '87 930 has gotten bad, my gut is telling me to pull the engine and go through it, maybe including a top end job. With 86k miles and never torn down (as far as I can tell) it seems like the logical decision.

Anybody else in this boat ??
Yep, right now actually. I've got the engine out to replace the cam seals behind the timing chain boxes and a few other minor issues. However my scavenge pump is currently not leaking *knock on wood*.

If the scavenge pump seal/gasket can be replaced easily with the engine in the car I'll probably just wait until they start leaking. But... if it's not an easy fix with the engine in the car I should probably go ahead and do this now.
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Old 03-12-2014, 05:13 PM
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Quote:
Originally Posted by 930cabman View Post
Talk about a sore subject, who of us do not have oil leaking from, ... take your pick from several at least. Our '87 930 has gotten bad, my gut is telling me to pull the engine and go through it, maybe including a top end job. With 86k miles and never torn down (as far as I can tell) it seems like the logical decision.

Anybody else in this boat ??
You could say that, I already fell overboard.
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Old 03-12-2014, 05:24 PM
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The way I find leaks is clean everything spotless. Then, simply drive around and you'll easily see the source in most cases.
Old 03-12-2014, 05:28 PM
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Short version:
Bought my car out of town, two clean ppi's. Never trust an out of town ppi!
Had it shipped directly to my shop to have my guy go through it....leaking like a sieve from the number 2 cylinder onto header. Got it for a very decent price, as is, ppi shop was useless. Dealer did offer to buy it back (etc$$)but it was such a nice car/price otherwise so I bit the bullet for a top end reseal, wife psyched.
Ended up doing a lot of while you're in there stuff. Now car is nearly done, very close to a stock-ish restoration, all new, nearly perfect. Pictures soon!
I've had tons of offers on it, the market is hot on these cars right now.
Lesson learned!
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Old 03-12-2014, 05:48 PM
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Quote:
Originally Posted by krasuskyp View Post
I'd done my VC gaskets (rubber type not paper) not so long ago, dunno if I over tightened them or what but they weap a bit...
I'm going back to paper, never leak so much as soon as I put the silicone one on.
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Old 03-13-2014, 01:36 AM
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Quote:
Originally Posted by Kaefer View Post
Hey guys,

Is this an 'easy' repair that can be done with the engine in the car? Or is it more involved (i.e. having to pull the cam) to properly do the fix?
Does anyone know the answer to this?!

If not - Paul can you let us know what actually needs to be done when you do this repair?

Thanks!
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Old 03-14-2014, 04:30 AM
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Sure it can be done in the car. But it's easier when out.
Jack up car
Pull rear drivers side wheel
Undo both oil lines (21mm I think)
Unbolt pump cover
Unbolt cam drive gear
Unbolt rear housing
Change seals
As Haynes says, replace us reverse of removal.
Old 03-14-2014, 04:57 AM
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