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StienbargerR · Joined: 28 Oct 2005 Posts: 1362 Location: Richmond, IN

Hey guys,

If you have read some of my posts, you may be aware my car has some oil leaks/burns oil. Well, I have noticed that I have a noticeable pool of oil sitting in the low spots of the intake manifold...how would it get there? Is this a serious problem? I am planning on rebuilding the head this winter to fix the oil burning problem, would that probably cure the oil pooling problem?

Ryan
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1978 924 NA
-250lb lowering springs, Euro Pistons

Slam · Posted: Fri Aug 25, 2006 12:29 pm Post subject:

Dunno what your crankcase ventiliation system's like, but most oil in the airbox is put there by blowby. It's getting past your rings and blown into the intake tract. Porsche says not to worry too much about it unless things are very wet. Lots of guys here know more about how much is acceptable than I do, but I understand most of these cars have oil, at least some, in their airboxes.
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'84 944 - kid blew motor
'83 944 - resting comfortably. For 12 years
'87 944 - sideswiped by trucker
'80 924 - gone
'78 924 - gone
'77 924 - rusting comfortably

JB 924 · Joined: 03 Apr 2006 Posts: 606 Location: Hessen, Germany

My old air filter was soaked in oil, good to know it's normal. (The last owner didn't take very good caree of the car)

NikDev · Joined: 27 Feb 2006 Posts: 39 Location: Norway

Chaos · Joined: 07 Nov 2005 Posts: 289 Location: Newark, DE, US

924RACR · Posted: Sat Aug 26, 2006 1:02 am Post subject:

I would suspect that if it's on the outside of the intake, it's probably leaking from inside the intake (in my experience) - leaking out of the rubber boots. Indicates you may have a leaking or loose rubber boot, but also yes, at a certain point it's time for new rings.

Maybe you should plan a full rebuild this winter. Simply swapping in new rings and bearings can be done without machining work, if you do it before any damage occurs (meaning rebuilding due to age, not due to failure, not that you're likely to kill the motor before then).
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

JB 924 · Joined: 03 Apr 2006 Posts: 606 Location: Hessen, Germany

Wow, NikDev, those are definitely some sweet fender covers. What brand? And you make swapping the engine look easier than changing spark plugs.

-nick · Joined: 16 Nov 2002 Posts: 2699 Location: Cambridge, MA

Has no one suggested the valve cover gasket?

tip - use a 3/8" torque wrench to torque the cover nuts evenly and you'll never never have a leak.

Those fender covers look like flannel blanket + scissors + duct tape to me

StienbargerR · Joined: 28 Oct 2005 Posts: 1362 Location: Richmond, IN

hmm,

I will try torquing the camshaft cover. Now that I think of it, there is a nut that looked replaced, maybe it is loose.

Ryan
_________________
1978 924 NA
-250lb lowering springs, Euro Pistons

Slam · Posted: Sat Aug 26, 2006 9:21 am Post subject:

Nick's right. That'll teach me to post at 3:00 in the morning. I read low spots as being low spot in the airbox.

Hope you get the leak sorted!
_________________
'84 944 - kid blew motor
'83 944 - resting comfortably. For 12 years
'87 944 - sideswiped by trucker
'80 924 - gone
'78 924 - gone
'77 924 - rusting comfortably

D Hook · Joined: 02 Nov 2002 Posts: 3158 Location: Omaha, NE

NikDev · Joined: 27 Feb 2006 Posts: 39 Location: Norway