924Board.org

[Croshare]

Hi Everyone,
My son is the proud new owner of a 88 924s that we picked up on ebay. You might be asking "Why are you joining a Porsche board if your son is the owner?". Basically I am the resident wrench turner and he is just learning. That said, I'm the one that needs all the help . The car is in very good shape as far as interior and body go. The engine is another story entirely.

First problem with the engine is that the engine keeps blowing out oil filter O-rings. Has anyone has this experience and can you direct me to a possible soluton. I was thinking a stuck bypass valve? Any help would be greatly appreciated. I have over 20 yrs experience as an auto mechanic, but this is my first porsche and could use a little guidence.

-Jim
_________________
97 SL600
94 740i
88 924s (Sons)
98 Durango

[Paul]

Welcome to the board!

There is no valve, the filler tube is also an oil/air separator and has a vent hose. Make sure nothing is clogged.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

[Paul]

There's a lot of good stuff here:

http://clarks-garage.com/phpBB2/viewforum.php?f=3&sid=b3aaad63fb195f7976ddeed9aeac9c08
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

[Croshare]

There is no bypass/relief valve? what happens if you get a clogged oil filter?
_________________
97 SL600
94 740i
88 924s (Sons)
98 Durango

[Smoothie]

No 924S on my driveway, but a * Search for all terms on oil pressure relief valve in 924S Discussions brings back 15 topics. Here's a reply from another long-time and knowledgable member - http://www.924board.org/viewtopic.php?t=4612&start=1
(Pauls's always right on the money, but I'd guess he read too quickly and mistook "keeps blowing out oil filter o-rings" for "keeps blowing out oil filler..." ?)
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"..it's made in Germany. You know the Germans always make good stuff."


'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

[Croshare]

Is there a oil cooler intergrated into the radiator? The bottom of my radiator got damaged during transport of the car.
_________________
97 SL600
94 740i
88 924s (Sons)
98 Durango

[9xx]

Oil cooler is intergrated to the engine itself. It is on the exhaust side under a aluminium cover.

I had the same problem with my 944 S. The oil pressure relief valve was faulty and due to that oil pressure was very high all the time.

It blowed two filters before I realised what was going on. Quite messy with the oil spraying all around!


http://www.clarks-garage.com/shop-manual/lube-02.htm
_________________
Mikko

All gone: 931 '82 Alpine White, original option "220" G31 with LSD + 3 x 944

[Croshare]

Anyone know where I can get one at a reasonable price?

-Jim
_________________
97 SL600
94 740i
88 924s (Sons)
98 Durango

[Paul]

[gohim]

The best place to get a replacement OPRV (oil pressure relief valve) is a Porsche Dealer, or an aftermarket Supplier like Performance Products which is one a few aftermarket parts supply houses that is allow by PCNA (Porsche Cars North America) to buy parts directly from the PCNA Warehouse.

The OPRV is only used by Porsche in the 4-cylinder watercooled engines so I don't think there are any aftermarket manufacturers for this part and it will be expensive.

I suggest that you buy a copy of Excellence Magazine, and try phoning some of the authorized Porsche Dealers that advertise in the magazine that they are selling Genuine Porsche Parts at a discounted price a percentage above their cost, or a percentage off retail list price. You can also find the phone numbers for some good reliable aftermarket companies and Perfomance Products (who I can recommend).

You should also join the PCA (Porsche Club of America). Some Porsche Dealers and aftermarket suppliers offer a discount to exclusively to Porsche Club Members.

Don't waste your money on a used OPRV from a trashed engine. When an engine grenades, shrapnel from the damaged/destroyed engine components can get trapped inside of the OPRV (to get flushed into your engine later, or damage the OPRV, or prevent it's correct operation.

You should remove and replace the oil cooler seals while you are replacing the OPRV, and you will need a special tool to align the oil cooler housing to the engine block. This tool is required to align the OPRV passage which is located in the engine block and the oil cooler housing. If you do not use the tool, the OPRV can hang and fail to operate correct, resulting in excessive oil pressure, no oil pressure, and/or damage to the oil cooler housing, the engine block, and/or the OPRV.

There are two different version of the oil cooler alignment tools available. Only one is the correct one that will work with your engine. Which one you need will depend on which version of the OPRV was installed in your engine when it was built. The cost of the tool is about $20.

Expect the oil cooler reseal kit to cost about $30-$50.

[Croshare]

Thanks all for your help. I'll have to check around for a good price on the OPRV I'm and ex MB/BMW tech and am used to getting my parts at wholsale. when I saw $200 for the valve I got a little sticker shock. Glad the kids paying for it. Still cheaper then the $1500 Mastercyl I put in the SL last year.
_________________
97 SL600
94 740i
88 924s (Sons)
98 Durango

[gohim]

Make sure that you only use OEM Porsche oil filters (made by Mahle, and Bosch). They have a silicone flapper that will hold oil inside the filter when the engine is shut off. Most of the generic filters don't have the flapper, and since the filters are screwed onto the holder in an upright fashion, the oil can otherwise drain down and out of the filter leading to dry starts.