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From digest.v6.n455 Mon Mar 31 11:29:03 1997
From: "Steve D'Gerolamo" <>
Date: Mon, 31 Mar 1997 10:02:29 -0500
Subject: Oil Bypass Gasket Set <E30>

>From: William Proud <>
>Date: Sun, 30 Mar 1997 11:14:03 -0800
>Subject: E30M3 Lunch your engine for $5 !!!
>A word of warning for E30 M3 echo Shakespeares warning
>'Beware the Ides of March' I suggest 'Beware the oil bypass cap
>replacement kit'...part number 11 42 9 059 338.....and keep an eye on
>that idiot oil pressure light!!
>Let me relate my experience with this $5.38 kit.....The kit is designed
>to cure the nagging leakage problem that the original cap and seal had
>....this bypass is down on the side of your oil-filter mounting
>block/housing and controls the flow of oil to the oil cooler.

I am aware of Bill's situation as I sold him the kit that almost toasted his engine. These kits are only available from BMW (this was a factory kit in a sealed bag...not an aftermarket) and I've since spoken with the shop foremen from 2 different local dealerships as well as service Rep at BMWNA's Tech hotline. Each experienced mechanic has seen similar problems where the spring let go just after installation and the oil dumped out of the engine. However, each attributed this to their failure to seat the valve/o-ring assembly all the way and NOT a part failure. The o-ring will walk off the valve in some cases if the assembly is not seated properly [Note: Bill seemed to think that his original kit had a seal and not an o-ring....the o-ring, after years of compression, will look like an oil seal when the old assembly is removed]. This job is best done on the workbench (as I believe Bill did his replacement). This is not a difficult job but care must be clean and make sure the retainer clip and rubber o-ring are properly in place before restarting the car. SD Steve D'Gerolamo c/o The Ultimate Garage, Emerson, NJ Tel 201-262-0412 Email.... Web Site....
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