Rear main seal - 986 Forum - The Community for Porsche Boxster & Cayman Owners

wild1poet2 · 12-14-2005, 02:44 PM

Thanks MNBoxer for an excellent analysis. Gee, the 20 to 25% event rate actually sounds better than I was expecting from all the posts. I have to assume that they tested the prototypes and ran durability runs. The RMS on the prototypes must not have failed. Then they went into production and the flaw occurred there in the production process.

This problem must not be harming the PR and Marketing of the cars.

Brucelee · 12-14-2005, 05:37 PM

Too bad Dr. Deming is no longer with us. Porsche could use his talents.

dklumb · 12-14-2005, 08:38 PM

Thanks guys for all the feedback. I am taking my Boxster in tomorrow for the seal repair. I understand that they will use a go / no-go guage to determine how off center the cases are. This shop claims they use some epoxy mixture to help the cause. I will let you know how it goes.

Crashcup · 12-14-2005, 09:57 PM

Hey, I've got you all beat. I have a 2003 Boxster S. At 18,926 miles I had the oil filler tube hose replaced, the rear main seal and the intermediate shaft seal. That didn't stop the oil leaks. Now at 20,000, it's been in the shop a week to have all the seals around the spark plugs replaced. I've got a 330i BMW with 50,000 that hasn't leaked a drop of anything. I only have around 18 months left on the Boxster warranty so I guess I better start saving seal replacement. It's disappointing to hear that I have to replace it about every other tire change. I'd get rid of it if it wasn't a gift. Never look a RMS in the mouth, you know...

wild1poet2 · 12-15-2005, 10:21 AM

Dklumb - I Read On Another Forum That The Epoxy Fix Is Very Effective In Preventing Re-occurrence. Also, The Cayenne Rms Is Being Used Because It Is Harder And Not As Pliable As The 986/987 Seals And It Seems To Be Holding Up Well.

Let Us Know What They Tell You About Their Experience With This Repair. Good Luck.

dklumb · 12-18-2005, 07:50 PM

I got my Boxster back this weekend from the RMS repair. It was performed by an aftermarket shop. They said that my case bore was not off by much. They did use the epoxy and said that they have had good luck with this fix. The charge was $675.00. Not too bad considering the work involved. They said that the crankcase bolts had already been replaced with the new style and that the intermediate shaft cover was dry so they left it alone. Hopefully this one lasts for more than 20,000 miles.

wild1poet2 · 12-19-2005, 06:48 AM

Hey DKLUMB that sounds good. Good price especially if the fix lasts and good news on the case bore.