Defective Exaust Valve Guides

[WHITE 993]

This is my fourth porsche and possibly my last due to the fact that
Porsche North America will not consider compensation for the
work required to repair the defective soft exaust valve guides.

I am sure that everyone is aware of the Check Engine Light
problems associated with the clogged air injectors due
to soft defective valve guides.

Has anyone had success in collecting from Porsche North
America in regard to this issue.

Does anyone have the address for Mr. Peter
Schwarzenbaur. He is the President of Porsche North America.

I would also like the name and address of the President
of Porsche in Germany.

I plan to send the defective exaust valve guides to these gentleman so they can analyze them and then use them
for desk decorations to be remided about all the people
that they have screwed in the USA.

I will not give up until I get a check from Porsche.

Thank You.

[gamma]

What kind of mileage is on your car? Kevin

[GarryW]

What model and year car?

[WHITE 993]

Thanks for the replies.

The car is a 97, 993 with 57,000 miles.

Porsche customer relations is claiming no knowledge
of the defective soft exaust valve guides. Maybe they
have never read the Rennlist articles, the Pelican articles
nor Excellence magazine.

Porsche customer relations is also claiming that they
will not divulge the name and addresses of the President in USA
and Germany.

Typical corporate nonsense that I will get around.

The sad truth is that Porsche is trying to avoid the truth
in regard to an engineering error.

I have had a 59 A coupe, an 85 Carrera 3.2 and I still also have my 73 RS clone.

The 993 is a wonderful car but I am dissappointed in the position
that Porsche has taken on this one.

Thanks, Eric

[flyenby]

keep us posted on what happens..................

[WHITE 993]

I am going to take Porsche corporate on with this issue.

Anyone who spent approx $5000.00 for the same repair interested in getting in on the action?

Thanks, Eric

[1moreopinion]

I do not get your legal position. You bought a used car with no warranty.

There are many 964s and 993s out there that have never been rebuilt with 3x the milage and operating with no trouble.

If I were Porsche, I'd tell you to jump in the lake.

That car is 9 years old and you'd like them to warranty a repair that was most likely caused by either poor driving habits or poor maint or both.

[WHITE 993]

Their are many 993 cars out there with obd1 diagnostics that
do not report the problem but the exaust valves in those engines
are most likely wobbling around also.

I suggest that you go do some research on Rennlist, Excellence
magazine, or with any qualified Porsche facility including any dealer.

You may learn something about this problem and you may learn
about the liability that the factory has for a poor engineering
decision.

You may also learn that the factory has already reimbursed some
customers who had connections, even if the cars were out of warranty.

Sounds like you just like to lay back and let things happen to you.

Enjoy

[Bill Verburg]

There is little doubt that the oem guide material isn't as durable as some of the aftermarket versions, there is also no debate that OBD2 is more sensitive to various issues than OBD2.

But the type of usage that the car has seen is also a factor, lots of short trips/around town sort of driving seems to be a contributing factor, more to clogged SAI ports than to worn guides, but a contributor to CEL issues anyway.

I am not defending Porsche(or any other manufacturer on this issue) just stating some facts.


I must admit that when I shopped 993s I refused to seriously look at OBD2 cars for this reason, I am sure that I am not alone, and that can't be good for Porsche's business plan(or Audi or MB or BMW for that matter) They all really need to get their collective acts together.

Lastly I haven't a clue as to wheter Japanese or American manufactureres are any better, as I haven't owned any for decades.

[1moreopinion]

The consensus seems to be that the valve guide material is softer then then the valve. There is no consensus on the material being inferior for the intended application.

There is consensus that car usage likely is a key factor in how much wear those guides suffer.

One car is said to have shown worn valve guides in 27,000 miles while others have gone 120,000 miles plus and still operating fine.

If every car or even a majority of these cars have shown that valve guide wear is premature I'd say there may be a problem to address. However Porsche has built thousands of engines with the same guide material, most of which are doing fine.

If one owner drives and maintains his car in a fashion that allows 100,000 miles on the original valve train, are they entitled to a Porsche paid top end rebuild because some people say the material is wrong?

If another owner drives and maintains there car in a manner in which a top end rebuild is needed at 30,000 miles, why do they deserve the rebuild if the owner at 100K has the same material and managed to get 3 times the life from the exact same material?

[gamma]

I am having a hard time with Porsche being at fault here. If any manufacturer would fix a problem on a car with this mileage, and 5+ years out of warranty I would be suprised. But I am sure that if you make yourself a major pain in the a$$ that they might look at it. I woould go through a dealer that you do not intend to do business with again, as I doubt you will be on good terms at the end. Kevin

[WHITE 993]

Gentleman,

Thanks for the information but the real issue is an engineering error.

We all love Porshe's but lets not let that affect our ability to
see the facts through the carbon and oil.

Another 993 in the neighboorhood had the same issue at 30,000
miles. Is it the owners fault that he only drove 5 miles to work every day? Hundreds if not thousands of these cars are afflicted.

Gentleman, I have a 67 mini cooper with no valve guide problems as well as a 1992 chevy blazer with 300,000 miles on it.
No Valve guide problems.

My sons Honda S2000 will never have this problem.

My 993 is at one the best Porsche engine builders in Southern Calif. as we speak.

The tolerances on the exaust valve guides was a joke.

My engine is under re-assembly as we speak with corrected
valve guides and I am sure it will run trouble free
for well over an additional 100,000 miles as did my 85 Carrera 3.2. That was a bulletproof motor.

Porsche is as fault, no matter how much we love the marque.

Dealers are a waste of time.

Corporate is the correct angle of attack.

To be continued...

[flyenby]

may i ask who is doing the motor as i am in so calif also