scott40

Are there known failures on non turbo or GT2/3 based GT1 engines? Are base Carreras, Carrera S cars having this issue?

FFaust

Scott, this affliction affects only the GT1-based engines. These engines are not used in the Carrera & S, so the answer to your question is no. This only applies to the Turbos, GT2's and GT3's.

dk996gt2

Year: 2002
Model: GT2
Mileage: 55000
Circumstances surrounding failure: small coolant leak, found loose connection during investigation
Specific Coupling: bonded J-fitting
Repair Solution: TIG-welded pipe

scott40

Didn't realize that. I wonder what is different about the GT1 fittings compared those used in the Carrera.

FFaust

GT1-based, commonly-called Mezger, engine has it's roots in the air cooled 964 race engine. It was then 'modified' into a water-cooled engine, and water-cooled cylinder blocks were added. Coolant manifolds are 'external' to the engine, and plumbed differently. It is called a hybrid because it uses both oil and coolant for cooling.

The M96/M97 engine, used in the regular Carrera, was designed as a water-cooled engine from the start, and uses different plumbing and cooling components. It's just different, and doesn't use these bonded couplings.

Now, not to introduce some doubt, but guys, feel free to correct me if I messed up the explanation

blake

+1 - well said. And this is why many of us are frustrated, especially those with new GT3s under warranty.

scott40

Yes this is frustrating and not good for Porsche's business with this segment of their line up. I know turbos and GT cars aren't their biggest sellers, so perhaps it's not a big concern.

ChrisF

Since most of the failures seem to be on track, there is an easy out for them to ignore the problem. If this was happening on the street with any regularity, my guess is we would see action. Are there any documented failures that happened in the course of spirited street or normal driving? Regardless, I think they either need to issue a TSB recommending a factory approved solution or just recall and fix the damn problem.

HiWind

Chris, posts 137 & 143 are two examples from just one page.

Carrera GT

A product defect which can kill people = big concern.

Carrera GT

Unless the coolant fittings only fail after the car has been hurled from a catapult as a ballistic weapon in an anachronistic war between medieval tribes caught in a time vortex reaching into the 21st century ... then Porsche has no mitigating circumstances to argue this is somehow the driver's fault.

SH || NC

I think the Cayenne is their biggest seller - search on 'coolant pipes' for that model.

jcb-memphis

For those wishing to have your tax money work for you (if in the US, if you are out of the US and wish to just send in data, probably ok too):

http://www.nhtsa.gov/Contact


Jeff

begirl001

Few years old but add me to this registry

old gray wolf

2004 GT3. First time at Watkins Glen in '08. 37K. J pipe behind power steering pump. Replaced housing w/ the bad pipe under warranty. Second time at Mid Ohio in '11. Same pipe blew out. Removed all of Porsche's sealant and reinstalled pipe using J B Weld epoxy which has a 1000 psi shear strength and is good to 300F, then safety wired the hose clamp to a bolt.
Will pin all pipes prior to next event.