Tmistry

Hi All,

I'm interested in the incidence of coolant pipe failure on our cars. Thought a poll makes sense. By design, I've kept it very broad, so trying to get as large an n as possible.

Tmistry

Bump for Sunday. Looking for a large response pool to see what the coolant failure rate really is on our cars. Please vote!

Skwerl

There was a pretty well-attended poll a few months ago started by Nate Tempest, specifically in regards to the "better glue in 09" legend. As I recall, something like half of 07/08s needed the fix and zero 09s.

JG 996T

Tmistry

Skwerl, I assume this means 1/2 of the cars that needed the fix, were 2007/2008? Not, 1/2 of 2007/2008 cars needed the fix.

I'd like to have a poll only looking at the total population of 997.1 cars, irrespective of years, and determine what percentage of the total 997.1 population actually needed the fix.

Skwerl

Here is the thread:

https://rennlist.com/forums/997-turb...ich-years.html

47% of responding 2007s failed
17% of 2008s failed
0% of 2009s

26% total but the supposed change in epoxy in late 2008 should be factored IMO, especially since most people with 997 Turbos have 2007s (sort of surprising so many 08s responded on that poll).

ShatterPoints

My car (2007) had coolant pipe issues on the turbo and the return lines in the front of the motor. Also the oil lines were not great. Had the lines repaired and pinned while the motor was out of the car. I bought the car with the leaks and it had 55k on the odo.

Tmistry

Thanks ShatterPoints. I would consider your actions to be addressing preventatively, depending on how bad things were. Tough to get a handle on this issue. The objective behind the poll is to determine if a catastrophic coolant dump is a reasonable fear of ownership.

Big Swole

Subscribed

ShatterPoints

I think a coolant dump would be a fear to have if you track the car often AND do not address the pipes re: their condition upon initial ownership. For my particular issue the coolant line on the turbo was the feed line and was so bad the dealership I bought the car from spent money to fix that issue. I would agree the rest of it was preventive, as the pipe leak on my return line was more of a seep and I was losing enough coolant to fall below the min line in the expansion tank over 1-2 weeks. At no point did coolant dump on me but it was a risk from the original leak non the less.

Tmistry

Good info to know. Thanks 🙏

MadScience

No failure yet on my '09 with close to 60k miles on it. I'll likely take preventative measures if/when the engine comes out for some other reason, but am not motivated to drop it just for that.

I don't track the car. I'd feel differently if I used the car in some way that kept the revs up consistently, but I don't.

nzskater

That's not really preventative; any leak be it a gradual seep vs an eventful coolant egress is still a failure of the coolant pipes/epoxy.

ShatterPoints

Splitting hairs at this point.

OP has a particular severity that is being applied on a per case basis it seems. I would agree with you that if there is a leak at all then it "counts" as an issue. Regardless of the situation, I'm confident that most if not all owners will agree that the OE coolant lines WILL leak at some point in their life. The average mileage on a vehicle as corroborated on the internet and local shops is 45-55k. That is though is just an avg some will go sooner and others not at all. No matter the car anyone buys there will always be something to worry about where by you choose to roll the dice or do preventive maintenance.

RajuPatel

I am experiencing this issue. see my thread at https://rennlist.com/forums/997-turb...eak-issue.html Have removed the engine at a PORSCHE workshop. I am changing all non metal parts etc. I am also pinning the TORQUE Solutions aluminium inserts. my car is run only 32k kms but had been lying around with he previous owner. I had it tuned after putting aftermarket turbos, BOV, waste gates etc. the coolant leakage has happened post the new power upgrade. not related though. while at it I am doing everything necessary, so that i do not need to bring down the engine again, at least fro the cooling system point of view...