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Catastrophic Coolant Hose Coupling Failure Registry

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Old 09-28-2010, 07:06 PM
  #31
Carrera GT
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Originally Posted by RadioActiveMotorsports View Post
Rennlisters, during my race at Miller Motorsport Park I had a coolant line failure that should not have occured. My 2004 GT3 has a secondary coolant line from the waterpump next to the primary coolant line. This secondary line has a press fitting into the waterpump with no fastner. It then travels up to the powersteering pump where it is connected. Both pumps have the pressed fitting with metal pipe, both pipes are joined with a rubber hose using hose clamps, I would image for vibration. It appears to have been bonded with adhesive, and after 7500 miles it failed, just popped out during a race which cost me my National Championship and possibly a engine. No warning, no drips or leaks, just pop and a spray of coolant on to the engine and right rear suspension.

Would like to hear if others have had the same problem, because trust me, I will give Porsche and ear full...

Look and weep...
That's a horrible looking design. Is that short flexible section with the hose clamps done after-market? Factory hose clamps are usually the crimp type.
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Old 09-30-2010, 11:01 PM
  #32
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Add me to the list:

2007
997 GT3
46,xxx miles Daily driver and DE car, but its been over a year since its been to the track
Dumped all the coolant on the way home from work driving at 30 mph
Car at dealer now, will add details when I know them.
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Old 09-30-2010, 11:40 PM
  #33
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non rennlister
today
infineon
997GT3
about 15-16k miles
T11 i believe.
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Old 10-02-2010, 02:43 AM
  #34
floridaPorsche
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Year: 2007
Model: 997TT
Mileage: 18k
Circumstance: Palm Beach International Raceway, 3rd lap coolant line seperated fr block ect...day over. Engine pulled and repaired.

Ken
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Old 01-24-2011, 12:47 PM
  #35
himself
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Year: 2004
Model: 996 GT3
Mileage 35,000 miles [2011]
Issue: Press fit coupling at water pump. All coolant drops in about 5 seconds!
Solution: TBD [going to shop today]

Pics below.
















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Old 01-24-2011, 01:00 PM
  #36
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^ add me as a victim of the above fail too!

2007 GT3RS
Turn 8 at WGI
Car had ~ 35k mils then.
Press fit coupling came unglued. Total coolant loss in less than a minute.
Repaired with OEM parts.
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Old 01-24-2011, 01:10 PM
  #37
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I'm surprised there has not been a class action lawsuit undertaken. Porsche is well aware of this problem (Excellence Magazine) and has done nothing to rectify the problem. costs for repair excedd $3500.
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Old 01-24-2011, 01:12 PM
  #38
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Originally Posted by BobbyC View Post
^ add me as a victim of the above fail too!

2007 GT3RS
Turn 8 at WGI
Car had ~ 35k mils then.
Press fit coupling came unglued. Total coolant loss in less than a minute.
Repaired with OEM parts.
If you could pick one turn at the Glen for this to happen it would be 8. I'd consider myself lucky. Must've made for some interesting powerslides for those following...
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Old 01-24-2011, 01:21 PM
  #39
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Any 2010-11's with this issue?
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Old 01-24-2011, 01:53 PM
  #40
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Originally Posted by Nizer View Post
If you could pick one turn at the Glen for this to happen it would be 8. I'd consider myself lucky. Must've made for some interesting powerslides for those following...
Fortunately the flaggers were quick to see stuff spraying out the rear and black flagged me. Immediately went off line and came into the pits...and SPLAT! Did she dump all the coolant right there...

Again, fortunately, there were no casualties behind me.
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Old 01-24-2011, 01:56 PM
  #41
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Originally Posted by rlightfine View Post
I'm surprised there has not been a class action lawsuit undertaken. Porsche is well aware of this problem (Excellence Magazine) and has done nothing to rectify the problem. costs for repair excedd $3500.
Porsche is infamously slow to even acknowledge any problem or product defect, but now it's become a matter of statistics. Porsche (NA and AG) appear to be willfully ignoring their liability and they don't seem to see the reaming that Toyota and others have taken for neglecting to recall defective products.

If/when someone dies, even VW won't have the liability insurance to write the check to compensate the families of a couple of wealthy GT3 RS owners in pine boxes.
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Old 01-24-2011, 03:08 PM
  #42
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Other than changing all the Hoses - anything else that can be done to the couplings to prevent the failure? TB weld? Sorry for the dumb question but just trying to be proactive!.
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Old 01-24-2011, 03:17 PM
  #43
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Ritesh it is not a hose issue but a press fitting issue. Do a search here we have more information than Porsche would like us to.. : )

And yes welding them is a final solution.
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Old 01-24-2011, 04:34 PM
  #44
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Any 2010-11's with this issue?
I don't think so. It seems to take some mileage 20K+ for this to happen, but the '10's ahve the same design I think.
I put water wetter in my car, so we are less lekely to spin when it happens.
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Old 01-24-2011, 04:52 PM
  #45
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And get your check book out, the engine has to be removed and porsche charges $3500 just to drop it! I had the fittings replaced by porsche only to have the failure occur a second time at the track. Their liability is growing!
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