Porsche Composite waterpump pulley failure
11-20-2018, 12:16 PM
#1
Racer
Thread Starter
Porsche Composite waterpump pulley failure
I just had the “guinuine Porsche” composite waterpump pulley fail. I had about 1500 miles on the new belt/waterpump/pulleys. I plan to use an aftermarket Aluminum pulley this time. What a “guinuine” JOKE.
Oh and and no I did not over tighten the 3 bolts. Most of the failure is at the outer area just inside the belt tracking portion.
Oh and and no I did not over tighten the 3 bolts. Most of the failure is at the outer area just inside the belt tracking portion.
11-20-2018, 02:27 PM
#2
You don't become the most profitable car company in world by making quality products. 
11-21-2018, 01:41 AM
#3
Drifting
That pulley needs to be replaced every time the water pump and serpentine belt is done... otherwise, the pulley "grows teeth" and will gnarl-up the serp in no time flat.
A heavy metal pulley is NOT the answer...
A heavy metal pulley is NOT the answer...
11-21-2018, 07:40 AM
#4
Racer
Thread Starter
The pully was replaced...a whopping 1500 miles ago. Worked wonderful until it shttered like a clay pigeon. Probably designed by the same wizard that put plastic coolant pipes on the car. You sticking with the plastic coolant pipes?
11-21-2018, 11:19 AM
#5
This is not an isolated case. We have seen others who have thrown/shredded belts from the water pump pulley fragging. When I recently removed my water pump pulley to replace all the parts on the front of the engine, the old pulley was quite brittle and went kind of like this:
11-21-2018, 11:50 AM
#6
Racer
Thread Starter
This is not an isolated case. We have seen others who have thrown/shredded belts from the water pump pulley fragging. When I recently removed my water pump pulley to replace all the parts on the front of the engine, the old pulley was quite brittle and went kind of like this:
https://www.youtube.com/watch?v=HqZWsJ2oO_E
https://www.youtube.com/watch?v=HqZWsJ2oO_E
11-21-2018, 12:01 PM
#7
The aluminum pulley is actually cheaper than the plastic one. Seems like a no brainier to me. I wonder if Porsche will refund your money on the OEM one that failed?
https://www.ecstuning.com/b-hamburg-...810609001~ham/
https://www.ecstuning.com/b-hamburg-...810609001~ham/
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11-21-2018, 12:52 PM
#9
The aluminum pulley is actually cheaper than the plastic one. Seems like a no brainier to me. I wonder if Porsche will refund your money on the OEM one that failed?
https://www.ecstuning.com/b-hamburg-...810609001~ham/
https://www.ecstuning.com/b-hamburg-...810609001~ham/
11-21-2018, 01:59 PM
#10
Burning Brakes
This is not an isolated case. We have seen others who have thrown/shredded belts from the water pump pulley fragging. When I recently removed my water pump pulley to replace all the parts on the front of the engine, the old pulley was quite brittle and went kind of like this:
https://www.youtube.com/watch?v=HqZWsJ2oO_E
https://www.youtube.com/watch?v=HqZWsJ2oO_E
Lots of interesting info in this thread. I too have sworn off Hamburg Technic (100% pure Chinese, in case you are thrown off by the name they chose, which should be a clue as to their honesty). But something like an Aluminum pulley - really not much to go wrong there. But I still would stay away from them.
11-21-2018, 03:10 PM
#11
So do I, but it's a simple pulley made out of aluminum. What could really go wrong? As for longevity, I would put my money on that aluminum pulley over the OEM plastic one every time. Sometimes for simple things like this, choice of materials is more important than a brand name.
11-21-2018, 03:17 PM
#12
Hilarious. "one of a kind piece ... no other one like it in the world ..." Yep, I saw that one coming a mile away. And the host's reaction is pure savage.
Lots of interesting info in this thread. I too have sworn off Hamburg Technic (100% pure Chinese, in case you are thrown off by the name they chose, which should be a clue as to their honesty). But something like an Aluminum pulley - really not much to go wrong there. But I still would stay away from them.
Lots of interesting info in this thread. I too have sworn off Hamburg Technic (100% pure Chinese, in case you are thrown off by the name they chose, which should be a clue as to their honesty). But something like an Aluminum pulley - really not much to go wrong there. But I still would stay away from them.
If knew there was a chinese aluminum pulley, I probably would have tried it. I will take a minor balance issue over having a cheap plastic pulley grenade every time. I have balanced enough props from 5cm to 140cm that I am pretty sure I could get check it quickly and get it dialed in if it arrived poorly made.
11-21-2018, 03:19 PM
#13
11-21-2018, 03:26 PM
#14
My car is already on it's third OE plastic water pump pulley and the car hasn't even hit 80k miles. How much worse can it get?
If I would of known there was a metal water pump pulley available, I definitely would of went that route.
11-23-2018, 06:57 PM
#15
This is crazy. I am still on my original which I assume is @ least 8 years old with @ least 115k miles. It even had a chip out of one of the edges and in the middle bore hole. I just radiused them off to get rid of stress risers and have not had any issue. Maybe the plastic formula changed once the Cayenne was an established seller for Porsche.