Cambelt Change

[R99AN H]

So what year was the upgraded water pumps released and once an upgraded OEM pump
has been fitted does it still need changing when the belt and tensioner is done?

Generally for peace of mind you might as well change it if your doing the belt.... Saves doing it all over again if you get a leaky/noisy pump etc

 

[Cupra Ross]

I used to fit nothing but metal impeller pumps then we had one fail resulting an unreparable block and swarf all through the cooling system.

Genuine pumps carry a 2 year warranty that also covers any subsequent engine damage caused by a faulty pump, most aftermarket pumps only warrant the part itself.

The plastic polymer material used in modern VAG water pumps is far superior to the older type so you never see the same issue like in the past.

So really if you want to fit the "best" and most supported/backed up part and protect your customers or personal best interests then genuine is the answer.

KWP, Graf and Circoli cover damage caused by failure of the part under their warranty. I only ever use KWP and circoli. I'm not doubting your integrity but it is almost impossible to believe that a failed metal pump could cause so much damage. For one, there is no room in the coolant galleries for large pieces of metal to exit the water pump housing, secondly, they generally fail on the shaft seal resulting in a coolant leak or the impeller comes adrift from the shaft, not traumatic type failures and even if that was the case, the brass impeller is not going to break into tiny pieces, its far less brittle than plastic.

After thousands of plastic pump failures resulting in countless head gasket failures and cracked cylinder heads, I'm more than comfortable to continue fitting KWP, Circoli or Graf metal pumps, of which I've never seen one single failure.

 

[MJ]

KWP, Graf and Circoli cover damage caused by failure of the part under their warranty. I only ever use KWP and circoli. I'm not doubting your integrity but it is almost impossible to believe that a failed metal pump could cause so much damage. For one, there is no room in the coolant galleries for large pieces of metal to exit the water pump housing, secondly, they generally fail on the shaft seal resulting in a coolant leak or the impeller comes adrift from the shaft, not traumatic type failures and even if that was the case, the brass impeller is not going to break into tiny pieces, its far less brittle than plastic.

After thousands of plastic pump failures resulting in countless head gasket failures and cracked cylinder heads, I'm more than comfortable to continue fitting KWP, Circoli or Graf metal pumps, of which I've never seen one single failure.

Theres more than enough room in the coolant system for particles to circulate, most had jammed against the stat, some had passed through. The block was gouged and we chose not to chance it.

The pump impellar had began to work its way off the shaft and acted like a lathe into the block, i did a write up about it which was featured in Performance VW and the TPS monthly news letter.

It was a C****** pump that failed, it had a cast impeller not brass, the warranty wasnt worth a w4nk when it came to sorting out the bill for the failed product, Andrew Page supplied new parts but the manufacturer were no help at all.

If you read the panflet that comes in a KWP water pump box you'll see that should the pump fail they require the return of the pump before they'll authorise a replacement and there is no mention of any other costs being covered in the event of failure.

The highlighted bit at the bottom was exactly what i believed about metal impeller pumps until i saw this one fail.

Now we fit genuine only, if they fail the car goes to the dealer and VW UK picks up the bill and sorts out the mess.

 

[Nam-uk]

lol i read that MJ nice read


this is worth watching as well

http://www.blauparts.com/vw_water_pump_replacement/vw_water_pump_plastic_impeller_controversy.html

 

[MJ]

lol i read that MJ nice read


this is worth watching as well

http://www.blauparts.com/vw_water_pump_replacement/vw_water_pump_plastic_impeller_controversy.html

What a great link!

 

[Nam-uk]

What a great link!

when it loads lol the truth is out there

 

[Cupra Ross]

Theres more than enough room in the coolant system for particles to circulate, most had jammed against the stat, some had passed through. The block was gouged and we chose not to chance it.

The pump impellar had began to work its way off the shaft and acted like a lathe into the block, i did a write up about it which was featured in Performance VW and the TPS monthly news letter.

It was a C****** pump that failed, it had a cast impeller not brass, the warranty wasnt worth a w4nk when it came to sorting out the bill for the failed product, Andrew Page supplied new parts but the manufacturer were no help at all.

If you read the panflet that comes in a KWP water pump box you'll see that should the pump fail they require the return of the pump before they'll authorise a replacement and there is no mention of any other costs being covered in the event of failure.

The highlighted bit at the bottom was exactly what i believed about metal impeller pumps until i saw this one fail.

Now we fit genuine only, if they fail the car goes to the dealer and VW UK picks up the bill and sorts out the mess.

Fair points there MJ, although KWP do have a pump replacement and a damages claim section on their pump failure warranty claim form. Just in case a customer comes in to you with the first ever catastrophic failure of a KWP brass impeller pump on a 1.8T here's the link: http://www.kwp.it/public/Modulo_resi_2012_en.pdf

lol i read that MJ nice read


this is worth watching as well

http://www.blauparts.com/vw_water_pump_replacement/vw_water_pump_plastic_impeller_controversy.html

Thanks for the link, its good to know that these pumps have actually changed and its not just manufacturer bs. However, the "conscious decision" to use PPS is because its cheaper than brass, nothing else, and a brass impeller is still king IMO. The use of the word "efficiency" speaks volumes

 

[Dave_Cupra88]

My cambelt was done in December 2009 at 33000 miles. It's now 2013 and the car has covered 64000, so I guess it needs doing again. The tensioner and water pump were done at the same time in 2009, should these be replaced this time as well?

 

[Nam-uk]

My cambelt was done in December 2009 at 33000 miles. It's now 2013 and the car has covered 64000, so I guess it needs doing again. The tensioner and water pump were done at the same time in 2009, should these be replaced this time as well?

yes