What's new
Porsche 911 UK Enthusiasts Online Community Discussion Forum GB

Welcome to the @Porsche911UK website. Register a free account today to become a member! Sign up is quick and easy, then you can view, participate in topics and posts across the site that covers all things Porsche.

Already registered and looking to recovery your account, select 'login in' and then the 'forget your password' option.

Topgear.co.uk - Finance Available for Exhausts, Franchises, Alloy Wheels, Carbon Cleaning and Tuning

Water pump

P

peterzoom

Spa-Francorchamps
Joined
25 Jul 2016
Messages
281
Just thought I would share this experience with you all.
My 987 was making a bit of an unseemly racket and after a bit of close listening it turns out that the water pump was beginning to fail. I had it replaced and was amazed at the reduction in running temperature.
Previously, in traffic it would sit at about 90 with the fans running audibly. After the replacement pump a solid 80 is it's default reading on the gauge with much less fan action.
With this in mind it dawned on me that my 996 was sitting at about 85 to 90 in traffic recently, definitely a little higher now that I seemed to remember previously.
As the 996 was in for a service I asked for the pump to be replaced also. It wasn't noisy in any way but the records show the pump had covered 60k miles.
Wow! what a difference. Running in traffic and stuck for an age on the motorway, a solid 80 on the gauge just like the Boxster.
So I guess that the pumps efficiency can drop off markedly before the bearings begin to get noisy.
So, if you have any concerns about hot running I would definitely recommend changing the pump.
 
Have you got the old one for inspection? Is it a plastic impeller?
 
Definitely good practice to renew if there's no proof of a change at any time in history.

Mines getting done in a few weeks.
Also a main dealer one is £250. Cheap ones are £100. For the sake of £150 just buy the Porsche one, otherwise it's a schizophrenic approach to maintenance. Removing the old one for a cheap thing that may not last or that you'll have to swap out more regularly.

Mine looks original so if it's lasted 19 years and 75k I'm happy to replace with the same. :thumb:
 
the cheaper ones have metal impellers, vs original plastic.

the original can fail sending chunks of plastic through the cooling system

the cheaoer metal impellers can "machine" the block a bit when they go wonky


either way, probably good to treat as a very infrequent service item
 
Yes that's it Wasz. Pros and cons to either type.

If I fitted a cheapie I'd change it every 2 years. As I've fitted a genuine part I'll give it at least 5 years.

Some people say that the extra weight of the metal impeller wears bearings quicker etc and as you say, if they do go the blades chew the surrounding surfaces up meaning you can't get pressure again.

The plastic ones break up saving the block but the bits disappear in far corners of the head and are sometimes impossible to retrieve without a strip down.

Yet another loveable quirk of the M96 engine. :grin:
 
The pump that came out of the 996 had plastic blades and the 987 had metal ones.
I tend to agree that there are pros and cons with each type and as such they are better to be regarded as an item that is replaced before failure and given a lifespan commensurate with its construction.
I did notice when researching replacements that there are several options including o/e from ECP.
Looking ahead I am going to replace them after 50k miles in service and certainly if there is any drop off in heat rejection that isn't explained by any other culprit.
 
I fitted the plastic impeller pierburg pump from frazerpart which is v good and v cheap
 
Marky911 said:
Definitely good practice to renew if there's no proof of a change at any time in history.

Mines getting done in a few weeks.
Also a main dealer one is £250. Cheap ones are £100. For the sake of £150 just buy the Porsche one, otherwise it's a schizophrenic approach to maintenance. Removing the old one for a cheap thing that may not last or that you'll have to swap out more regularly.

Mine looks original so if it's lasted 19 years and 75k I'm happy to replace with the same. :thumb:
Click to expand...

Speaking from experience (bad), the non original parts are crap, so I wholehearted back up what you have written :thumb:
 
You must log in or register to reply here.

Similar threads

M
997 Water Temperature
Replies
3
Views
503
matt_proudfoot
M
Indischrot
Whilst you’re there jobs – Water pump and exhaust
Replies
9
Views
1K
Indischrot
Indischrot
J
COOLANT LEAK AND WATER PUMP REPLACEMENT
Replies
7
Views
2K
Wh1t3Kn1ght
W
P
991.2 new to me from OPC back in for water pump
Replies
3
Views
1K
Zingari
Zingari
Robbidoo
Absolute nightmare HELP NEEDED dashboard speaker replacement
Replies
13
Views
1K
Menace
Menace
E
Advice appreciated - negligent OPC?
Replies
13
Views
906
Mordibe
M
M
Engine cuts out - intermittent - 997.1 (2008) C4S manual cab
Replies
0
Views
383
martin1208j
M
Used Porsche for sale

Latest posts

New Threads

Porsche Model Range

Porsche 911

Porsche 992: 2018- Porsche 992: 2018- Porsche 991: 2011-2019 Porsche 991: 2011-2019 Porsche 997: 2004-2012 Porsche 997: 2004-2012 Porsche 996: 1997-2005 Porsche 996: 1997-2005 Porsche 993: 1993-1998 Porsche 993: 1993-1998 Porsche 964: 1989-1993 Porsche 964: 1989-1993 Porsche Carrera 3.2: 1983-1989 Porsche Carrera 3.2: 1983-1989 Porsche Carrera SC: 1977-1983 Porsche Carrera SC: 1977-1983 Porsche 930 Turbo: 1975-1989 Porsche 930 Turbo: 1975-1989 Porsche Early 911: 1964-1977 Porsche Early 911: 1964-1977

Porsche Hypercars

Porsche 918 Spyder Porsche 918 Spyder Porsche Carrera GT Porsche Carrera GT Porsche GT1 Porsche GT1 Porsche 959 Porsche 959

Other Current Porsche Model

Porsche Taycan : (2019-0%) Porsche Taycan : (2019-0%) Porsche Macan : 2013- Porsche Macan : 2013- Porsche Panamera : 2009- Porsche Panamera : 2009- Porsche Cayman: 2005- Porsche Cayman: 2005- Porsche Cayenne: 2003- Porsche Cayenne: 2003- Porsche Boxster: 1997- Porsche Boxster: 1997-

Porsche Legacy Models

Porsche 928 Porsche 928 Porsche 968 Porsche 968 Porsche 944 Porsche 944 Porsche 924 Porsche 924 Porsche 914 Porsche 914 Porsche 912 Porsche 912 Porsche 904 Porsche 904 Porsche 550 Porsche 550 Porsche 356 Speedster Porsche 356 Speedster Porsche 356 Porsche 356

Forum statistics

Threads
124,562
Messages
1,441,538
Members
48,977
Latest member
GT3161

porsche insurance porsche parts porsche sales porsche car sales porsche for sale
porsche classic sales porsche tuning porsche sold porsche specialist porsche engine rebuilds porsche driver training porsche car sales porsche exhausts

Community platform by XenForo® © 2010-2024 XenForo Ltd. XenForo theme by xenfocus

www.911uk.com @Porsche911UK THE DEFINITIVE PORSCHE FORUM Copyright © 911UK 2002-2024 All rights reserved.

911uk.com is not associated and is wholly independent of Porsche Automobil Holdings SE, Dr. Ing.h.c.F.Porsche AG, Porsche Cars GB, its subsidiaries and offical Porsche centres. Any word, phrase or graphic that in any way resembles anything to do with the Porsche name or organisation are registered trademarks of Porsche Automobil Holdings SE and Dr. Ing.h.c.F. Porsche AG.

Back
Top