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v6matt
Newbie


Joined: 10 Oct 2018
Posts: 43



PostPosted: Sun Oct 14, 2018 4:48 pm    Post subject: 997 Water Pump/Thermostat Question Reply with quote

A new 997 owner here,

My water pump has some slight play in it, so I want to get it changed before it siezes on me.

1) It seems the original manufacturer of this is Pierburg, do people use other pumps from other well known manufacturers? Like SKF or Meyle e.t.c. It feels like they have put a Porsche tax on this as they are the OEM, is it genuinely better or do people use other brands?

2) Is the 'oem' pump from ECP actually a Pierburg or just another OEM manufacturer (they are certainly charging pierburg type pricing)

3) Does the coolant need to be replaced in full. Either way, what replacement/top up coolant is recommended

4) It seems that a low temp thermostat is recommended ? Which one?

Thanks
 
  
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NLW73
Barcelona


Joined: 27 May 2014
Posts: 1276
Location: Yateley


PostPosted: Sun Oct 14, 2018 7:30 pm    Post subject: Reply with quote

My water pump just went the other day. Pulled up at home and was buzzing n grinding away.

The oem pumps have plastic impellers and they just give up

The replacement one has metal blades and car running well now. It was from ecp but Porsche so sth £150

Coolant was drained and then replaced

Check the belt as well as the other pulleys. The idle tensioner has a habit of going
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997 C2s Schwarz
 
  
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v6matt
Newbie


Joined: 10 Oct 2018
Posts: 43



PostPosted: Sun Oct 14, 2018 7:52 pm    Post subject: Reply with quote

NLW73 wrote:
My water pump just went the other day. Pulled up at home and was buzzing n grinding away.

The oem pumps have plastic impellers and they just give up

The replacement one has metal blades and car running well now. It was from ecp but Porsche so sth £150

Coolant was drained and then replaced

Check the belt as well as the other pulleys. The idle tensioner has a habit of going


Thanks but also part of my source of confusion!

Was your ECP part Porsche branded/boxed? If so, I thought that was a Pierburg and ceramic.

Seemingly the Pierburg (OEM) parts use a ceramic blade, and the other OEM brands like Graf/Febi e.t.c use brass i.e metal.

Contrary to my understanding from owning italian cars, some folk were saying that the metal one is a bad idea because when if it develops play it can then start to eat into the housing.

Hence a new level of confusion/thought on a simple water pump !

I want to put quality into this car, and if Pierburg is class leading quality/clearly above over known OEM, then happy to pay for it but little is clear :/
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easternjets
Kyalami


Joined: 29 Apr 2016
Posts: 1762
Location: Darlington


PostPosted: Mon Oct 15, 2018 1:39 pm    Post subject: Reply with quote

Hi v6matt, I do think your getting yourself into a bit of a 'tizz' about this pump situation and over thinking the problem.
As I mentioned on the other thread I changed my pump and the one I replaced it with was identical and it was a Pierburg bought from Autodoc. Same manufacturers marks/stamps/colour/material everything.
The impeller on both pumps was made from resin, not metal. It's not the impeller that goes it's the bearing, so the impeller material is irrelevant as that's not the weak point. They normally start with a steady drip and then eventually pack up and seize.
When you get the pump off you will be surprised how simple it is, it is literally a small impeller on a shaft which goes into the water pump opening in the block, several bolts and a gasket and that's it, really is simple. The hard part is getting the ruddy thing out!
As I also mentioned buying from OPC will incur a hefty wedge of Porsche tax, I saved £300 going to Autodoc for the Pierburg pump, which by the way I didn't specify this make it's just what came, it was only when I removed it that it all became apparent.
Rest assured that unless your keeping the car into the next decade change it and it won't bother you again. They seem to last for about 10 years.
Radiators originals are Behr/Hella as are replacements
Coil packs are Beru as are replacements.
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997 Turbo Gen 2
997 Turbo Tiptronic S
Porsche 968 Coupe 1992
Porsche 928 S4
Porsche 911 3.2 Carrera 1985
 
  
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v6matt
Newbie


Joined: 10 Oct 2018
Posts: 43



PostPosted: Tue Oct 16, 2018 4:30 pm    Post subject: Reply with quote

easternjets wrote:
Hi v6matt, I do think your getting yourself into a bit of a 'tizz' about this pump situation and over thinking the problem.
As I mentioned on the other thread I changed my pump and the one I replaced it with was identical and it was a Pierburg bought from Autodoc. Same manufacturers marks/stamps/colour/material everything.
The impeller on both pumps was made from resin, not metal. It's not the impeller that goes it's the bearing, so the impeller material is irrelevant as that's not the weak point. They normally start with a steady drip and then eventually pack up and seize.
When you get the pump off you will be surprised how simple it is, it is literally a small impeller on a shaft which goes into the water pump opening in the block, several bolts and a gasket and that's it, really is simple. The hard part is getting the ruddy thing out!
As I also mentioned buying from OPC will incur a hefty wedge of Porsche tax, I saved £300 going to Autodoc for the Pierburg pump, which by the way I didn't specify this make it's just what came, it was only when I removed it that it all became apparent.
Rest assured that unless your keeping the car into the next decade change it and it won't bother you again. They seem to last for about 10 years.
Radiators originals are Behr/Hella as are replacements
Coil packs are Beru as are replacements.


Indeed, going to give up trying to work out the differences and have just ordered the Pierburg.

I got in touch with ECP about their OEM part, but that is a Geba and not Pierburg as some have stated.

A new low temp thermo is also on the way, along with 6 fresh Beru coil packs. Lovely job.
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easternjets
Kyalami


Joined: 29 Apr 2016
Posts: 1762
Location: Darlington


PostPosted: Tue Oct 16, 2018 8:04 pm    Post subject: Reply with quote

Just to give you another sleepless night, kidding, check around the inside of your front bumper shroud. Check to see if you can see, with a torch, how much crud is rammed in the side inlets where the condensors are for the aircon.
I found so much stuff in there I took the bumper shroud off and cleaned it all out, the rubbish that came out was incredible.
You can then make grills or buy Zunsport grills to keep the stuff out. If your making grills get a few disposable barbies, remove the mesh on the top, cut to shape and tie wrap them on the inside of the shroud before replacing.
Shroud looks a big job to do but is actually pretty straight forward, there's a step by step guide on a few web sites, takes about an hour off and back on.
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997 Turbo Gen 2
997 Turbo Tiptronic S
Porsche 968 Coupe 1992
Porsche 928 S4
Porsche 911 3.2 Carrera 1985
 
  
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Poker2009
Imola


Joined: 09 Sep 2009
Posts: 867
Location: London


PostPosted: Wed Oct 17, 2018 5:38 am    Post subject: Reply with quote

+1 for Pierburg from Autodoc as mentioned above.

A metal impeller is the one NOT to go for.
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maldren
Österreich


Joined: 07 Oct 2016
Posts: 923



PostPosted: Wed Oct 17, 2018 7:56 am    Post subject: Reply with quote

easternjets wrote:
Just to give you another sleepless night, kidding, check around the inside of your front bumper shroud. Check to see if you can see, with a torch, how much crud is rammed in the side inlets where the condensors are for the aircon.
I found so much stuff in there I took the bumper shroud off and cleaned it all out, the rubbish that came out was incredible.
You can then make grills or buy Zunsport grills to keep the stuff out. If your making grills get a few disposable barbies, remove the mesh on the top, cut to shape and tie wrap them on the inside of the shroud before replacing.
Shroud looks a big job to do but is actually pretty straight forward, there's a step by step guide on a few web sites, takes about an hour off and back on.


+1 on make your own if you're a DIY type, you can make them much more unobtrusive than the £200 Zunsport ones using mesh off ebay. I used black aluminium mesh because it's easy to cut and bend to shape and should last a long time.
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Mike
2003 996.2 C2 Coupe Arctic Silver
 
  
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