Water Pump

[jmatta]

I have the 160 LN stat in my Box S, so I'm biased. This has been debated many times on this and other forums, but the bottom line is the car's coolant temp is reduced by some 20+ degrees, thereby reducing oil temps at the same time.

As for why Porsche didn't design this like the GT3s, turbos, etc?
I think the answer lies in that the typical use of a US Boxster driver is shorter trips as a daily driver vehicle. The higher temps help burn off containiments in the oil, at the cost of higher heat, oil breakdown and engine wear. JFP, Raby and Navarro have dissected these engines and know their faults and weaknesses...I trust their judgement in the "everyday" real world.

I want my engine to last a long time (I'm approaching 16k miles). I change my oil at least annually (3k miles) and use only high quality synthetic and OEM Porsche coolant.

If I were changing my water pump, it wouldn't be with some knock-off.

[Franco]

Hi, I replaced the crappy OEM pump with one bought on ebay, it has been 2 years since and haven't had any problems.

I paid about $125.00 shipped.

[Lil bastard]

I have to disagree with those urging oem replacement.

While I usually always go oem, the waterpump is simply inferior to several of the remans or aftermarket ones out there using a metal impeller instead of the oem plastic one.

Not only is coolant flow reduced and debris forced through the system (possibly clogging it) as the impeller degrades, but it also throws the shaft out of balance shortening the life of the bearing, seal, and the pump itself.

The pumps with metal impellers don't cost any more, in fact, they're usually less than oem.