[DaveN]

Good ideas but somewhat painfull $ wise as I already have a brand new radiator, belts and hoses and, well it used to be, a brand new water pump. [img]style_emoticons/<#EMO_DIR#>/dry.gif[/img] Probably no more than 8000K (5K miles) on all of it.

Bandit - yea I was lucky it was withing driving distance to my house and not the PCA drive that coming weekend 120Km from my house.

Still belabouring over new OEM or reman after my prevous LASO 944 experience.

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[flash]

ah - then you can reuse that stuff if, in addition to having only 5k on them, they are only about a year old or less

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[DaveN]

Winding up the thread.
My mechanic and I (very little I) replaced my waterpump last weekend. Man that's an ugly job. Removed the waterpump which turned out to be the original with a black plactic impeller spun on the shaft. Replaced it with on that had a metal impeller, what was Porsche thinking? Oh, yea, a reliable source of work for their dealers [img]style_emoticons/<#EMO_DIR#>/dry.gif[/img]
Runs a little hotter than it used to (not 8:00 but 8:30) probably due to the non-OEM temp switch I installed, it says 92/102 but I doubt it.

Be aware if you do this yourself and you have a lightened flywheel. We could find no marks on the front pully assy so he removed the starter/flywheel cowling and could find no marks on the RS flywheel I have. Could be the mechanic who installed the flywheel paid no attention to the placement of the flywheel and the mark is there somewhere in the wrong position? It's marked now for the future headgasket/SC stuff.

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[banditsc]

They actually had the right idea at first with plastic. Lasso one of the bigger water pump rebuilders just moved back to plastic from metal on there rebuilds. A second failure mode on the rebuild pumps for the 928's started popping up, the shaft in the pump was slipping forward causing the metal impeller to grind a hole into the block. Going back to plastic at least fixed the concern of your block getting chewed up. Someone else also invented some ingenious modification to the pump that allows the timing belt pully to keep spinning should your water pump lockup, which keeps your timing belt from snapping.

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[DaveN]

Addendum to my last post. Went for a bit of a highway drive and the needle sits at about 9:15 all the time. Not sure I like that as I am so used to the neddle never moving off the first line - 8:00. I want it to run cooler with the SC so I will have to change the thermostat/temp switch when I do the head gasket to something with lower temp ratings.
Off to the forum search as I'm sure lots (Flash) of people have done it.

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[flash]

part number is 951.606.481.00.85.M2

pelican has it for $12.50

try bleeding the system again:

front end of car higher than rear

engine fully warmed up

radiator cap on

fan on

heat set to high

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[DaveN]

Tks Flash, I beat you to the Pelican site but thanks anyway!
I have blead the system properly (as indicated above) twice and still no go. I read about a seal that is supposed to be inside the water pump. Checked on PET and sure enough item #2 is a seal and I don't remember seeing this on the new pump. The article says you car will run hotter than normal if this is missing or worn out. I remember seeing this in my 944 pump but not in the 968 pump.
I may have to live with the temp until I do my head/gasket in the winter.

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[banditsc]

If your talking about the rubber seal behind the thermostat, you can install/change that by just taking out the thermostat, which is easier said then done sometimes.

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[DaveN]

Yea, I already talked to my friend/P-mech. He doesn't remember that seal being there in retrospect either. He has a cute little tool for changing the thermostat on these water pumps with relative ease so we will do that during the winter SC prep.

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[flash]

please show us that tool! no rude joke intended - seriously, this would be one to have

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[DaveN]

It's a neat circlip tool for pulling and placing the ring you can't see. It has the circlip end but the arms are 90 degrees and attached to a machinists thumb screw caliper to open and close the arms. Yea, it's had to describe but very recognizable if you see it.

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