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This is where I ended the day - Water Pump installed dry and all bolts coated with anti-seize and torqued to 10nm. Also replaced the cam plugs, re-installed the rear cover and lower idler - only casualty of the day was a lost cap head bolt in that awkward spot for the driver's side rear cover. It's taken a lot longer than I thought it would, but I can definitely see the finish line from here.
while the coolant system is apart , did you replace the thermostat and its most important rear seal?
No I didn't I thought I would do this as part of the upcoming intake refresh. I haven't yet decided what I'm going to do with regard to painting or powder coating various intake parts.
Assuming this happens within the next couple of months Is there any advantage to doing it now instead of then?
When that damn seal pops off and inevitably falls down the coolant passage towards the pump, it would be easier to retrieve it :-) Alternatively, you can stuff a sock into that passage before prying off the seal, but i wasn't that smart.
Decide if your intake refresh is going to include the water bridge, and let that guide when you'll go after the thermostat and seals. I'm of the opinion that the water bridge can stay in place, as finishing/painting/coating the pretty pressure-cast part doesn't buy you anything. So doing the thermostat now would make sense. Plus access to the bottom thermostat housing bolt is a lot easier with the front of the engine so open now.
The seal has a metal ring encased in the rubber. I at first thought I had no seal, because all the rubber was gone...but that will definitely cause the car to run hot.
Thermostat, o-ring and rear seal all replaced and today was supposed to be button up day, but when I went to start re-assembling the tensioner I see that the idler boss on the water pump is too small for the roller. Is this the wrong pump or is there a bushing that I'm missing?
Kevin,
Correct pump and if you remember we did not supply the idler pulley because at the time it was not available. Porsche superseded the part number and raised the price to $164 and it is still not yet available today. I recommended that you remove the original bearing and check it for wear and possibly reuse. Worst case I gave you the bearing numbers to just change out the bearing.
Best,
Roger
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
03-16-2015, 02:03 AM
George Layton March 2014