John, That is seemingly a body of evidence against a cooling system problem. But... FWIW here is my observation based theory on WBX water pump failure. It helps if you are looking at the insides of one to fully grasp this. The efficiency (for lack of a better word) of the pump is dependent on the clearance between the edge of the impeller and the body of the pump. Compare a new and bad pump and you will realize what I mean. That gap widens and you are going to lose head pressure, which I think is especially important in this setup. It's conceivable that it wears rapidly when new and slows down as the gap widens. I am also working on an oil cooler setup. There are some pictures at the bottom here: http://neksiwel.20m.com/photo_1.html Click to enlarge. Have yet to plumb it in to the engine. Got to get a round tuit. -- Ken Lewis http://neksiwel.20m.com/ |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.