Strange S4 cooling problem - New Pump Failure
04-16-2009, 12:03 PM
#61
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Busy making PKensioners I hope 8>)
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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."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
04-16-2009, 12:31 PM
#62
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For me, and Ive had my share of failures of new rebuild pumps, I feel if you have thing that is working, you stick with it. when I have changed to a newer one, ive had a 50% chance of problems. recently, after the holbert car had the impeller spin off the shaft, I replaced the pump and its been good for the last 4 years. (multiple timing belt changes and its on the stroker engine now as well)
there is no reason why losening the timing belt will wear a bearing, just because the force is removed and then reapplied. I think the design is bad enough that when you find a good one, you stick with it. IMHO
m
there is no reason why losening the timing belt will wear a bearing, just because the force is removed and then reapplied. I think the design is bad enough that when you find a good one, you stick with it. IMHO
m
yes I read the thread.... I've had my 928 since 1997. I'm on my 3rd block due to stroker projects. I've installed no less than 10 timing belts..... due to tearing down the long block for one reason or another. Old school mechanics taught me that EVERY time you loosened the tenstion on a timing belt you replace the belt and the waterpump.... and EVERY time I have removed a timing belt for one reason or another I have replaced the waterpump. EVERY TIME... and one of the waterpumps was a new from the dealer waterpump with less then 3K on it... and I replaced it. In addition, to my car I have done timing belts on no less than 6 other cars.... and every time I refused to touch the car unless I replaced the waterpump. I was part owner in a shop where a customer gave concent ( with signature on the invoice) to replace the waterpump (knowing the cost) and after we tore it down, he refused to pay for a new waterpump. We refused to complete the job as he changed his consent mid repair. The other owner of the shop was the old school mechanic who refused to do a timing belt on a 928 without replacing every roller and taking the cam covers off and checking the cam timing with a dial indicator on the lifters. He has since retired but I carry with me to this day, his standards of repair and maintenence.....
OH, and the last waterpump I installed on my own 928 was a new Lasso from 928srus...... if its good enough for my one of a kind stroker variocam 928... its good enough for any stock 928. Period.
OH, and the last waterpump I installed on my own 928 was a new Lasso from 928srus...... if its good enough for my one of a kind stroker variocam 928... its good enough for any stock 928. Period.
04-16-2009, 12:37 PM
#63
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Harvey, I don't mean to burst your bubble, but if the Porsche pump you have was sourced through PCNA then it was most likely rebuilt by the same folks that rebuild the pumps for our vendors here.
04-16-2009, 03:03 PM
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Hmmm... maybe. But, to me it seems to have too few letters and is too monosyllabic to be a real German company. If it was, wouldn't the name be something like Bundeswasserpumpinmaschinenfabrikn A.G.?
Where's Nicole when I need her?
Where's Nicole when I need her?
04-16-2009, 07:21 PM
#69
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I think Sunset gets orders about weekly from Germany so I wasn't surprised...but I don't read German. I wish I still had the box and paperwork.
Harvey
04-16-2009, 07:25 PM
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I didn't see anything w/Laso on the papers with my pump. I can't prove it came from Germany direct but that's what I'm going to believe until proven otherwise.
It does worry me though...Worf isn't wrong very often. The next time anyone talks with Sunset, why don't you ask them if they have a Germany source? I haven't purchased anything from them for probably 3 years or so.
Harvey
04-16-2009, 07:27 PM
#71
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scots looked like that when his water pump let go. we put the new one on there and its been fine. I know it hurts the effeciency of the flow somewhat. how much is anyones guess. but Scots does run fine. Putting JB weld in there or something, seems kind of dangerous over time that could break off and cause other problems.
mk
mk
04-16-2009, 07:30 PM
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04-16-2009, 07:40 PM
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the output of the water pump is directly to both sides of the engine, regardless if the source is the engine top end or lower radiator hose water source. anthing flying off the water pump impeller, or related area, will end up in the block and probalby heads too, eventually reaching the radiator if it is smaller than the holes in the heads.
mk
mk
04-16-2009, 07:53 PM
#75
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I've installed a lot of pumps and had wp and belt failure more than once ... for me, I'll not be running LASO pumps till you all have put some miles and field-tested them for me I personally have had failures only on LASO's .. of course that was before our friend Roger did his magic. I will say one thing in agreement with Worf about Roger: if Roger truly believes the new Lasos are good ... then I'm thinking they are good.
I personally have had failures only on LASO's .. of course that was before our friend Roger did his magic. I will say one thing in agreement with Worf about Roger: if Roger truly believes the new Lasos are good ... then I'm thinking they are good.