Best Water pump?
08-14-2009, 08:12 PM
#46
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I've read so much about these failures I've decided to put my idea out into space here. With metal impellers machining the block when they fail, why can't someone just spotweld the impeller onto the shaft so it never spins off? The weld can easily be ground off during the rebuild process.
08-14-2009, 11:07 PM
#47
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You can also order a rebuild through a Porsche dealer (like Sunset) and it will also come with a plastic impeller if it is a Porsche rebuild.
08-14-2009, 11:54 PM
#48
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I just replaced my WP............it was a Porsche version with a metal impeller.
The replacement is a new Laso, new version..............time will tell.
I changed the pump for 2 reasons;
1) I was losing coolant sometimes, not much but enough to be of concern.
2) I had no idea when the WP was last changed
In retrospect there's nothing wrong with the old pump............I was losing a/f through a bad seal on the water bridge. To make matters worse I broke one of the bolts during the project that in reality wasn't required.
The replacement is a new Laso, new version..............time will tell.
I changed the pump for 2 reasons;
1) I was losing coolant sometimes, not much but enough to be of concern.
2) I had no idea when the WP was last changed
In retrospect there's nothing wrong with the old pump............I was losing a/f through a bad seal on the water bridge. To make matters worse I broke one of the bolts during the project that in reality wasn't required.
Last edited by the flyin' scotsman; 08-15-2009 at 12:27 AM.
08-15-2009, 12:18 AM
#49
No matter what vendor you get them from, check to see if the water pump has any axial play on the shaft. I know that Roger checks them before sending them and a few from each source have been sent back for that.
08-15-2009, 01:04 AM
#50
Under the Lift
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Bill, a rebuilt from 928 specialists has always come with a plastic impeller. Whether or not 928 Specialists may also, now, no longer be offering rebuilts I don't know.
You can also order a rebuild through a Porsche dealer (like Sunset) and it will also come with a plastic impeller if it is a Porsche rebuild.
You can also order a rebuild through a Porsche dealer (like Sunset) and it will also come with a plastic impeller if it is a Porsche rebuild.
08-15-2009, 03:31 PM
#51
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I just replaced my WP............it was a Porsche version with a metal impeller.
The replacement is a new Laso, new version..............time will tell.
I changed the pump for 2 reasons;
1) I was losing coolant sometimes, not much but enough to be of concern.
2) I had no idea when the WP was last changed
In retrospect there's nothing wrong with the old pump............I was losing a/f through a bad seal on the water bridge. To make matters worse I broke one of the bolts during the project that in reality wasn't required.
The replacement is a new Laso, new version..............time will tell.
I changed the pump for 2 reasons;
1) I was losing coolant sometimes, not much but enough to be of concern.
2) I had no idea when the WP was last changed
In retrospect there's nothing wrong with the old pump............I was losing a/f through a bad seal on the water bridge. To make matters worse I broke one of the bolts during the project that in reality wasn't required.
I know wp's are to be replaced with the belt, but if its working fine, perhaps leaving it in is a viable option.
And I've got the porkensioner waiting for install at that time. Oh yeah baby!
08-15-2009, 03:39 PM
#52
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Supply all the pumps and until recently the rebuild was the biggest seller.
Laso is by far the number one seller now.
I still sell the rebuild but only after explaining all the options to the customer. Fine for an older non interferance engine.
Practically nobody buys the Porsche due to high cost.
Sold two Porsche rebuilds in the last 6 months.
Sell about 2 to 6 Laso a week.
About 1 or 2 rebuilds per week.
Sean is correct as I check the WP both visually and physically. Not unusual to find shaft movement. Also bad machining or placement of the pulley on the shaft.
I also do not like the early style that has been modified by machining to the later style.
Laso is by far the number one seller now.
I still sell the rebuild but only after explaining all the options to the customer. Fine for an older non interferance engine.
Practically nobody buys the Porsche due to high cost.
Sold two Porsche rebuilds in the last 6 months.
Sell about 2 to 6 Laso a week.
About 1 or 2 rebuilds per week.
Sean is correct as I check the WP both visually and physically. Not unusual to find shaft movement. Also bad machining or placement of the pulley on the shaft.
I also do not like the early style that has been modified by machining to the later style.
__________________
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."
Last edited by ROG100; 08-15-2009 at 04:14 PM.
