Bill Ball

Based on the metal impeller, this is either the original WP or non-Porsche rebuilt Porsche pump. The WP bolts were so easy to remove I think that it is the latter, and he has records of it being replaced 25,000 miles ago.

Bill Ball

We did examine this, but the lesson here for me is that you cannot see the canting of the pulley until it is removed from the car. Perhaps it wasn't that canted until sometime during the ride home, but if you look at the 3rd and 4th pictures where the pulley is visible, it's hard to tell anything is wrong with it. It only became obvious after removal.

Granted, that would be a good idea.

JG928S4

Thanks for all the Help yesterday Bill, and Roger for getting me the parts, and Bill for the spares he had. I feel better w/the plastic blade pump in there now, and the Porkensioner, even though the pulled tensioner looked good and was holding oil. Having just have moved I have not yet unpacked all my docs for the car, I will make an effort to dig them up so I can get the date on the last TB change etc. from the Previous owner docs. It was done at about 125K miles as I remember, I have had the car about 4 years, this website has been very helpful keeping me into repairs/hobby stuff etc. A car can't get me upset.....I think...

Bill Ball

Oh, if it weren't for other peoples' problems like this, I would be a mechanical virgin. My car is approaching 213K miles on an untouched drivetrain, driven daily, and has never had a problem like this, crossing my fingers.

Bill Ball

We just let it idle. I'm pretty sure there is valve damage, although possibly very limited, based on the noise. Compression test in a week or so.

atb

Roger, any reported failures with the new Laso?
I'm seriously considering buying whatever is the best starting point, and then modifying it from there in such a manner that the impeller and pulley can't come off the shaft. I know that'll tube any core return later, but man that has to be better than having to do a tear down of the top end due to a failure.

jheis

The seized water pump I just pulled from my car was a new (rather than rebuilt) metal impeller Laso (albeit about six years old with 36,000 miles on it). There didn't appear to be any canting of the shaft or impeller - looked like a normal pump - except frozen solid. I didn't try to disassemble it.

There weren't any warning signs - fine one day & overheating within 5 miles the next. No unusual noises, no smell of burning rubber, just a very shiny timing belt.

James

Mrmerlin

FWIW if there is ever a time when you might think your smelling rubber or some other weird thing it is easy to remove the intake tubes and inspect the air cleaner....... WHY
Well if the belt is having problems the pieces will usually be sucked out of the tops of the cam covers and land in the air cleaner.

JG928S4

The History of Water pump:

Changed at Protech motorsports in Greenville SC 2/10/2003 @ 125,200 miles.
Cost of rebuilt pump, $130.00
drilling out bolts, and timeserting (3) $90.00 tl. $225.50 tl / no labor charge.

A week earlier, 1/27/2003 125,134 miles -- had timing belt job done, cam gears, roller done trans fluid etc. $798.00 (should have done WP too, thus the no labor charge above)

Aug 2005 All aux belts changed, timing belt tension checked tune up etc. at Previous owners new home mechanic in SLC / Motorsports, Nov 2005 compression and PPI done and car offered 4 sale w/all docs since owner not driving car much due to not wanting to drive in SLC salty roads etc. I purchased and moved car to So Utah, car now has 158,000 miles, (pink slip says odo exempt due to gear replacement I did since numbers were jumbled when turned from 149-150K).
Jon

JG928S4

Only thing in my air cleaner was bird feathers, it seems the shark had a flavor for them, put some miles on the car doing 117miles a day commuting from St. George to Cedar City (2500 ft - 5500 ft elev) cruise control 85 mph (speed limit 80 there). A wonderful drive. Lot's of dead birds, bounced over a few deer, I think Bill saw some Deer fur under the car when we pulled the belly pan. I think the assesment was correct that most melted solid after car parked.

IcemanG17

WOW.....hopefully the "damage" isn't that bad.......it does remind me of the welded belt that sharky had when it had a similar failure on the san mateo bridge back in 2004.....

ROG100

Jon,
For $130 I suspect a rebuild as Bill already said.

Adam,
No reported failures with the NEW Laso pump as far as I know.
If the pully is attached to the shaft and the impeller likewise I beleive there is no risk of failure such as machining of the block. This has been discussed before and suggestions such as spot welding and pinning were put forward. The seal cartridge shaft being attached to the pulley would stop any migration towards the block.
The better quality new seal cartridge within the WP also stands a better chance of lasting as opposed to the cheaper cartridge used in the rebuild.
There is no problem with core charges on new pumps.
If you clever people come up with an easy way for me to attach the pully and impeller to the WP I may start selling them until a new design comes along.
Roger

Bill Ball

I've done TimeSerts before, and they should be visible. We scraped the block surface clean and I saw nothing like TimeSerts. And I have to question whether the cam gears were done 25,000 miles ago. They had a LOT of wear on them. Either they weren't changed or the belt was severely overtensioned for a fair period of time, which could help account for the WP failure.

JG928S4

Yes Bill, when I pulled the docs and read that about timeserts I knew we diddn't see any on the water pump service area, maybe an excuse for not replacing pump first time, or somewhere else. I was also surprised to see the car has had 2 previous steering racks and pumps....

Roger, I believe there is a mention of failed new Lasso on another thread, am I mistaken? A current thread?

Bill Ball

It's an OLD new Laso. There is a NEW new Laso design.