should I trash my NOS metal impeller waterpump?
#16
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If you do not know the history of your water pump do not take a chance.
We recently bought a large batch of "Laso" water pumps only to receive new pumps that were not Laso.
We sent them all back but I am sure they will surface somewhere else so beware. Laso are hard to find at the old price at the moment. New prices are a lot higher now.
Laso will say Laso on the casting and come in a blue and white box - it will have a plastic impeller and the extra bush between the impeller and shaft. The last Laso with a metal impeller was at least two years ago.
Porsche water pumps are about $1000 about twice the price of a Laso.
WE stopped selling rebuilt pumps about three years ago. It was about that time that we got Laso to add the extra bush and ultimately change to the plastic impeller.
If it was a new Laso and purchased from 928sRus it would at the very least have the extra bush and metal impeller.
We recently bought a large batch of "Laso" water pumps only to receive new pumps that were not Laso.
We sent them all back but I am sure they will surface somewhere else so beware. Laso are hard to find at the old price at the moment. New prices are a lot higher now.
Laso will say Laso on the casting and come in a blue and white box - it will have a plastic impeller and the extra bush between the impeller and shaft. The last Laso with a metal impeller was at least two years ago.
Porsche water pumps are about $1000 about twice the price of a Laso.
WE stopped selling rebuilt pumps about three years ago. It was about that time that we got Laso to add the extra bush and ultimately change to the plastic impeller.
If it was a new Laso and purchased from 928sRus it would at the very least have the extra bush and metal impeller.
__________________
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 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."
Last edited by ROG100; 05-28-2013 at 06:10 PM. Reason: more info
#17
Race Director
the cost of an engine vs a "thrown in" unknown old waterpump when you bought the car is a no brainer.....toss the old one and spend a little $$$ for piece of mind knowing your 928 is solid for a long time with a proper "improved" part....
#18
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The last new out-of-the-box Porsche pump I touched was less than $600, so that tells you how long my Alzheimer's has had to erase the impeller material from memory.
#19
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Here are some pics I had taken before I installed it. Bought from Pelican Parts around June of 2010, cost around $315. Has about 20K on it now.
I'm pretty sure the stamp under the part # (upside down) says LASO but I could be mistaken. Am I safe?
I'm pretty sure the stamp under the part # (upside down) says LASO but I could be mistaken. Am I safe?
#20
I am confused on what Porsche actually used and what they are now using. Did they use a plastic impeller originally on the 928 and have they ever upgraded the design on the OE pump? Then did Laso start using the metal impeller but are now back to using the plastic impeller.
#21
Drifting
I put a new metal impeller Laso on mine about 3 years ago this summer. I think that's about 18k miles. Is there a way to verify that the impeller isn't drilling my block?
#23
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I am confused on what Porsche actually used and what they are now using. Did they use a plastic impeller originally on the 928 and have they ever upgraded the design on the OE pump? Then did Laso start using the metal impeller but are now back to using the plastic impeller.
All good new WP's have a plastic impeller. Do NOT use a rebuild!!!!
#24
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I put a new metal impeller Laso on mine about 3 years ago this summer. I think that's about 18k miles. Is there a way to verify that the impeller isn't drilling my block?
#26
Former Vendor
I've never seen a Laso with the "extra" bushing have the impeller come loose.
I believe that this modification was done because Roger convinced them there was a problem and they came up with this solution.
And, of course, the newest iteration, with the plastic impeller, is completely Roger's doing.
Way to go, Roger!
#27
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That makes me feel better about my stash of extra waterpumps- the metal impeller Laso I have has the bushing, purchased May 2009:
And the 24 year old metal impeller NOS Porsche waterpump I picked up today:
And the 24 year old metal impeller NOS Porsche waterpump I picked up today:
#28
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The downside to the plastic impeller is the impeller can come loose and slip causing a higher RPM overheating issue. Not as big an issue as block damage but can be somewhat hard to figure out...heard of it many times over the years.
#30