Virginia's Block Gets Drilled - By a Failed Water Pump
#16
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There are only three new WP's available - Laso, Porsche and Hamburg Technic.
My money is still with Laso (based on numbers sold) and once they start with the ABS impeller they will be number one in my book.
Not perfect but the best choice by far.
My money is still with Laso (based on numbers sold) and once they start with the ABS impeller they will be number one in my book.
Not perfect but the best choice by far.
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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 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."
#17
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These failures are simply unacceptable! Dwayne sorry to hear about this. I hope you're able to make the necessary repairs and get the block back in spec.
Seems right now the only pump that is reliable is the OE Porsche Pump although I've heard these can also fail.
We all need to come together on this and look for a reliable alternative.
Seems right now the only pump that is reliable is the OE Porsche Pump although I've heard these can also fail.
We all need to come together on this and look for a reliable alternative.
#19
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Dwayne I will find out from their MD asap.
The Porsche new pump based on averages is way down the list. They sell very few compared to the Laso and they fail. You sell 100 pumps and two fail thats not good. You sell 100'S and one fails thats better. Not perfect but a step in the right direction.
I am not aware of any failures with the new Laso pump.
Laso is the only company with any interest in our plight and is moving towards the perfect combination.
Cost, new, plastic impeller.
Remember MPG the Porsche pump manufacturer has no interest in changing anything with their 30 year old design.
Thanks again to Greg and Steve for the fix.
The Porsche new pump based on averages is way down the list. They sell very few compared to the Laso and they fail. You sell 100 pumps and two fail thats not good. You sell 100'S and one fails thats better. Not perfect but a step in the right direction.
I am not aware of any failures with the new Laso pump.
Laso is the only company with any interest in our plight and is moving towards the perfect combination.
Cost, new, plastic impeller.
Remember MPG the Porsche pump manufacturer has no interest in changing anything with their 30 year old design.
Thanks again to Greg and Steve for the fix.
#20
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I've measured the depth of cut. It's just shy of 1/8" or about 3mm. If I can't repair the block while in the car, I'll probably try fitting a new WP and see what affect on engine temp there is with the 3mm gap - should be interesting!
#22
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Dwayne I will find out from their MD asap.
The Porsche new pump based on averages is way down the list. They sell very few compared to the Laso and they fail. You sell 100 pumps and two fail thats not good. You sell 100'S and one fails thats better. Not perfect but a step in the right direction.
I am not aware of any failures with the new Laso pump.
Laso is the only company with any interest in our plight and is moving towards the perfect combination.
Cost, new, plastic impeller.
Remember MPG the Porsche pump manufacturer has no interest in changing anything with their 30 year old design.
Thanks again to Greg and Steve for the fix.
The Porsche new pump based on averages is way down the list. They sell very few compared to the Laso and they fail. You sell 100 pumps and two fail thats not good. You sell 100'S and one fails thats better. Not perfect but a step in the right direction.
I am not aware of any failures with the new Laso pump.
Laso is the only company with any interest in our plight and is moving towards the perfect combination.
Cost, new, plastic impeller.
Remember MPG the Porsche pump manufacturer has no interest in changing anything with their 30 year old design.
Thanks again to Greg and Steve for the fix.
Thanks for the quick response. I'll stand by. If Laso will have the "perfect combination" available by the time I can repair the block, I'd like to get that version. If not, I would like to find out more on the "new Laso" version, especially if it has no reported failures. I like the idea of using the plastic impeller but if there's a metal impeller version available with the lowest failure rate of all, it's worth considering. THANKS!
#23
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At least that is what it looked like to me, I will defer to Greg Brown to say exactly what happened to it, he has my old pump.
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If that's how you want to spend your time I won't stop you. But, IMO, you will see increased operating temperature with that much gap. BTDT and had to do it again.
#25
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I didn't realize this had already been tried. Was your depth of cut/damage similar to mine (about 3mm)?? I'm curious how significant the increased temperatures were. Since you had to do it again, I'm assuming they were significant - yes?? What was your final solution? THANKS!
#26
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Sorry to hear this Dwayne, Greg has a fix for this check it out, it looks like its the best way to remedy the situation, then fit a different water pump
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I'm curious how significant the increased temperatures were. Since you had to do it again, I'm assuming they were significant - yes??
So, the IBM'd block seemed to result in about 10°F higher temps at the water bridge. Some folks might be able to live with that. The owner of the '87 in question didn't want to.
Years ago, I did a WP on an '89 with ~1mm of IBM and its temperatures were fine with just a rebuilt pump (gulp ). The threshold seems to lie in the 2 to 4 mm range based upon my two data points.
What was your final solution? THANKS!
#30
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Seems like the complete seal cartridge moved within the casting.
One of the classic failures reported with rebuilds.
The interferance fit of the seal cartridge to the ID of the casting bore is compromised by repeated rebuilding without considertaion of the effect.
One of the classic failures reported with rebuilds.
The interferance fit of the seal cartridge to the ID of the casting bore is compromised by repeated rebuilding without considertaion of the effect.