dprantl

That's how the later cars are set up. I think somewhere around '87 they changed the water pump where there is no longer a long fat screw supporting the idler pulley, and instead there is a raised cylinder protruding to the same point the screw would be at, then there's a threaded hole inside the cylinder and a countersunk screw goes in there. Since it is a very small screw, there is also the metal bar you see in the pic that goes across and is bolted by the screw, as well as two other WP bolts.

Dan
'91 928GT S/C 475hp/460lb.ft

the flyin' scotsman

What Dan said except the 2 bolts that retain the bar dont hold the WP in place to the block; they screw into the WP casting.

Also, when you have a Porkensioner the idler pulley is no longer required as are the bar, bolts, screw and large boss pin the idler pulley rides on.

blown 87

I clay'ed mine today, it is about .050 with out the gasket from the top part of the ridges to the plastic impeller.

That is a lot of clearance, add another 20 for the gasket, and

worf928

PC-7? or.... ?

blown 87

Thanks Brother, my blood pressure went up 30 points in 10 seconds flat. ( I would post this here , but there is nothing funny about it to me)

but to answer your question............

Why, yes, I did contact them right after I found it out, and it is no one here, but some of the big parts vendors here may buy wholesale parts from them.

I told him if this block was ruined he had two choices, one would involve him finding me another good squirter block, and the second would involve me getting on a airplane to have some face time with him and the person that said "**** Greg".

This guy boss wanted to terminate my account with them because I had a problem.
Guess what, I now really do have a problem.

You guys do not know me from Adam, and I am not a keyboard commando, just stating what I feel I, or they, need to do.

It is not over yet, he said I would have to take that up with the manufacture, but after buying maybe 1/2 million in parts from him over the last ten years, I found that unacceptable.

We will see if it over heats this summer and go from there.

blown 87

To make my last post clear, the new, at the time, Lasso pump did not come from a vendor that sells 928 parts here.

I also want to say that I bought this pump before Worf had turned me onto this place.

I also have NO doubt if I had bought this pump from one of the vendors here, there would have been steps made to keep me as a happy customer.

I also think if I wanted to use a new type Lasso pump with the new design that any of the vendors here would gladly take my even newer rebuild pump with the plastic impeller back.

The whole thing just pisses me off, not that a part failed, these things happen, but what is important is how things are handled after the fact when there is a problem, and I have never had a issue with any of the vendors here in that regard.

worf928

Greg, it's going to be iffy I think. The one I did the EBF to was, prior, about that and running warm-ish - consistently 10° to 15° hotter than it should have been.



Sterling? Did you read the whole thread before posting? Just askin...


EDIT: EBF was AFTER discovery of warm running.

blown 87

Thanks for clearing that up.

I have no idea how many timing belts and water pump, rollers, etc all I have replaced.
I have no idea what it is you are trying to say Sterling, so I am just going to ask, what are you trying to say?

worf928

Like Greg, I'm wondering what you are implying and what you implied originally and that's why I asked if you'd read the whole thread. Your first post into this thread seemed, upon first read, to imply that Greg was calling out a vendor, when in fact no where in the thread did Greg do that. Now, the way I read the above, you seem to imply that those of us that have installed water pumps, new Laso or otherwise, and had them fail in a few thousand miles are what? Imagining the block damage? Installed the pump incorrectly?

If I'm interpreting incorrect meaning to your post then please clarify.

worf928

Well.... I've also had my (first) 928 since 1997.... and I've participated in just about all of the recent water pump threads and it seems, to me at least, clear that Roger IS in fact very concerned about the quality of water pumps, rebuilt or otherwise and acting on his concern. Furthermore, I didn't read any implication in this thread that anyone was blaming Roger for the failure of either of the water pumps and resulting block damage. That's why your first post into this thread seemed out of place to me.

Black Sea RD

What exactly did Roger get done with Lasso? I ask because I was somewhat involved with this and I'm wondering what I missed?

Cheers,
Constantine

ROG100

Hi Constantine,
To answer your question, I did not do anything with Laso other than bring to there attention the current situation with regard to failures of 928 pumps and the overwhelming desire by the 928 community to resolve the issue.
I also did the same with Porsches manufacturer (MPG IIRC) who refused to acknowledge there is a problem to start with.
Mark at 928 Int did a tremendous amount of work with the WP rebuilders to try and get them to change there ways but again to no avail.
Recently Laso have been modifying their design even further to incorporate a new impeller material that is not metal but strong enough to attach to the shaft without coming off. I do not see any of the other manufactures or rebuilders doing that.
What is also very important is that we continue to have these discussions and bring to the fore any issues we are having with products so we can make continued improvements.
Hope that answers your question Constantine!!!

Black Sea RD

Thanks Roger! I remember our conversations about this topic and was hoping something came of it with Laso.

Wondering about the highlighted statement below. My company gave them a quote not too long ago about making the impeller from a material they specified and with the dimensions they gave us in their drawings. However this material did need a metal bushing. Never got a response back from them. Have they continued with this endeavor?

Agreed about the open lines of communications with suppliers!

Cheers,
Constantine

ROG100

Constantine,
Somewhere in my notes or in the original "marketing" thread I did state the material they wanted to use.
I will dig it up for you if it is important. In simple terms it was plastic.
I know they were looking at the cost of tooling and allocating money in there budget to make it.
With the current climate who knows where that went 8>)

You pays your money you take your choice.
I am asked all the time about what is the best option and always try and answer based on what I would do.
For my cars I use a Laso pump. Just the best choice out there at the moment taking into account reliability, functionality and PRICE.

H2

Until this WP issue is resolved, I'm sticking with my low-mileage, rebuilt by Porsche in Germany WP. I'm trusting foreign technology from Germany more than most places (but not China, Bangledesh, and a few other places that Bosch seems to moving towards, including some shoddy US products...which (if you look closely) many traditionally USA made products are now partially or fully made in a cheap labor, variable quality control country. USA quality is suffering in many places too as companies who used to take pride in Made in USA are forced to have China, etc. make their products in order to keep up with the competition. And I won't even bring up the GM quality vs Ricer quality issue. Bad times and we'll have to search out reliable parts solutions if our cars are to survive.

That said, I guess I still don't understand why a metal impeller couldn't be drilled and pin-secured to the shafe in a failsafe mode...or an expert quickie spotweld wouldn't accomplish the same thing (that is one without chance of injuring bearings, warpage, etc....it has to be possible..no?. Admittedly, an alternation like this might affect trade-in value but that would be of little concern to me when you weigh the consequences of a failed WP.

Thanks to all those here who are exploring solutions.

BTW...where's PorKen on this issue?

H2