syoo8

What a cool product! This is going in there upon the next TB change!

SeanR

I suppose this is as good a time as any, did Ed get the pump worked out so it didn't fail with normal use? I only know of four that had it installed and three of them no longer have it installed.

If I am wrong, then please post up here that there have been improvements.

I do know Kevin is no longer working with Ed, so that should be a major improvement on all aspects.

H2

The one I installed failed at 120 miles of regular use. I still like the concept though. For sure, as advertised, the valves didn't clash. Ed refunded a portion of my overall cost. This failure was the last straw for me and I sold the car for way, way less than I had in it. I hope the design gets perfected. Great idea. Perhaps a diferent drive material will be the cure?

GregBBRD

I still love the idea. The separate bearing was absolutely brilliant!

ammonman

I was one of the early adopters. The first unit I installed developed a seal leak after six months. Ed replaced that unit under warranty. The replacement unit lasted approximately 2 years and had signs of seal leakage and early stage shaft bearing failure when I replaced with a new Laso a couple of months back. I sent the unit back to Ed. I am waiting to hear the results of the post-mortem evaluation.

I too think the design is ingenious. I hope what ever issue caused the two failures I experienced can be determined and addressed.

Mike

Hollisterkiid92

I'm saving up for my TB and WP change so ill definately be getting this, also it allows time to see what reviews we get regarding the new modified pump

Mrmerlin

^^^^Just get a new Laso from Roger they work.
I have installed 9 of them and no failures .

69gaugeman

Apparently not THAT brilliant.

GregBBRD

Eliminating water from being able to ruin the bearing that the cam belt depends on was brilliant. And making that bearing a much more robust bearing was also a great idea. Having a water pump fail which can (and does) allow the valves to hit the pistons isn't a desirable consequence.

The "water pump" part of this design needed a bit more refinement to make the entire "package" a winner.

69gaugeman

I think that considering the package size constraints, that a better bearing design for the shaft itself would be engineering time better spent. engineering the symptom very rarely makes the product better. It might last longer but the original problem will still exist.

OBehave

Not sure what original problem that still exists you are talking about. When I began here on the list some years back I noted all the "problems" these water pumps were supposed to have. Cartridge bearings moving,pulleys moving and falling off,impellers moving and machining the block and cartridge bearings seizing and snapping timing belts etc.. With this criteria and trying to keep it simple and easy and cost effective I went to work and came up with a solution.
The "failures" that some refer to prove that the design works. If the impeller shaft is restricted in any way, the coupler shears.
Seals will leak and I can't reinvent the mechanical pump seal but I can source good quality ones. Also the only "problem" pumps have been brand new Laso pumps which I fitted my design on. Not all the Laso pumps but the few have been Laso. All the test and prototypes I did where either my remans or brand new Hamburg Technique pumps and to this day are still going. I even puty a Hamburg Technique refit on the Hanson stroker race car and after dyno sessions and track days is still performimh flawlessly.
After 2 Laso refits back in 2010 occurred almost at the same time
I decided to only offer pump which I totally re-manufacture myself. All my parts and all my labor except the core. They also have performed well.
The biggest issue in the water pump world is the quality of the work performed and the attention to detail. Using castings that the bores are oversized and the gasket surfaces ground too far and impellers loosly pressed on will give you fits.

polecat702

I'm running Ed's Guardian pump in my 89. It' works flawlessly in the Vegas heat!

69gaugeman

So does a factory one.

polecat702

That's fine with a 16 valve engine. A factory pump costs over a grand new. Ed's pump won't crash the valves, and it's a fraction of the cost, for a better product IMO.

Ken's tensioner is better than the factory tensioner. It's great to have a choice, in a free market.

nc_growler

I also have one of Ed's pumps in my car. The PO had replaced the TB/WP just 1200 miles earlier and the new pump (from Roger) developed a weeping leak. Roger replaced it under warranty since it had been less than 3 months since the install.

I sent the new pump to Ed. He modified it. I installed it. And I contributed to the refinement of the build process when the "breakaway" did breakaway on my first hard drive of the car after installation. The pump went back to Ed for inspection and after it was repaired (and the build process improved), I re-installed the same pump which had in-between spent a couple weeks in a supercharged 928.

That was 3 years and 7,000 miles ago. No sign of leaks. No cooling issues.

As several have pointed out, a new pump "could" do this too.

I'm sleeping better with the knowledge that if the pump should go, it might save my engine.

We all make choices. I liked this option and I love supporting guys who have great ideas and are willing to step up and try to make a difference for the rest of us. I intend to own/enjoy my 928 for a long time.

Thanks again Ed.

Stephen