I've seen in a couple magazines that a company called Meizer or something like that sells electronic water pumps, which adds horsepower by basically removing the water pump pulley. The pully is still there, but it spins on a bearing instead of pulling anything. My question is, does anyone have an electronic water pump? If so, how does it work. Im guessing that it dosen't increase flow as you increase the RPM's either so it just has a constant flow, which could be helpful when either sitting in traffic or letting the car cool down after a run. So if anyone knows anything about these water pumps please chime in.

 

I have had my eye on these for a while. SummitRacing sells them and there is an adapter that makes install in our cars easy.

 

yeah, i saw it in the summit racing magazine.

 

Funny you should mention the Meziere unit, because I just ordered one from Summit this morning. Of course it's for the airplane motor, and not the FD.

On the airplane list, we've had some pretty heated discussions about the claims of EWPs, though much of that has been directed specifically at the Davies Craig unit that's sold in Oz. Interestingly, the Davies unit can be purchased with an electronic thermostat that varies the flow rate to regulate the temp. The jury is still out on whether this is a good idea, but I personally don't think so. They all claim to save a bunch of HP over the stock unit, but that's not my primary reason for getting one for the plane.

The number one reason (for the plane) is installation simplicity. The Meziere unit has a remote mounted pump, and an adapter block that bolts where the water pump housing is normally. On a car, with lots of accessories, removing the water pump and housing will cause no end of grief. AFAIK, Meziere doesn't make an EWP for the 13B that mimics the mounting of the stock pulley. On the plane, the only think I'll have is the alternator, which mounts too high to clear the cowling anyway, as does the stock pump housing itself. Bruce Turrentine is finishing up my engine now, and is supplying me with a side alternator mount, so that problem is solved. The pump will simply mount low on the firewall, and attach to the engine and radiator with hoses.

Other advantages include better cooling when at low speeds, or even with the engine off. For a car, this would be good to keep the motor cool between drag runs, or as the ultimate addition to a turbo timer. For the plane, it will allow me to keep the motor cooler during long delays on the ground, when airflow is limited.

Another advantage is elimination of high rpm cavitation of the stock pump. I may choose to run the airplane engine at 7500 rpm for literally hours at a time, producing as much as 230 HP.

Bottom line is that I haven't seen anyone actually running one of these on a car or plane, but it's a good enough idea that I'm willing to give it a try. That's why they call them "experimental" aircraft With any luck, the plane will be up and running by Summer, so I'll find out if it works by then.

Cheers,

 

I've gained up to 15 RWHP in the entire power band with the Mez. pump on a PP 13B. ET.s dropped from consistent 11.30's to 11.17's. The motor also runs a lot cooler and cools down in less than 3 minutes after a run.
High rpm cavitation is no longer an issue. BTW. We were already using the Mazda comp. pulleys reccomended for 10k + rpm's.
I must say it was the easiest 15 hp increase on an all motor car.

crispeed
87 RX-7 TII
9.204@150.47mph
2600lbs
un-tubbed

 

Good info to hear. Was the EWP used on a street driven car, or was this just for drag racing? I'd love to hear that someone has put a zillion miles on one of these pumps without failure. It's going to be hard for me to pull over and call AAA from the plane

Thanks,

 

The pump does have a certain life span though. I cannot remeber how much hours the pump was tested too. I personally would not use it daily but it can be done I guess.
BTW. You have to relocate the Alt. to the driver side where the PS and A/C would be so that alone would rule out it's use on a true daily driver!

crispeed
87 RX-7 TII
9.204@150.47mph
2600lbs
un-tubbed

 

hmmm, soudns like the benifits are very interesting. It just seems like a problem to remove the AC and PS for a daily driven car, and taht the water pump has a life span that may or may not last longer then the engine.

 

Thanks. As for the lifespan, Meziere makes it sound like they live a long long time, but the web page doesn't exactly put that into hours. If the pump doesn't have any hour rating in the documentation, I'll give them a call and see what they say. Unfortunately, I'll have to tell them it's for the car, since most manufacturers seem to curl up in the fetal position when they hear the word airplane

I put a lot of thought into the reliability aspect of using an EWP in the plane, and have concluded that it's at least as reliably as a belt. The stock pump is pretty reliable, but I worry about the belts. The only time I was ever stranded (in a car) by a water pump related failure, it was due to the belt. I also know of one 13B that was ruined in-flight when the belt came off. The wonderful thing about these little engines is that they WILL get you to an airport, regardless of what you do to them. Can't say that for piston engines, even certified aircraft engines.

Cheers,

 

A little indifferent on these topics about cooling. I tried a ton of different ideas on different cars but the electric cooling motors were always a little dicey at best. Wouldn't recommend it on a daily driver. Awesome on 1/4 mile race engines but your stock cooling setup is pretty reliable.

You will get some Hp out of it but if cooling motors are still the same as they were before, you will still reclaim some of it when the motor is really humming to keep the volume up and as it gets hotter, it gets less efficent - lord knows how hot these engines get. All that drags on your alternator which is already pretty taxed by the capacitive ignition and cooling fans on the radiator (not to mention some people with the stereo from hell).

But then again I might be wrong, they might have these suckers down now where they are much more reliable and more efficent. Just a warning that everything comes with a price. If they were this efficent and reliable, most car manufactures would be using them now.

My $0.02 worth----

 

Can you explain what you mean by this? Have you tried one of the high flow motors like the Meziere or the Davies Craig, and found that they didn't perform as advertised? Did they fail in a short period of time?

I'm not trying to give you a hard time. I'm genuinely interested in any first hand knowledge. As you can imagine, reliability will be very important to me

Thanks,

 

I've been looking into this for some time and think it's the next thing to do on the already long list. Anyone else have any input?

 

Carlos Iglesias is running an electric water pump of some sort, I think it might be a Meziere. It was car of the month in RX Tuner at some point in time. "CYMonster" was the title of the article.

-s-