zeshawn

besides the cooling advantage, I see they claim xx HP increase, did anyone with a Mezziere electric water pump ever realize a gain in HP?

I know it only makes sense but, my question is more of is the difference measurable

thanks.

ramairws6

Time after time it usually gains you about 8 rwhp +/- not really worth the money IMO....................

skudlw

I saw lots of bad press with this type pump. Not worth the hassle.

BgBoost1

Jim Hall tested one a while back and got something like 12 hp with it (or close to that) although I cannot find the thread he posted.

http://forums.corvetteforum.com/c6-z...ater-pump.html

Oh wait...I did find it.

http://forums.corvetteforum.com/c6-z...e85-build.html

From these 2 threads it seems to be a debatable hot (or Cool) topic. I will stay out of this mess.

kumar75150

I had one on my Z06 and saw 10hp on the dyno.

Also put one on my C6Z06. Didnt dyno.

Havent had a single problem with it on either car.

LEAVINU

This is what I gained on a LS2.

Removed the pump with less than 1k miles due to it failing out of the blue for no real reason.

Katech_Zach

We tested them on the engine dyno. The stock pump outperformed in flow and horsepower.

badtbon

Wasn't that the high flow beta mechanical pump you are thinking of? That was the report I heard on that one. Lost some HP and had slightly more water pressure.

The electric pump did not get there in time for your engine dyno testing.

I have seen 10 RWHP gain on a C5, but not enough water pressure. Hot spots ruined all 8 cylinders with this pump.

Not installing it because it is electric makes no sense since everything on your car ruin on 12V. Not installing it due to hot spots is reason enough.

Check out their new mechanical pump, but not from a horsepower gain standpoint.

Katech_Zach

You're half right. The power difference was with the billet mechanical pump. The stock LS7 outperformed. The electric pump was never tested for power because it was removed after flow testing because of it's dangerously low flow.

zeshawn

damn, thats bad to say the least... How long ago was this test done?

Katech_Zach

Earlier this year

Black_Mamba

I have seen cars with the Meziere run cooler and cool down quicker between dyno runs. Know of someone with one on a C5Z for three years now zero problem and the car is a daily driver that races on a weekly basis. Another friend has one on his C6Z no problem.

ramairws6

Yep, this is what i've come to hear from many reputable tuners.

mpizz

Never could get my car to cool right here in houston.Tried everthing they said.Put the stock one back on and never had a cooling issue again.
Mike

MTIRC6Z

Some questions:

Is Jim Hall still running the EWP on his car or has he removed it in light of this latest info about how inadequate such a pump is? How much damage was done to Jim's Katech engine due to the EWP?

Also, I presume this 'dangerously low flow' issue must mean that Meziere is lying about the 55gpm rating of their pumps?

Cheers, Paul.

badtbon

It is for sale, so that should answer your question.

Dicecal

Anyone try this Edelbrock water pump, I'm assuming it will fit an LS7?



Two-Piece Pump for GM Gen III & IV LS (3/4" pilot shaft) 8896 N/A N/A
* Fits 1997-2007 GM Gen III LS1 and Gen IV LS2 & LS3 engines with 2005-2008 two-piece Thermostat assembly (GM PN 12600171). Has 3/4" ball/ball bearing. Dimension from block surface to hub: 6" (Replacement Cartridge for Edelbrock GM Gen III & IV LS water pump #8897)

BgBoost1

Good Question.

As far as it being for sale. I took his post about the HP Increases to state that he was offering them for sale to everyone, not selling the one that gave him the 12 or 13 hp. But then again, I have been wrong before!

EuroRod

I've run the Meziere electric pump on my ProCharged car for 2 1/2 years with zero issues. Along with my Ron Davis radiator and 160 t'stat, my car runs 180 coolant & 190 oil temps in 95 degree summer heat with the ac running. I also have it powered thru the accessory circuit, so I can circulate coolant without the engine running for quick cool downs. When running the car hard with boost, the oil temp will rise to 210, but returns quickly. I will use this pump again.

zeshawn

Ok guys, all of this does NOT make sense at all.

Stock water pump makes more HP - as claimed by Katech - simple does not make any logical sense. How can removing load of the crank result in reduced power and/or increasing load on the crank net more HP.

I will assume that the EWP will flow much more than the stocker on idle and low rpm, however get outflowed at the higher RPMs.

Someone should have a figure on how much the stock pump flows at 6000+ RPMs, and compare that to the meziere.

Also