[Mr Twister]

Any dyno comparisons between a belt driven pump and a Meziere? I'll admit my part of the week adhd got the best of me and i ordered one...

[Steve C.]

Not necessarily the answer to your question.... but some somewhat related interesting tip bits of interest.


https://forums.maxperformanceinc.com...light=Flex+fan

And probably some duplication here, but another.

https://forums.maxperformanceinc.com...light=Flex+fan


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[Don 79 TA]

you will see a gain on a dyno, but something to consider is the draw it will take from the alt, although not much
there are pros/cons to using the e-pumps
it can certainly aid in cooling, especially lower speeds, i know many LS friends who say..... it will make it run to cool, but they have more GPMs
i love the pump and have had it 10+ years
it paid off in the instance where i broke and lost the accessory belt
i was still able to drive 10+ miles home, still can't believe i was able to do that, luckily only one light i had to stop for. didn't think the battery would last that long
it certainly aided in cooling temps with my setup.
the gain in HP is going to be one of those things, that when you are at say 500ish HP, it's gonna be tough to "feel" that gain
if you're at say 200hp, you might "feel" it
there's been plenty of articles and what not posted on the webs/mags that show the HP gains
now a downfall could be, if you like to drive real far, and it goes out while out on the road, chances of finding one locally could be a problem
but if you dont drive far and thats not a concern for you, then shouldn't be an issue
again i really like it and will continue to use one
Mezeire does offer a remote pump and a plate to use AN fittings. just another option if one needs more than 42gpms

[PAUL K]

We've gained approximately 5 HP many times on dyno tests going from a water pump using a large factory drive pulley and switching to the Moroso electric. These were all on 550-650 HP engines... It's bit more complicated to test the Meziere but I'd assume it'd be about the same.

[Steve C.]

Again, I know the linked material above does not directly apply but it is somewhat related. Here is another....

Baseline Testing - Do Water Pumps Suck Power?
https://www.motortrend.com/how-to/hr...ps-suck-power/

And this from a LS1 forum....

I recently replaced the stock water pump for a Meziere Electric water pump and got it on the rollers to see what the differences were. The results of switching to the Meziere Electric Water Pump are a little surprising. It didn't increase my peak horse power but I gained about 15 ft-lb of peak torque. The really impressive thing is how much it bumped up my HP & TQ under the curve. When I seen the results I was shocked. I guess getting the stock water pump load off of the main serpentine belt does make a big difference. At least on a Maggie setup. I have attached the comparative dyno runs to this post. The Red lines are the Meziere and the Blue lines are the Stock water pump. The tune was not changed at all between these two runs. The run conditions (Temp & Humidity) between the two runs were very close to one another as well. These Dyno results show the pure difference between the stock and Meziere water pumps. For these results the Meziere Electric Water Pump is well worth the $$$.


Me personally I've been using one for years. As eluded to when in slower traffic or at a stop sign they are circulating the water at their full rated gallons per hour. Whereas in many instances in the same situation a 'stock' water pump circulates less.


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[Lee]

Around 2003 my '67 Firebird was running 11.6's with mechanical fan & water pump.

I changed to a Flex-a-Lite BlackMagic shrouded 3.300cfm fan and a CSR electric water pump. I didn't dyno it, but my e.t. improved close to a tenth and about a full MPH gain as well.

Highway speeds it would get to a bit over 190. But in traffic or low speed driving the temp would drop to 160 (thermostat temp).

On my old Falcon street/strip wagon, and also on a '68 Firebird I'm finishing up for a friend, I've used the DC Control 65p35 PWM controller, which varies the speed of the water pump and fan(s) to keep the motor at a more consistent temperature. http://www.dccontrol.com/constant_te...ontrollers.htm