beauphus

Hi all. I am in the process of splitting my IC system with a rear mounted tank but i am running into a snag. I ordered a meziere pump to replace the stock pump up front but others have told me, and i am inclined to believe, it wont be the right amount of flow. it is rated at 20 gal/m without restrictions BUT the inlet and outlet are being reduced to 3/4" so it wont quite be 20 gal/m due to restriction.

i cant run the pump in conjunction with the stock bosch pump because it is a positive displacement pump while the meziere is centrifugal so they wont compliment each other (or at least i am told). i was considering a second meziere pump BUT i am concerned it may be too much flow. i know some others on the board have run this setup with 2 CM30's but not real sure of their results.

bottom line - has anybody yet proven what works best for this split setup? am i better off with perhaps 2 stock bosch pumps (one front and one rear), 2 meziere pumps (front & rear) or 2 CM30's (front & rear)?

thanks!

shardul

iTrader: (1)

Meziere in the front and cm30 or stock updated version of the bosch pump in the back. BTW i have a updated version bosch pump if you are interested.

beauphus

i was under the impression that i couldnt put a meziere (centrifugal) in circuit with the newer bosch (positive displacement) because of the difference in how they pump. i could run 2 newer style bosch pumps perhaps. how much?

shardul

iTrader: (1)

IDK make me a offer, it is just sitting in the garage.

bassn_07

Hey Aaron, as you know I replaced my 2 CM30's with the Meziere pump and the CM30's in series out performed the single Meziere. I haven't tried a flow test yet but just going by visual, feel, and IAT's it was no contest. We had my car with the single Meziere next to another car with 2 CM30's and the CM30's looked to be flowing way much more volume. I honestly believe that asking one single pump to perform this task is way too much. Keep in mind that I run a rear reservoir with the Meziere pump mounted in the trunk.

I've been contemplating on what to do next, go back to the 2 CM30's or just purchase another Meziere??? In short I'm in the same boat as you but with 2 CM30's and 1 Meziere .

TopGun32

I have the Mezeire pump sitting on my garage..

anybody have some pics on the install for the pump?

I can't picture how it would be mounted vertically... or if I should look into a mounting plate...

beauphus

u think 2 mezieres would be too much? reason i would rather stay with meziere is i have heard from many that the reliability of meziere is far superior to the johnson cm30. i personally think a dual pump system just makes more sense no matter what - especially considering if one goes out at least you still have some sort of flow.

reitmeid

As far as series pumps go, remember, 2 pumps in series = same gpm, twice the "head". 2 pumps in parallel produce the same "head", twice the gpm. With series pumps you gain a failsafe-if one fails you still have the other pumping, but little else. Normally you increase gpm which equates to increasing cooling by increasing the pipe diameter and providing a suitable pump. When you can't increase the diameter like in this intercooler circuit, cooling improvements come with splitting the system, increasing overall fluid supply (trunk mount res,), improved H/E, and providing a suitable pump. When it comes to the pump, you might as well be talking red one or green one, because all the candidates in the known group of pumps accomplish the task. The little guys are rated 8-9 gpm, the big guys 15-17 gpm, but when any are placed in the infamous circuit, they all produce the same gpm result within about 10%. Even though I have a new cm90 that cost me $375.00 sitting on my bench, I'm beginning to think I'll switch from my currently pumping cm30 to the new Bosch because it's basically winning all the tests I've been putting these pumps through. Any really, none of them are going to break the bank when it comes to amp draw. So flip a coin, and hope it comes up bosch.

shardul

iTrader: (1)

i think a local member is making a bracket for the meziere, i will send you some pics once it is done.

wizos6

Zip tied that **** meziere pump and is is more than sufficient for want I need. Will spilt one day but not probls yet

320 dreamer

if anyone wants to sell their meziere pm me

TopGun32

Thanks Dave for the post...

quick question.. in my case.. I'm not looking for lower temps.. i'm looking for to reduce the recovery time.

Gallons per minute are within 10% between stock and CM90? wow..

Just tells me that if it takes me 30 seconds to recover from a full boost WOT run to normal IAT temps.. I'll be reducing 3 seconds if I go with the Mezeire pump over the CM30?

Before splitting the system.. the recovery was closer to 1 minute from spike to normal IAT cruising tempts.

I'm still planning to go with the Mezeire pump.. should I lower my expectations for the recovery time?

-Joe

Road Racer

Is it posible to splitting the IC system, but without the reservoir in the trunk?
Is it posible to install it in the engine compartment?? So it would only needs one Meziere pump?

bassn_07

I will most likely go with 2 Mezieres since I already had the plumbing changed to accommodate my rear one. Like I mentioned, the rear reservoir setup is too much for any single pump...IMO. I'll give you a call when I get some logging done with the 2 pump setup.