Makes you wonder why the Meziere costs so much more, doesn't it?

 

I was going to say...the only difference between the two pumps is the housing and impeller. The motors for the two are exactly identical.

 

Anyone have pics of the impeller in the Meziere? Not too impressed with the impeller in the CSI model. If you look at the really good OEM impellers that have come out over the years, they have a "scroll" type (curved) impeller. Same thing with the new Moroso electric pumps. Too bad Moroso doesn't make a pump for the LT. I think that'd make for a more efficient pump but that's just my common-sense-engineering at work and that's been known to be wrong at times.
Any engineers out there want to expand on that theory??

Any pics of the Meziere would be cool for comparisons though.

-Mindgame

edit: link to the Moroso electric pump and its impeller

http://www.moroso.com/catalog/catego...?catcode=29300

 

Here's the impeller on a Meziere:

http://www.projecttransam.com/waterpump/mz_pump1.jpg

 

That to me looks like a better impeller RamAir. Maybe Chuck, Oldstroker, Injuneer or another of these engineering guys will chime in on what makes an efficient impeller.

From what I've read, the curvature in the impeller makes for an impeller that has less current draw and moves more coolant at the lower rpms. The Mez looks better though.... in my opinion.

Thanks for the pic!

-Mindgame

 

I've had the miezere for awhile know no proubles but if I had it to do over I would get the CSI for price alone I think it looks better also.

One more thing did you guys notice your engine running any cooler afterwards because if anything mine seems to heat up quicker know when I am at stoplights and the strip I end up running my fans alot more often

 

I just did heads/cam (CC306) with the CSI pump and my temp is still around 175 when cruising and 180-185 while stopped. I went with the CSI because of $ also.

Chad

 

Using the Meziere myself but I didn't think much about it when I bought the thing. Just figured they were both pretty much the same... then again, I've always used Edelbrock mechanical or belt drive pumps.
The price is so close between the two that I'd want the most efficient pump. Then again, maybe the differences there are minute as well.

-Mindgame

 

I thought the electric pumps were supposed to be a great cooling mod but my cars cooling system doesn't seem to be any cooler

 

The electric water pumps don't really increase cooling. I think, in part, because it pushes the water through the radiator so quickly that it doesn't have enough time to cool properly. It frees up the CAM to increase power and is needed for aftermarket CAMs. That's the real need for these. For cooling you should get water wetter, your fan temp lowered and a 160 stat of course.

 

You can use the same install guide, other than grinding the housing a bit. For saving $65, getting what I believe to be a better pump, its worth a little more work IMO, YMMV.

 

Did you totally bleed the system? I pretty much run 179º all the time, if anything I should raise my fan #1 point because I dont need to run that cool. I run almost no coolant, 5-10%, if you live in a very cold/hot climate though, you may not be able to do that. The boiling point is still high enough with the stock cap that I am completely in a safe zone.

 

Unless somebody is fibbing, the CSI draws a tad less current, and is rated to last about 1,000 hours longer, last time I looked at the specs.

I haven't heard of a single failure that I can recall, people complained about the seals but I use a bit of blue RTV along with it, not a single issue for me with the CSI.

 

The really nice thing about the electric pump is it allowes you to get a true double roller timing chain which will save lots of MONEY compared to the LT1 and LT4 timing chain. I got my timing chain for 90 bucks and its much better than the crap stock LT1 chain!

 

I have been very satisfied with my Meziers the last 2yrs Ive had it..I run mine off a relay and I have yet to have any problems with mine(knock on wood) My temp runs between 165-170 ALL the time even in Dallas traffic..I believe mine is a HD Mezeirs also

Cody