Electric Water Pumps: CSR vs. Meziere - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #1 of 4 (permalink) Old 07-18-2007, 11:29 PM Thread Starter
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Electric Water Pumps: CSR vs. Meziere

I believe my car is about to be ready for it's 3rd water pump in 3 years. Even if it's not, I'm hoping for just a bubble in system, I'm thinking about switching to an electric pump as they seem to be less prone to bearing failure. I'm well aware that with the electric when it goes, its gone. However given the track record I'm having with mechanical ones I'm willing to take that chance. I searched the forums and found some old posts were people said they're mezieres didn't last long while someone highly touted the CSR. I'm hoping anyone with any experience could weigh in here with their opinion about which if the two is the better.
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post #2 of 4 (permalink) Old 07-19-2007, 12:28 PM
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Wow how are you going through water pumps like that? I've never had to change mine. Are you sure its the water pump failing?

1997 Z28
GM847, Pacesetter LT's, valvesprings
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post #3 of 4 (permalink) Old 07-19-2007, 04:03 PM
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A newbie here...Ill take a stab at this one;

We do Jeep V8 conversions, typically to LT1 and LS1's. We run nothing but CSR electric pumps on the LT1's. The constant 35GPM flow lets these motors run below 200 all day long, in sand, rocks, idleing around in low gears.
One issue with the pumps is the supply power and the adequate fusing, we run fuses and for emergency situations I run a switch on the dash that has its own power direct from the battery to assure power to the pump at all times in case of an electrical problem.
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post #4 of 4 (permalink) Old 07-20-2007, 07:30 PM Thread Starter
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The first two, one before actually handing cash over for the car three years ago and one last year, were definately the pump. I just got done replacing the timing chain and the Opti (which failed). I've had the car on the road for almost a month now, and a week or so ago the car seems to be running hotter. With my manual fan switch the low speed fan can only hold the temp, not lower it like it was able to before. The high speed fan will still bring it down but I would like to solve this problem before it gets to the point where it cannot. I was thinking that maybe it is an air bubble in the water pump...but that would mean it took 2 weeks for any air in the system to work its way up to the pump from the rest of the system....
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