Electric water pump question

[JoeliusZ28]

i have pieced the following data together:

55 GPM (3.50" tall, draws 8.0 Amps, 4.6 pounds) - Meizure Heavy Duty
43 GPM (3.00" tall, draws 8.0 Amps, 3.6 pounds) - Meizure
30 GPM (?.??" tall, draws 6.1 Amps, 3.0 pounds) - Summit / CVR
30-37 GPM (2.75" tall, draws 5.8 Amps, pounds? ) - CSR / CSI

Efficiencies:
MHD = 6.875 GPM per amp
M = 5.375 GPM per amp
Summit = 4.91 GPM per amp
CSR = 5.77 GPM per amp

which would you choose based on this? Im having a hard time getting an objective response on the tech boards. I have read the CSR seems to be perfectly sufficient in about 80% of cars, and no one has any complaints/bad experiences with any of them. I guess my biggest question is, how big of a deal is a couple extra amps of draw? If the 8 amps isnt that big of a deal... i dont see why i shouldnt go for the 53 gpm pump.

[c0ncEpT]

Well I'm not to sure about the LT1 but the LS1 Meizure pumps are labeled for race and street applications.

[JoeliusZ28]

thats probably the difference between standard an HD.. maybe?

I know to fit the HD you have to do some clearancing on the fan shroud.

The truth is i cant go wrong with ANY of these pumps. Im just a perfectionist and want to choose the best no matter how nit-picky i have to get. Right now i think im leaning towards the CSR.

[c0ncEpT]

Well the CSR looks to be the best buy size and efficiency wise. It draws the least power, is the smallest physically, and possibly weights the least of them all.

[JoeliusZ28]

yea i agree. I dont really feel like hacking up my fan shroud for an HD... and i dont like the fact that the standard draws the same current.

oh by the way if any sponsors want to shoot me a price on any of these, feel free

[WMCCjames]

Mechanical...zero amps FTW!

j/k Joel, I know you are set on going electric.

[ICEPICK]

Mechanical...zero amps FTW!

j/k Joel, I know you are set on going electric.

mechanical runs on the cam therefor it takes H.P. from your car and lags, im going electric was thinking of the CSR for price wise myself, street use dosnt run the same as track use but some prefer the meizure over any othere, i guess it just has to be what you want or prefer.

[JoeliusZ28]

yea there are a lot of people claiming 10rwhp from this, so i think its a pretty good bang-for-buck bolt-on mod. I'll also be able to cool down at the track without the engine running which is nice.

[csmith4153]

oh by the way if any sponsors want to shoot me a price on any of these, feel free

Will do, sometime today

[81DaytonaPaceCar]

yea there are a lot of people claiming 10rwhp from this, so i think its a pretty good bang-for-buck bolt-on mod. I'll also be able to cool down at the track without the engine running which is nice.

Only real negative I can think of is if you're marginal on your alternator.

Do you know what it is now? Might have to go bigger. Might not be a bad idea to go bigger anyway. With lights, fogs, air, and sound going, it will be marginal if you haven't upgraded already.

And a 8 amp draw will suck your standard battery dry fairly quickly if the car isn't running.

Other than that, based on where you're at now, I'd say go CSR.

[WMCCjames]

mechanical runs on the cam therefor it takes H.P. from your car and lags, im going electric was thinking of the CSR for price wise myself, street use dosnt run the same as track use but some prefer the meizure over any othere, i guess it just has to be what you want or prefer.

No way, and all this time I thought they ran off wind power from the car's forward motion. Damnit I feel stupid now.

[transampimp]

Let me know what you go with. I was going to go CSR if I ever did it. The only thing holding me back was the amount of miles I put on my car. When a mechanical goes out you know right away usually. I keep a pretty good eye on my gauges, but when a pump goes out the LT1 can heat up real fast.

I know when I leave the low fan on at the track for my radiator it drains the battery really quick. I'm thinking of an Optima battery this year. However I still think you would need to have your car plugged into a different power source to take full advantage of cooling your car with the ignition off.

I purchased a used pump off ebay a few years back. I think I paid $30 for it shipped with a 160 degree t-stat. I spent a few hours using a cheap press, and hammer removing the mechanical parts.

[JoeliusZ28]

Only real negative I can think of is if you're marginal on your alternator.

Do you know what it is now? Might have to go bigger. Might not be a bad idea to go bigger anyway. With lights, fogs, air, and sound going, it will be marginal if you haven't upgraded already.

And a 8 amp draw will suck your standard battery dry fairly quickly if the car isn't running.

Other than that, based on where you're at now, I'd say go CSR.

You do bring up a very good point here.

I just replaced my alternator with a new stock unit this fall. its not anything oversized, but its at least fresh and has a warranty. I know for sure even my low speed fan draws some power (i notice difference in my quarter mile times!!!). so yea i agree with you jeff, i think im gonna go CSR to keep the draw as low as possible... thats what im doing this for after all right?

Do you know of anyplace that sells higher output alts? I wouldve looked into it this fall but it was one of situations where i needed the car to move within the day, so i just took it to murrays and got a new one. I might look into trading up if they make higher-output alternators that dont draw any more on the motor. I imagine its not quite as simple as my truck where i could just order a 3/4 alternator and bolt it on.

Only counter-arguement i can think of is the number of people i see on the tech boards running the meziere HD just because they think they need them; ive never seen anyone mention upgrading their alternator.

Let me know what you go with. I was going to go CSR if I ever did it. The only thing holding me back was the amount of miles I put on my car. When a mechanical goes out you know right away usually. I keep a pretty good eye on my gauges, but when a pump goes out the LT1 can heat up real fast.

well see, thats exactly my theory on these pumps. When a mechanical dies... it dies very fast... usually dumping fluid onto the opti in the process. When the electric dies, it dies right then and there ... which is only marginally worse than the mechanical. IMO, if the pump dies its not a pretty experience either way. Ive got a temp gauge for each cylinder bank, and i also have a schematic for an overload LED on the waterpump.... which is about as safe as i can get until they start manufacturing these pumps with an RPM feed. (if you can monitor the rpm of the pump, you can have a safety light that is 100% accurate).

[81DaytonaPaceCar]

There's a couple of companies out there that make 140 amp alternators that run about $200 or so...looks like that's a 40 amp or more gain over stock...betcha one of the sponsors could hook you up.

[JoeliusZ28]

hmm, im gonna look into it. If a bigger alt is more efficient that would help me with my goal for 12s (internally stock and full weight). If its not though... id rather just overwork a warrantied stocker