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School me on electric water pumps.
#233826
02/23/09 12:52 PM
02/23/09 12:52 PM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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At what point, should an electric pump be considered? Is it an HP or RPM question. Too much of either making it more prone to throw belts? How about when there will be an alternator in the mix as well? Alt will have a micro switch that shuts it off under full throttle. I've looked at the Meziere, Moroso and Summit electric pumps that just bolt in place of the stock-type unit. Are these constant duty pumps that will live on street driving as well? An electric pump will make pulley alignment easier given the new motor plate and alternator. Just have to align the alt to the crank if I were to go electric pump. Just wondering if they hold up to constant duty driving to local cruises, etc., or if they're designed to just work for 1/4 mi bursts. 
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Re: School me on electric water pumps.
[Re: G_bob]
#233827
02/23/09 12:54 PM
02/23/09 12:54 PM
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Joined: Jan 2003
Posts: 19,358
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,358
Las Vegas
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Well for most it is a matter of being able to cool the car down between rounds. With an electric pump and fan it is easier to cool the car off than with a mechanical set up. AS for street driving I have never done it but know of a few that do with no issues. As for the pumps themselves I prefer the Meziere ones.
I run an alternator as well. I need the current to keep everything running on the car. There is a fair amount of electronic stuff on my heap.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: School me on electric water pumps.
[Re: G_bob]
#233828
02/23/09 01:00 PM
02/23/09 01:00 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
At what point, should an electric pump be considered?
Is it an HP or RPM question. Too much of either making it more prone to throw belts?
How about when there will be an alternator in the mix as well? Alt will have a micro switch that shuts it off under full throttle.
I've looked at the Meziere, Moroso and Summit electric pumps that just bolt in place of the stock-type unit.
Are these constant duty pumps that will live on street driving as well?
An electric pump will make pulley alignment easier given the new motor plate and alternator. Just have to align the alt to the crank if I were to go electric pump.
Just wondering if they hold up to constant duty driving to local cruises, etc., or if they're designed to just work for 1/4 mi bursts.
I know of alot of guys running them on their street
rods(I do also), they flow plenty for the street.
Most likely your pulley's have a alignment issue
to pitch the belt unless its a SUPER long belt. I
have been running a alt belt turning 8000+ rpm and
never pitched it. Look at the alignment when the belt
is tight... also take the belt and lay it on a flat
surface, if its bowed up its a alignment issue
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Re: School me on electric water pumps.
[Re: G_bob]
#233829
02/23/09 01:18 PM
02/23/09 01:18 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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Bob, I`m going on 6 years w/my drop in moroso and it cools good and frees up a few ponies. My alt drives off of the crank w/one belt and that`s it.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: School me on electric water pumps.
[Re: AndyF]
#233834
02/23/09 03:49 PM
02/23/09 03:49 PM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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Quote:
Mancini Racing has pulley spacers if that is what you want. They sell a 0.375 thick spacer for the crank pulley to match the 0.375 thick motor plates.
I looked at that and I wish it was as simple. My previous plate was .250" thick and the crank pulley had a .850 spacer behind it. They were lined up perfect.
So, in effect, I need an additional .125 to equal the new .375" plate. 440 source has a .125 shim, but not sure I want to stack spacers and shims behind the pulley.
I'll get it figured out once I have the motor back in hand.
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Re: School me on electric water pumps.
[Re: AndyF]
#233838
02/23/09 06:42 PM
02/23/09 06:42 PM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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Quote:
You must have the wrong set of pulleys then. Might be easier to just buy the correct pulley's and then you only need the one .375 spacer and it will all line up.
You're right. Offset on my pulley is 1.5". Correct should be 2". I "think" the balancer is a little thinner than stock (maybe .100") so that plays in as well.
It was previously set up with .250" plate, .850" crank pulley spacer and 1.5" offset pulley. That "should" have put the crank pulley .100" out past the w/p pulley but it didn't, they were aligned. That's what leads me to think the balancer is a little thinner.
I may very well just get the electic water pump, correct crank pulley and then just set up the new alternator to align with the crank pulley, wherever it ends up. 
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Re: School me on electric water pumps.
[Re: G_bob]
#233839
02/23/09 06:54 PM
02/23/09 06:54 PM
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Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
PUNK
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
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G-Bob, since you are so close to Bobs shop, I would take a little drive over there so you can see the low mount alternator setup that he has that is to be used in conjunction with an electric water pump. My brothers car runs a Meziere electric water pump on the street and its fine when its cool outside. However his is only the 35gpm version. I have heard that the bigblocks have a 55 gpm version by meziere and they have no street cooling issues. If I was you I would definitely do the Meziere with the low mount alternator/brackets/pulleys that Bob has over there. The belt ends up being very short and the alternator is out of the way. Bob sells the ones made by a company called Doty.com. VERY nice stuff. They are worth power to. My friends car picked up 2.5 mph when he swapped to an electric water pump. Thats all he changed!
10.53 @ 125mph. 1.37 60 foot. Caltracs and Monoleafs, AFCO shocks.
Heads by INDIO MOTOR MACHINE; IMM.
CP Pistons, PC Carbs.
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Re: School me on electric water pumps.
[Re: G_bob]
#233840
02/23/09 08:29 PM
02/23/09 08:29 PM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Go with the electric pump. On my ride the switch was worth .2 tenths pump/fan. Its a tough call as to witch one to pick. If you have the aluminum housing Id consider either a Moroso or Meziere drop in. But I dont think they are nearly as efficient as the complete bolt on counterparts. Summit has their own pumps now too but their listed price doesnt include the manifold housing. As far as the pumps motors continuous duty, Meziere claims 2000 hours. And as comparison Summit claims 10,000 hours. Ive not seen nor recall any claims from Moroso on thier pumps life. But my advice, go with a electric pump as I know your looking for extra hp. And any of the pumps listed above should be enough to cool your ride and then some. mike  Edit,Spelling correction  my spelling sucks sometimes.
Last edited by Sport440; 02/23/09 11:05 PM.
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Re: School me on electric water pumps.
[Re: 1Bad440]
#233845
02/24/09 12:14 AM
02/24/09 12:14 AM
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Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer
master
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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Let me ask this, How much of a weight gain is there over the old cast iron water pump, compared to the all new self contained electric units sold through CSR/meziere unit? Besides the 10-15 hp gains.
[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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