Electric water pump worth the trouble?
Electric water pump worth the trouble?
I was thinking about getting one. I have heard of 10 hp gains at the top end and increased cooling capacity. I have also heard that they cant cool as well for a street driven car and are unreliable. What do you guys think? Anyone have one? I drive my car daily.
Is it worth the money? What is a good brand?
Thanks, Doug
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Central Indiana Camaro Club member since Oct. 2000
1991 Z28 - 51,000 miles.
All power options leather. 350 TPI:
K&N; Airfoil; Custom 'Ram-Air'; SLP Headers; Slp Runners;Poweraid TB spacer;
Fastchip;
Borla Catback 50% open; Dual factory Cats;
March underdrive pulleys;
Accel Extreme 9000 wires, Accel coil; Hypertech rotor & cap; NGK platinum plugs;
manual fan switch;
TB coolant bypass; smog pump delete
Pirelli P7000 Z245/50/R16 all season tires;
Energy suspention motor mounts
S Cobra Radar Detector; Z28 SS Floormats;
Technalon IV car cover (now on my dad'a 2000 Berger SS).
Is it worth the money? What is a good brand?
Thanks, Doug
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Central Indiana Camaro Club member since Oct. 2000
1991 Z28 - 51,000 miles.
All power options leather. 350 TPI:
K&N; Airfoil; Custom 'Ram-Air'; SLP Headers; Slp Runners;Poweraid TB spacer;
Fastchip;
Borla Catback 50% open; Dual factory Cats;
March underdrive pulleys;
Accel Extreme 9000 wires, Accel coil; Hypertech rotor & cap; NGK platinum plugs;
manual fan switch;
TB coolant bypass; smog pump delete
Pirelli P7000 Z245/50/R16 all season tires;
Energy suspention motor mounts
S Cobra Radar Detector; Z28 SS Floormats;
Technalon IV car cover (now on my dad'a 2000 Berger SS).
for the street i don't think i'd use one. for racing it allows you to run the pump to cool the engine without running the engine.
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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM
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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM
Moderator

Joined: Jul 1999
Posts: 17,262
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Agreed. And for the price of the high end electric pumps for street use, You could spend less money to get 10 HP. Electric motors will all eventually break down or sieze up.
Lets say you drive your car at least 2 hours a day 7 days a week. In 5 years you'll have over 3500 hours on the electric motor (minimum). Many electric motors like that are only rated for 2000-3000 hours life expectancy.
Think of the motor for your heater fan. When they start to howl and squeel, they're worn out. Those are cheaper to replace than a water pump.
The best thing to do for a street car is invest in an aluminum belt driven water pump. The Moroso claims 7 HP increase and the Edelbrock one clains to flow 20% more than stock.
My race car uses an aluminum pump however I use an electric motor to drive it but then it's not street legal either.
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Follow my racing progress on Stephen's racing page
and check out the race car
87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
461 Big Block installed and ready for the 2001 racing season
Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Altitude corrected rear wheel HP based on power to weight ratio: 476.5
Best 60 foot: 1.662
Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association
87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley
Lets say you drive your car at least 2 hours a day 7 days a week. In 5 years you'll have over 3500 hours on the electric motor (minimum). Many electric motors like that are only rated for 2000-3000 hours life expectancy.
Think of the motor for your heater fan. When they start to howl and squeel, they're worn out. Those are cheaper to replace than a water pump.
The best thing to do for a street car is invest in an aluminum belt driven water pump. The Moroso claims 7 HP increase and the Edelbrock one clains to flow 20% more than stock.
My race car uses an aluminum pump however I use an electric motor to drive it but then it's not street legal either.
------------------
Follow my racing progress on Stephen's racing page
and check out the race car
87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
461 Big Block installed and ready for the 2001 racing season
Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Altitude corrected rear wheel HP based on power to weight ratio: 476.5
Best 60 foot: 1.662
Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association
87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley
Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 2,361
Likes: 1
From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
<font face="Verdana, Arial" size="2">Originally posted by 91RedBigFinZ:
I was thinking about getting one. I have heard of 10 hp gains at the top end and increased cooling capacity......</font>
I was thinking about getting one. I have heard of 10 hp gains at the top end and increased cooling capacity......</font>
Increased cooling capacity? Never.
A electric pump will never outflow a mech pump no matter what. See this comparision with a cheap($69) Stewart pump compared to others.
http://www.stewartcomponents.com/ede...comparison.htm
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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
For what you have, I wouldn't make the investment.Spend the money elsewhere.
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350 4 bolt main, Speed-O-Motive 383 stroker kit, re-sized rods ground for clearance,TRW Forged pistons,10.7:1 compression,HPC Coated RPM intake, Speed Demon 750 cfm carb,World Products Sportsman II heads,2.02/1.60 valves, Comp Cam 1.6 roller rockers, Comp Xtreme 284 cam,240/246@.050 with .540 lift,Crane pushrods,ATI damper,Proform HEI and MSD6A box,HPC coated 1 5/8 headers, 2.5" exhaust with 40 series mufflers,TH350 with Hughes 3000 stall, Powertrax NoSlip Locker, 4.11 gears.
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350 4 bolt main, Speed-O-Motive 383 stroker kit, re-sized rods ground for clearance,TRW Forged pistons,10.7:1 compression,HPC Coated RPM intake, Speed Demon 750 cfm carb,World Products Sportsman II heads,2.02/1.60 valves, Comp Cam 1.6 roller rockers, Comp Xtreme 284 cam,240/246@.050 with .540 lift,Crane pushrods,ATI damper,Proform HEI and MSD6A box,HPC coated 1 5/8 headers, 2.5" exhaust with 40 series mufflers,TH350 with Hughes 3000 stall, Powertrax NoSlip Locker, 4.11 gears.
Moderator

Joined: Jul 1999
Posts: 17,262
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Since nothing in your sig says anything about your driveline I'd say
#1 Get a good torque converter. You'll notice more of an improvement than you will with a water pump.
#2 Gears. Something around 3.73 will wake it up also.
#1 Get a good torque converter. You'll notice more of an improvement than you will with a water pump.
#2 Gears. Something around 3.73 will wake it up also.
Trending Topics
If it was for my weekend only racer, of course I would slap one of those pricey puppies to the front of my engine, but if you do want to use it on a daily driver....take it from experience, buy a 3 core aluminum rad with a powerful fan cause those electric water pumps need ALL the help they can get when the heat kicks it up to about 80 degrees. and god forbid if it ever hit 90 or above!
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