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Author
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Topic: How much quicker with electric water pump
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mustangboy
Gearhead Posts: 652
From: Ont, Canada
Registered: Mar 2002
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posted 05-22-2003 07:56 PM
  
Hey guys I'm looking to free up some more hp.Taking off my power steering belt is always good for a tenth.What about an electric water pump drive?Any before and after comparisons?I would think the water pump would take at least as much power as the power steering,probably a lot more.------------------
1968 mustang j-code sprint.13.69@101 306cu.in, stock ported heads,weiand exellerator,650 holley DP,hedman hedders,comp 292 Magnum cam,4-speed,8 inch 4.11 detroit locker http://mustangsandmore.50megs.com/MembersPics/mustangboy.html
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70coupe
Gearhead Posts: 357
From: Toronto,Ontario,Canada
Registered: Aug 2000
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posted 05-22-2003 08:42 PM
I gained the most by going from a flex fan to an electric fan. Almost 3 tenths! I would say the water pump would gain you around 1 tenth and 1 tenth for the power steering.------------------
351c 4v clsd heads
60'1.580
1/8 [email protected]
1/4 [email protected]
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steve'66
Gearhead Posts: 6522
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 05-22-2003 10:04 PM
I doubt it'll be much quicker. The real advantage is cooling the engine between rounds. If you can run the electric fan and water pump w/o the engine running that will cool the engine quickly.SteveW
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kid vishus
Gearhead Posts: 4538
From: middle of NC
Registered: Oct 2000
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posted 05-22-2003 10:23 PM
I've always been under the impression it was worth about a tenth to get the water pump off the crank. I could be wrong though.
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67coupe
Gearhead Posts: 384
From: dallas NC usa
Registered: Nov 2000
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posted 05-22-2003 10:26 PM
id think it would be around a tenth too and i also agree with steve bout cooling the motor between rounds------------------
Josh
67 coupe with 351c
8.41 in the 1/8
1.90 60'
at 82.03 mph
94 Explorer
30 model A currently rustbucket
in process 67 convt with efi 5.0 and t5
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steve'66
Gearhead Posts: 6522
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 05-22-2003 11:19 PM
I should mention that I think .1 in the quarter is "not much".  On a slower/13 second ride it's probably less than .1, but I could be wrong, Heck I'm still running a cast Iron belt driven stock water pump on the 408w. But if someone donated an electric pump I would run it but mostly for the cooling abilities between hot lapped rounds. SteveW
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kid vishus
Gearhead Posts: 4538
From: middle of NC
Registered: Oct 2000
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posted 05-23-2003 07:38 AM
quote:
Originally posted by steve'66:
Heck I'm still running a cast Iron belt driven stock water pump on the 408w.
KK's brother is still running a factory iron water pump on his 408W. And it runs 5.70's in the 1/8.
If I can remember on my '70 when it was running mid 12's, the electric water pump drive was worth around a tenth. It might have been a touch more, but I don't remember exactly. And since i was a beginner, I wasn't logging anything down at that time so I have no actuall records of it.
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indyphil
Gearhead Posts: 773
From: Lafayette, IN, USA
Registered: Jul 2002
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posted 05-23-2003 02:56 PM
This isnt very scientific but my power steering pump feels harder to turn by hand than the water pump. I know that with increase engine speed the parasitic load is probably not linear, but I would think the water pump probably takes less than the power steering. ------------------
'68 coupe 289 C code
66 heads, edel 600cfm carb, performer intake, dual exhaust
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Dynoram
Journeyman Posts: 27
From: long island NY
Registered: May 2003
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posted 05-30-2003 09:21 PM
We got 2 tenths by using a csi pump in a 90 notchback with a stroked 302 . Not too shabby i was always a firm disbeliever in electric pumps especially on street cars but now im thinking a little more csi claims there pump was run for 5500 constant hours durring tests .[This message has been edited by Dynoram (edited 05-30-2003).]
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