Electric water pump drive problem

Rory McNeil · 10-16-2019, 12:04 AM

Kelly, do you have a new or used water pump? On my own 302 Ford, I found a new water pump had quite a bit of drag, so I installed a used pump, which spun much easier. As for a fan, considering the electric water pump drive doe not spin all that fast anyhow, I doubt a mechanical fan on the water pump would spin fast enough to very effective, so I went with an electric fan instead. Also, its not good to have the toothed belt very tight, as it can lead to premature wear of the electric motor. By the way, the electric motor used by most drive kits, is a Ford heater fan motor, same as most 70s Ford cars and trucks.

GTX JOHN · 10-16-2019, 03:18 AM

We have never had any issue.....We have a Alum. fan on several of our
cars. be sure belt is not very tight. Our Mopar pumps turn very easy or
we replace them. we run 14 tooth pulley instead of standard 10 tooth.

Ralph A Powell · 10-16-2019, 06:29 AM

Most of the Drag you feel on the new pumps without fulid is the seal creating the Drag.

Shadylane · 10-16-2019, 08:52 AM

Quote:

Originally Posted by Ralph A Powell

Most of the Drag you feel on the new pumps without fulid is the seal creating the Drag.

Yep, I understand that most modern water pumps use mechanical seals. The pump was new when installed.
I always keep the belt loose.

Mark Ugrich · 10-16-2019, 09:08 AM

I’ve used an electric water pump drive with a small aluminum flex fan for years. Never had a problem. I believe Moroso offers a different drive pulley that will change the pump speed.

Jeff Stout · 10-16-2019, 10:29 AM

Kelly I have a new Moroso motor in a box I would sell cheap. I live north Phoenix and work central Phoenix.

curtis reed · 10-16-2019, 01:59 PM

You can get a motor that has 4 posts with 2 of them being the same center to center as the Moroso 2 post motor but is a more powerful permanent magnet motor from W. L. Walker 918-583-3109 or wlwalker.com

The part number is 18051. This is the company I work for. We sell stuff to test measure or sample oil but I used this motor on a few friend's water pump and they run much faster also. Depending on the input voltage they will run 2100-2250 rpm. It has the same 5/16" shaft. Just grind down the 2 posts that you don't need. Just an option to consider. Looks like they are about $11 more than the Moroso motor.

Curtis

10-16-2019, 12:04 AM	#1
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,311 Likes: 315 Liked 1,103 Times in 301 Posts	Re: Electric water pump drive problem Kelly, do you have a new or used water pump? On my own 302 Ford, I found a new water pump had quite a bit of drag, so I installed a used pump, which spun much easier. As for a fan, considering the electric water pump drive doe not spin all that fast anyhow, I doubt a mechanical fan on the water pump would spin fast enough to very effective, so I went with an electric fan instead. Also, its not good to have the toothed belt very tight, as it can lead to premature wear of the electric motor. By the way, the electric motor used by most drive kits, is a Ford heater fan motor, same as most 70s Ford cars and trucks. __________________ NHRA 6390 STK M/S 85 Mustang

10-16-2019, 03:18 AM	#2
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,731 Likes: 2,795 Liked 2,471 Times in 696 Posts	Re: Electric water pump drive problem We have never had any issue.....We have a Alum. fan on several of our cars. be sure belt is not very tight. Our Mopar pumps turn very easy or we replace them. we run 14 tooth pulley instead of standard 10 tooth. __________________ John Irving 741 Stock 741 Super Stock

10-16-2019, 06:29 AM	#3
Ralph A Powell Member Join Date: Oct 2017 Location: Bay City Texas Posts: 388 Likes: 2 Liked 225 Times in 136 Posts	Re: Electric water pump drive problem Most of the Drag you feel on the new pumps without fulid is the seal creating the Drag.

10-16-2019, 09:08 AM	#5
Mark Ugrich Member Join Date: May 2011 Location: Auburndale,Florida Posts: 220 Likes: 29 Liked 71 Times in 38 Posts	Re: Electric water pump drive problem I’ve used an electric water pump drive with a small aluminum flex fan for years. Never had a problem. I believe Moroso offers a different drive pulley that will change the pump speed.

10-16-2019, 10:29 AM	#6
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,486 Likes: 66 Liked 704 Times in 281 Posts	Re: Electric water pump drive problem Kelly I have a new Moroso motor in a box I would sell cheap. I live north Phoenix and work central Phoenix.

10-16-2019, 01:59 PM	#7
curtis reed Member Join Date: Jul 2011 Location: Kiefer, Ok. Posts: 167 Likes: 63 Liked 125 Times in 59 Posts	Re: Electric water pump drive problem You can get a motor that has 4 posts with 2 of them being the same center to center as the Moroso 2 post motor but is a more powerful permanent magnet motor from W. L. Walker 918-583-3109 or wlwalker.com The part number is 18051. This is the company I work for. We sell stuff to test measure or sample oil but I used this motor on a few friend's water pump and they run much faster also. Depending on the input voltage they will run 2100-2250 rpm. It has the same 5/16" shaft. Just grind down the 2 posts that you don't need. Just an option to consider. Looks like they are about $11 more than the Moroso motor. Curtis