Electric water pump drive problem

theman440 · 10-15-2019, 11:00 PM

I had the exact same set up with a metal flex fan for 10 plus years on my bracket car and never had a problem. I, like you discovered recently that having it drive the fan is a no-no.

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.

10-15-2019, 11:00 PM	#1
theman440 Member Join Date: Apr 2013 Location: Fabulous Las Vegas Posts: 114 Likes: 29 Liked 24 Times in 13 Posts	Re: Electric water pump drive problem I had the exact same set up with a metal flex fan for 10 plus years on my bracket car and never had a problem. I, like you discovered recently that having it drive the fan is a no-no. __________________ Jeff Dudgeon '66 Coronet #10771 - bracket puke "the Flying Brick"

10-16-2019, 12:04 AM	#2
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,311 Likes: 315 Liked 1,102 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	#3
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,731 Likes: 2,794 Liked 2,469 Times in 695 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	#4
Ralph A Powell Member Join Date: Oct 2017 Location: Bay City Texas Posts: 387 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	#6
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	#7
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.