Header Tank Mod Water Pump Combination

This one has given me good service in the came application….

https://www.stewartcomponents....-400m-stage-1-16143/

I was able to get it from Summit (with no shipping on orders of $99 & over…  Not sure if that’s still a thing!)

Rocky

Hi Rocky,

Thank you for the info.  This pump has the same fittings as my Flow Kooler.  Do you know which of the top fittings are connected to the bottom of your overflow tank?

Thanks Again!

John

Hey John….

It’s been a long time since I set this up…. AND I’m in Ohio, and my car is in Arizona, but…

I think the two inputs on the pump body are suction, and the one on the block is an output (heater supply).

Someone will let us know if I am smoking crack…  You may have everything you need  with your current water pump.

This came from the second or third page of my 5357 build thread… You can find it with a quick search on 5357.

Good luck -

Rocky

Rocky is correct. this is a pic of my Flow Kooler in the car. I have not used the second port for the tank mod but that is on the schedule for this winter. The heater hose is connected to the nibble that came on the pump. The plug will be for the tank mod.

Ken

Gentlemen,

Thanks a million for the pics.  I just dropped the new engine in a few hours ago so I'm going at reconnecting the new water tubes and 25 hose sections.

Rocky  if/when you're in Arizona beers are on me.  I'm in Carefree/N. Scottsdale area.

Best Regards,

John

#2551

Maybe it would be worth a call to Flowcooler, or Stewart…

I think we all agree the fitting on the block is an “output”, because the pump is sucking water from the lower left main hose from the radiator, and injecting it into the engine block.  The heated water then comes out of the block to the swirl tank through the thermostat housing.

I know for a fact that my engine hasn’t overheated in 5-6 years (or ever, since I set it up).  

So either my overflow tank isn’t under suction, or I have two “outputs” feeding my heater core.

I think the angle of the blades (and of course, direction of rotation) inside the water pump would be an important factor.

It is hard to think that two connections within ~3” of each other within an open chamber can behave vastly differently…  

A picture of the back side of the pump (with blades) might tell the tale… if there is a divider between those two ports on the pump, I might be more convinced…

Chuck

I drew my conclusion from the "Radiator Choices - Cooling System Info" by George P. I asked this exact question.

George P

@haydude posted:

both have TWO threaded ports for the pump suction, one is needed for the heater core, the second port makes a ideal place to plumb the header tank.

Ken

12/11/14 4:08PM

I am now thinking that it seems more logical for both ports to be suction ports.

Just wish I could find a definitive source to actually confirm that.

Larry

Here's a pic I found on the net.

John

So here’s the timing cover that fits under the water pump.  It appears the water flung out of the impeller goes into the “ears”, and then into the block through the holes in the timing cover.

Good Info, I feel more confident now.  I had a call and email into Flow Kooler last week but no reply.  I will try again Monday and post any info they share.

Thanks,

John

#2551

Both of those connections are on the suction side of the pump.

I just spoke with Flow Kooler and the only info they had is that one connection goes to the heater and the other is a bypass that can be blocked off in not needed.  I'm going with the consensus of both being suction.

Thanks,
John

#2551