Stupid question.

The manual says 2.64 gallons per minute @ 1,000 rpm.

Is it safe to assume then, that the GPM reach 13.2 GPM @ 5,000 rpm? Or would the radiator restrict flow?

I'm looking to plumb in a heat exchanger for hot water and need to spec it correctly to not restrict flow.

 

No, because restrictions increase as speed increases.

Just dead reckoning, I'd cut that number in half and then over-spec the exchanger a little. Maybe for 8 gal

What's the heat exchanger for out of curiosity?

 

Yes, definitely parasitic losses due to drag and obstruction. It might not be half, however, I agree with Alex's recommendation to assume half. It should be about spot on, or slightly off in your favor, for your calculations.

 

Wait...I just bypassed my heater core in the engine bay, did I just cause a potential downstream impact (besides no heat in the cabin)?

Sorry if I derailed your question Jeff

 

Perfect, the 10 plate heat exchanger will do, then. B3-12A 10 Plate Heat Exchanger with M5-.08 Mounting Studs [HX1210] | DudaDiesel Biodiesel Supplies

It's rated for 6 gpm without restricting PSI.

I'm hooking up an onboard water/shower system


edit: fridaynight, I think that could cause in increase in pressure (puts more stress on the coolant cap), and of course increase in coolant temp

 

Also, what's the ID of the heater hose? I've read that its different on the heater rail vs the firewall ports?

 

no, that won't cause any flow issues since its not a part of the main path.

 

Confirm, bypass is okay. Just no heat.