What would the GPM rate of a B18 water pump be in respect to rpm?

 

Also taking into account pressure which would depend on fluid temp, correct? Or is there a standard "Flow Velocity" that can be used?

 

Don, I've never seen any numbers on this.
Probably wouldn't really be dependent on temperature either since the water pump is driven by the timing belt.

Thinking of going electric?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zygspeed &raquo;</TD></TR><TR><TD CLASS="quote">Don, I've never seen any numbers on this.
Probably wouldn't really be dependent on temperature either since the water pump is driven by the timing belt.

Thinking of going electric? </TD></TR></TABLE>No electric. I was just replacing my coolent hoses and was wondering why they choose the size hose they did. Basically trying to look into why my half-radiator full-race setup worked so poorly. I know the water pump gpm would be rpm dependent, but formulas for hose flow rates need supply pressure and coolent psi it dependent on temp.

 

I also never heard of these #'s... Interesting that you had problems, good luck on the fix

 

I don't think you'll get an answer on this because the flow rate won't be perfectly linear with respect to RPM because of slippage around the pump impeller. This would be very difficult to measure exactly. The only people that would have an answer even close would be Honda powertrain engineers, and they surely will not share this info. You could try to roughly calculate it by determining the swept volume by rpm, then guessing at the slippage

my guess at why your half radiator setup worked poorly is that it just wasn't efficient enough at removing heat. You could measure this by comparing inlet and outlet temps of the radiator on well functioning cooling systems vs. yours. You'll need a 2 channel thermocouple unit, or some other form of data acquisition.

 

(Homer Voice) mmm...sweep volume.
Time to break out the fluid mechanics text book. Oh yeah, I think I burned that book....