If you already built your AWIC loop, you could just test by measuring how much flow goes into a bucket per certain amount of time.

The Pressure vs. Flowrate curves of the pumps will tell you what they're capable of. Finding the P-Q curves for the intercooler and heat exchanger might be more difficult though. If you could find them then you could calculate a rough real world flow rate.

If you already built your AWIC loop, you could just test by measuring how much flow goes into a bucket per certain amount of time.

The Pressure vs. Flowrate curves of the pumps will tell you what they're capable of. Finding the P-Q curves for the intercooler and heat exchanger might be more difficult though. If you could find them then you could calculate a rough real world flow rate.

Just had a thought… do you think hooking up a cheap flow gauge in line would be an accurate way to test the effectiveness of one pump versus another? I’m specifically interested in the Bosch cobra versus the brushless Davies Craig.

https://www.amazon.com/CGOLDENWALL-E..._id=3206433011

i can't figure out how i'd measure it into a bucket while replenishing the suction side haha. Maybe if I had a helper re-fill my reservoir while I was measuring the pressure side...

I know I've looked at the flow charts under pressure a few times. The davies craig flows quite a bit better under higher pressure. the thing is I don't know how much pressure or head there is in the system. Basically trying to justify the cost of the new pump

The Bosch Cobra is an OEM spec'ed pump. I'm sure it's fine for most reasonable duty.

I tend to like overkill setups, so I'd probably splurge on the pump.

Hi thanks, yeah I think I will just pull the trigger and try it eventually haha

I looked again and the big thing seems to be that under pressure the Davies Craig out performs it by a lot. At ~200hpa it's not a big difference - ~1500lph vs ~1800 lph. 200hpa is 2.9 psi. I have no concept of what sort of resistance is in the system though.

But at 450hpa the Bosch at 500 lph and the Davies Craig is at 1200+ lph. If we are to believe the data sheets and if I converted them correctly! That is 6.5psi.

Even if the system resistance is only 150 hpa, I think it's a ~20+% improvement in flow on paper.

I've got a Type 13, but I've got a fairly large radiator out in front with lots of 90 degree bends....

Bosch cobra


EPB40

Been doing a bit more research and apparently this pump is a little more expensive but flows a lot more. Really hard to compare these flow ratings without knowing the resistance of the system, but seems like the Pierburg flows the same under PRESSURE, what these other pumps do at 0 psi free flow. These are pumps used in BMW, Audi, etc. I'm assuming for their air water intercooler.

https://tecomotive.com/store/en/wate...0-3-water-pump

1.1bar and up to 60Lpm is a strong pump. I'm sure that would do the job. Any good heat exchanger should only have a couple psi differential for the water, so that pump should do nicely.

Super curious to see how it’d affect IATs. Apparently this (on paper) blows the Bosch one out of the water. Not yet sure how you mount it….

Regarding system pressure , by the time you add in the radiator and like 6 90 degree bends, wouldn’t that add quite a bit of resistance in the system?

I run the Bosch Cobra pump on my 6.0 LSA. Monte Carlo SS(That is a 700 hp supercharged LS motor for you non-Chevy fans) It flows nice and isnt very loud at all when using the rubber mounts.

Actually I use a Meziere pump, which flows 20 Gallons per minute

Is this the same thing as the Joe Cell?

Update bump!