The air/water intercooler thead - Page 15

Voodoo Rufus · 08-18-2022, 11:09 AM

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.

* Registered users of the site do not see these ads.

Voodoo Rufus · 08-18-2022, 11:10 AM

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.

pcampbell · 08-18-2022, 11:14 AM

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

pcampbell · 08-18-2022, 01:46 PM

Quote:

Originally Posted by Voodoo Rufus

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.

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

Voodoo Rufus · 08-18-2022, 01:52 PM

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.

pcampbell · 08-18-2022, 02:31 PM

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

pcampbell · 02-10-2023, 03:43 PM

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

Voodoo Rufus · 02-10-2023, 03:57 PM

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.

pcampbell · 02-11-2023, 06:24 AM

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?

witman69 · 07-18-2023, 01:37 AM

Quote:

Originally Posted by Titter

is too much flow from the pump a bad thing?

im considering the bosch cobra pump as an upgrade for reliability. the base pump offered in the frozenboost kits looks really low quality.

problem is the cobra pump flows 314 gallons per hour while i see most ppl here running 200-300 litres per hour tops.

will this be an issue?

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.

Gluis · 07-18-2023, 10:09 AM

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

2tough3u · 07-28-2023, 01:46 PM

Quote:

Originally Posted by bwrx03

Heres a few pics.

Please forgive the crappy pics and i know my paint sucks. Thats what happens at the track.

Is this the same thing as the Joe Cell?

frogmonk · 03-16-2024, 05:22 PM

Update bump!

02-11-2023, 06:24 AM	#359
pcampbell Scooby Specialist Member#: 437670 Join Date: Jan 2016 Location: VT Vehicle: 2005 2.5 SC OB	The air/water intercooler thead 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? Last edited by pcampbell; 02-11-2023 at 06:34 AM.

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08-18-2022, 11:09 AM	#351
Voodoo Rufus Scooby Newbie Member#: 151528 Join Date: Jun 2007 Chapter/Region: BAIC Location: Bakersfield, CA Vehicle: 2015 STI Launch Edn. WRB!	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. * Registered users of the site do not see these ads.

08-18-2022, 11:10 AM	#352
Voodoo Rufus Scooby Newbie Member#: 151528 Join Date: Jun 2007 Chapter/Region: BAIC Location: Bakersfield, CA Vehicle: 2015 STI Launch Edn. WRB!	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.

08-18-2022, 11:14 AM	#353
pcampbell Scooby Specialist Member#: 437670 Join Date: Jan 2016 Location: VT Vehicle: 2005 2.5 SC OB	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

08-18-2022, 01:52 PM	#355
Voodoo Rufus Scooby Newbie Member#: 151528 Join Date: Jun 2007 Chapter/Region: BAIC Location: Bakersfield, CA Vehicle: 2015 STI Launch Edn. WRB!	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.

08-18-2022, 02:31 PM	#356
pcampbell Scooby Specialist Member#: 437670 Join Date: Jan 2016 Location: VT Vehicle: 2005 2.5 SC OB	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

02-10-2023, 03:43 PM	#357
pcampbell Scooby Specialist Member#: 437670 Join Date: Jan 2016 Location: VT Vehicle: 2005 2.5 SC OB	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

02-10-2023, 03:57 PM	#358
Voodoo Rufus Scooby Newbie Member#: 151528 Join Date: Jun 2007 Chapter/Region: BAIC Location: Bakersfield, CA Vehicle: 2015 STI Launch Edn. WRB!	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.

07-18-2023, 10:09 AM	#361
Gluis Scooby Newbie Member#: 245584 Join Date: Apr 2010 Chapter/Region: International Location: Margarita Island, Venezuela Vehicle: 07 Impreza WRX STI	Actually I use a Meziere pump, which flows 20 Gallons per minute

03-16-2024, 05:22 PM	#363
frogmonk Scooby Specialist Member#: 74489 Join Date: Nov 2004 Chapter/Region: MWSOC Location: Chicago Vehicle: '04 FXT/‘05 Baja T '71-FF1/14 WRX	Update bump!