Understanding Intercooling, Charge-Coolers, Heat Exchangers and Circulation Pumps
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From: Welwyn, Herts, UK
2006 S600
I'm pretty sure the 24v pumps are different to the 12v pumps. eBay is full of 24v pumps that no-one wants. The inverter would work - that's what they're for, but its an additional complication.
nick
nick
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2004 S600
http://www.powerstream.com/dc2.htm
They have a fixed 24V version that is a bit cheaper but I still think you'd need two. The great thing is they have an ignition input trigger to turn it on so you don't have to use relays or whatnot.
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If you look at my chart above, it predicts the flow would go up from 14 to 17 lpm, which is 21%.
Nick
Last edited by Welwynnick; Apr 30, 2016 at 06:21 PM.
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Actually, one of the boosters MIGHT handle it. 276 watt continuous rating = 11.5 amps at 24V. The EMP PDF says the 24V pump draws 15A peak current. That would be with max load, so 25psi of back pressure. So actual amperage in our system may be quite a bit lower. I bet one boost converter could handle it with additional fans.
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From: Tbilisi , Georgia
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I am looking at the PDF. Page 14 has the voltage requirements. The 12V pump is 9-16V input, and the 24V pump is 18-32V input. Where you were seeing the pumps at 14v and 28v is on the flow chart page 9. Those charts are representative of the 12V pump at 14V, and the 24V pump at 28V.
I do not think they would bother to make distinctly separate 12V and 24V pumps if it was truly completely flexible on voltage.
I do not think they would bother to make distinctly separate 12V and 24V pumps if it was truly completely flexible on voltage.
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2004 S600
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From: Tbilisi , Georgia
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So you bought that emp pump from ebay?? I am gonna buy it tomorrow and make it work
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has anybody had experience with these pumps? ( http://daviescraig.com.au/electric-water-pumps ) scroll down and you will see products this EWP130 that comes in 12v and 24v versions and has gpm rate of 30.4 gallons
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Not sure what you mean but I like the idea that they use them in Black Series cars as their preferred OEM IC water pump. And with the plug mod I have it literal plug and play without soldering/cutting on the OEM cable harness.
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has anybody had experience with these pumps? ( http://daviescraig.com.au/electric-water-pumps ) scroll down and you will see products this EWP130 that comes in 12v and 24v versions and has gpm rate of 30.4 gallons
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2004 S600
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2004 S600
I mean that on Nick's flow chart compilation, the CWA-100's performance is dramatically eclipsed by the WP29. However, I'm sure the WP29 draws a heck of a lot more current and the stock wiring probably wouldn't even handle it. Also, the real world system performance with the flow difference from the 100 vs the WP29 might not even change a measureable amount at the horsepower levels we are generating so it's probably a pretty good budget upgrade without going overboard.
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From: Tbilisi , Georgia
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see the ewp130 flow vs pressure chart I cut out that chart from big pdf document and its a little bit blurred
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2004 S600
There are some 12v to 24v converters online what if we use those but I dont understand why that guy from ctsvowners forum said that he used 24v wp29 with 12v I regitsered there and asked him for some input already I also sent questions to emp-corp.com and stewartcomponents.com
see the ewp130 flow vs pressure chart I cut out that chart from big pdf document and its a little bit blurred
see the ewp130 flow vs pressure chart I cut out that chart from big pdf document and its a little bit blurred
Yeah, you could use a converter but you need to look at the continuous current rating. If the 24V pump really draws 15 amps, you need to really plan for 360w continuous to be safe if the pump operates at or near max current. I think you'll find a converter that will put out that much continously, plus the cost of the 24V pump will add up to more than the cost of a new 12V pump in the first place.
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2004 S600
Also, I mean some companies advertise the modified ones that have a different speed/current limit. Like the lingenfelter pump. I had seen it discussed somewhere (maybe even in this thread) about it being something relatively simple to get the extra performance out of it without buying their more expensive pump, but don't remember where I saw that.
http://www.lingenfelter.com/product/...l#.VyVaLNQrKt8
http://www.lingenfelter.com/product/...l#.VyVaLNQrKt8
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I don't think so. I think they are saying that the pump is available in both motor configurations. I am pretty positive they are different motors and are not able to be run on that different a voltage without performance or longevity concerns.
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From: Tbilisi , Georgia
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Lets wait when emp will answer my question if it multivoltage or not I hope that it is because I will buy it tomorrow if they answer me or not
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I also don't have a wiring harness for it, so I'll probably have to solder leads onto the pins or something. Don't count 100% on me getting around to it...but I'll try it if I have time.
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From: Welwyn, Herts, UK
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There's a lot of discussion of DaviesCraig pumps early in this thread. They have similar characteristics to the Meziere WP136, Johnson CM90 and Jabsco 50840, which are engine cooling pumps, and tuned for a different system resistance. They have too high flow and too low pressure for IC systems.
Nick
Nick
