Water to air Intercoolers

[Stealer Of Souls]

What Davies Craig pump are you getting for $200? If it's one of those small booster pumps, I'm not sure if I'd bother because I don't think they have a flow rate that is even anywhere near the subaru/st185 unit. If it's the EWP85, then the flow will be heaps but I will warn you that I've had massive headaches with them - they are very prone to leakage in the seal between the motor and the pump unit. If it's the new EWP110 - which is completely sealed - then awesome, that's a lot of pump for $200 and will do the job perfectly.

Hmmm.
EBP - Probably not for this application. According to the numbers it looks like it won't have the flow capabilities. But it might be okay... Hard to know...

EWP80. Malcolm, did you have an "old" or a "new" one. I have a 3rd gen one on my car, and have done for a few years (albeit low usaged vehicle). But it has made it to half a dozen track days and probably about 12000km of city driving with absolutely no issues.

[Malcolm]

The ones I've had experience with have all been on FSAE cars
#1 - In 2006 the one we had seized - circlip holding the motor to the pump jammed up

#2 - Can't remember what the story was with this - I think it leaked but I remember buying it then still needing to buy another before the competition

So we bought another one at the end of '06...
#3 - worked well I think, don't recall it dying

#4 - Purchased in 2007, first time we put water in it, it leaked. Swapped in #3 and put #4 aside for dyno duty

#5 - Purchased in 2008, leaked. I pulled it apart and smeared some silicone grease around the o-ring and that didn't help, so we bought #5

#6 - Purchased at the end of 2008, don't think it's leaked yet


I should note that the lives of these pumps may have been a bit tougher than you might see in a road car - sometimes tightly packaged between other components that might have stressed them a bit, and they may have experienced more vibration due to stiff suspension, rigid mounted engines etc, but I have still been, on the whole, very disappointed in them (after #4 we were tempted to make our own pumps). They're good dudes though (I've been to their headquarters twice to buy #3 and #5 and spoke to a Mr Davies who was very enthusiastic and generous)

The newest one looks like a much better unit, saw them when we went to the HQ in November last year - apparently they've phasing out the old EWP's and only going to offer this latest one - it's a single piece unit that's fully sealed and has the flow of the old EWP110's but is smaller/lighter than the EWP80s

[thegreatestben]

Ok so avoid Davies craig by the sounds.
Hmm.

That pump on trademe from the CBR has 3/4" fittings, would something like that be any good, what would be the normal rate that they are designed to operate at?

Thought just slam it on the inlet side of the motor with a factory water pump pulley or something?

[Malcolm]

I wouldn't necessarily say to avoid them, I'm sure they'd honour a warranty if you got one and it failed.

The heat being rejected by a CBR900 will almost certainly be greater than that rejected from your intake charge, so I think the flow rate should be fine.

[thegreatestben]

Kinda keen on the bike pump considering it won't be noisy like an electric unit, it would increase in flow as the engine speed increases and it's fairly cheap. Might just buy one and try it out.

Cheers for your advice Malc + others, I might be asking more questions shortly

[Stealer Of Souls]

The ones I've had experience with have all been on FSAE cars
#1 - In 2006 the one we had seized - circlip holding the motor to the pump jammed up

......

The newest one looks like a much better unit, saw them when we went to the HQ in November last year - apparently they've phasing out the old EWP's and only going to offer this latest one - it's a single piece unit that's fully sealed and has the flow of the old EWP110's but is smaller/lighter than the EWP80s

Wow.. Yeah. I guess either I got lucky, you were unlucky or they just don't like those running conditions.

I got mine way back in 2005 or 2006. Fitted to 4AGE in an AE86. No issues yet.

[thegreatestben]

I ended up purchasing the bosch unit from www.frozenboost.com Was $222 incl. delivery



This water/air intercooler pump is designed for circulating water in water/air intercoolers.

Unlike other bilge pump-based solutions available, this pump is designed by Bosch and Ford specifically for water/air applications.

This pump is Bosch part number 0 392 022 002 and is used in many of the supercharged Mustang Cobras and supercharged Mercedes.

This is an OEM pump. It ships with no documentation. Please check below for pump specifications from Bosch; these are the most detailed specifications available:



This information is directly from Bosch. Unit conversion shows that this pump flows 317 GPH; any seller who advertises differently is incorrect.

VERY IMPORTANT! We ship these pumps with a wiring harness adaptor that will give you positive and negative wires to connect the pump electrically. Most sellers of this pump just ship it with the socket and you have to find your own adaptor. The adaptor can cost up to $20 plus shipping by itself!

The Bosch Cobra Water to Air Intercooler Pump is designed for a 16 gauge wire, which this part has. Most connectors you will find being sold for this pump are fuel injector connectors with 18 or 20 gauge wire which may result in poor pump performance, voltage drop, or dangerously hot wires.

[levinguy]

very keen to see how the subaru radiator suits you. i have the same radiator and was going to upgrade, but if it works for you why bother.

also wouldn't mind seeing how you mounted it.

and on the noise subject, my st205 pump is pretty quiet, it doesn't annoy me. but then i do have a walbro fuel pump which is horrible to listen too (well it would be everyday)

[thegreatestben]

Only ordered the pump today, the hose is sitting at work awaiting purchase.
Need to have the subaru unit modified to 3/4".

We are doing welding at course in two weeks so might ask to have it done there.

This car is gonna be a courage tester I think

[Mr Revhead]

what part of 7agte aw11 made you think it wouldn't be a courage tester?