Cold air delivery to a top mounted IC
27 August 2003, 07:48 PM
#31
Mark, what are you doing? Those Kumho's will be quicker than the IC though a lot more expensive. Don't know how you do this in the street.....good luck to you!
Local clubbie hillclimb this weekend, but I have an EVO 5 @440 bhp in the class........Going to hope the demon hoselok spray nozzels and ice cold water help, and those tyres of course.
Regards, Graham.
Local clubbie hillclimb this weekend, but I have an EVO 5 @440 bhp in the class........Going to hope the demon hoselok spray nozzels and ice cold water help, and those tyres of course.
Regards, Graham.
27 August 2003, 09:11 PM
#32
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Carlos, thanks for the tip! On a hillclimb I don't think the engine will demand a constant cooling of CO2, and the USA kit has sensors to trigger the charge on inlet temp.
I used to drag race here in the early 70's so understand the demand will be different to hillclimb (I think). A typical UK hillclimb is all of 50 seconds long with lots of on/off accelleration in relatively short blasts.....so i may be wrong!
Graham.
I used to drag race here in the early 70's so understand the demand will be different to hillclimb (I think). A typical UK hillclimb is all of 50 seconds long with lots of on/off accelleration in relatively short blasts.....so i may be wrong!
Graham.
it will inmediatly lower the temp of the TMIC and the inlet temps, and when you start you will feel the car like a cold winter day Good luck on your next event !!!!!
Carlos H.
28 August 2003, 04:01 PM
#34
Hi guys.
Carlos, that is exactly my problem. I have to wait in the que to the start line for about 10 mins with a hot engine. If the cars in front of me have a problem (they fall off the track) then it is longer still. Even if I stop the engine it all soaks through in the end. This is where CO2 is good as you say, instant quench, and where I originaly started with air con air which is cold and in good supply and instant!
Some hills have long flat-out straights and the boost is full-on for maybe 20 secs, Need to cool the IC as much as possible.
When all is said and done, just what gains are there? The car on a cold morning (like going to the track) is ballistic, when well cooked as above, somewhat duller, maybe 20 bhp's worth? Would you agree?
Mark, have no pics that can go on this web, but all the hills now have a general site. My Motor club's is www.hdlcc.com. That might interest you, and get you on those Kumho's and come out racing next year! I only know to about 5 Scoobies hill climbing, the EVO is more potent/popular/powerful. Rats!
I'm starting to think about new turbo and bigger injectors as I've done it all to the chassis now!(better think about the box too....)
Nice talking to you all, Regards, Graham.
Carlos, that is exactly my problem. I have to wait in the que to the start line for about 10 mins with a hot engine. If the cars in front of me have a problem (they fall off the track) then it is longer still. Even if I stop the engine it all soaks through in the end. This is where CO2 is good as you say, instant quench, and where I originaly started with air con air which is cold and in good supply and instant!
Some hills have long flat-out straights and the boost is full-on for maybe 20 secs, Need to cool the IC as much as possible.
When all is said and done, just what gains are there? The car on a cold morning (like going to the track) is ballistic, when well cooked as above, somewhat duller, maybe 20 bhp's worth? Would you agree?
Mark, have no pics that can go on this web, but all the hills now have a general site. My Motor club's is www.hdlcc.com. That might interest you, and get you on those Kumho's and come out racing next year! I only know to about 5 Scoobies hill climbing, the EVO is more potent/popular/powerful. Rats!
I'm starting to think about new turbo and bigger injectors as I've done it all to the chassis now!(better think about the box too....)
Nice talking to you all, Regards, Graham.
28 August 2003, 04:21 PM
#35
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Hi guys.
Carlos, that is exactly my problem. I have to wait in the que to the start line for about 10 mins with a hot engine. If the cars in front of me have a problem (they fall off the track) then it is longer still. Even if I stop the engine it all soaks through in the end. This is where CO2 is good as you say, instant quench, and where I originaly started with air con air which is cold and in good supply and instant!
Some hills have long flat-out straights and the boost is full-on for maybe 20 secs, Need to cool the IC as much as possible.
When all is said and done, just what gains are there? The car on a cold morning (like going to the track) is ballistic, when well cooked as above, somewhat duller, maybe 20 bhp's worth? Would you agree?
Carlos, that is exactly my problem. I have to wait in the que to the start line for about 10 mins with a hot engine. If the cars in front of me have a problem (they fall off the track) then it is longer still. Even if I stop the engine it all soaks through in the end. This is where CO2 is good as you say, instant quench, and where I originaly started with air con air which is cold and in good supply and instant!
Some hills have long flat-out straights and the boost is full-on for maybe 20 secs, Need to cool the IC as much as possible.
When all is said and done, just what gains are there? The car on a cold morning (like going to the track) is ballistic, when well cooked as above, somewhat duller, maybe 20 bhp's worth? Would you agree?
..... don't know how much power you loose because of increased air inlet temps, but definetly considerable power is lost.Since your car is a STi ver 3, then it probably has a IHI VF23 turbo, which is already a good turbo for what you are doing, probably what you would benefit the most, for the type of competition you have would be something like a bolt-on programable ECU like a LINK (in case you can find one with antilag even better), or if your bugget is tight, then you could also try using race gas, even with the stock JECS ECU it does make a difference. Just make sure to RESET the ECU once you have put some race gas on your fuel tank.
Carlos H.
28 August 2003, 05:12 PM
#36
Carlos, thanks for this, I think you are right, and from the kit i saw on the web, the plumbing can be arranged to cover the matrix and the end caps. My current Ic is a very thick core (100mm) unit with thin end caps so will chill quickly. I also like the easy sounding installation with auto triggering when the temperature hits the limit.
Thanks as ever for the input!
Graham.
Thanks as ever for the input!
Graham.
22 September 2003, 03:50 PM
#38
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C02 liquid spray on the intercooler would be a good one, although N20 is cheaper and works more effectively. A small bottle should be light enough for the weight penalty to be overcome by the improved temps
10 October 2003, 03:03 PM
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Ive been following thread with great interest as somthing I would like to do myself for street use rather then a water spray. The only worry I had was availability of the CO2 and the weight of the bottles.
Just spoken to BOC gas suppliers who do next day bottle delivery and there prices dont seem too bad.
£7.50 for 6kg of CO2 and then you have to rent the bottles of them at about £33 a year if I got it right off the lady.
That sounds pretty good when u look at a 11lb bottle of NO2 costs £40 and I think u provide your own bottle.
Does anyone know how long 6KG of CO2 or NO2 for that matter would last? also if anyone knows the weight of a 6KG 11lb bottle?
Just spoken to BOC gas suppliers who do next day bottle delivery and there prices dont seem too bad.
£7.50 for 6kg of CO2 and then you have to rent the bottles of them at about £33 a year if I got it right off the lady.
That sounds pretty good when u look at a 11lb bottle of NO2 costs £40 and I think u provide your own bottle.
Does anyone know how long 6KG of CO2 or NO2 for that matter would last? also if anyone knows the weight of a 6KG 11lb bottle?
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