Nissan/Infiniti Tech SR20DET? RB26DETT? VQ35DE? What's it all mean? Find out here!

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Old Oct 26, 2010 | 06:55 AM
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New wheels + centers, tires, and all the parts for a front disc conversion have been found. I'll probably order most all of it later this week.
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Old Oct 26, 2010 | 06:59 AM
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my oil pump will be here in 2 days. thank god.
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Old Oct 26, 2010 | 08:14 AM
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Originally Posted by Epstein
Yeah, I would definitely look at production-side parts for the heat exchangers. ZR1, Ford GT, etc. When I first read about this, the only OEM air-water setups were in obscure Subarus and the then-current ST205. Now you can go to the local parts counter and buy parts OEM parts for setups that support real power.

Cooling with a heat pump is a pretty neat idea. I need to break out the thermodynamics book though. If Ford will only run it for 10 seconds or so, that probably means that it's not that efficient. But if you look at something like drag racing, it would be cool to have a system where you could temporarily use the AC to freeze your reservoir, switch it off so there's no power draw, and then have 20-40-60 seconds of super low IATs for your pass. An extension of that... use a Prius electric AC compressor dedicated to the reservoir and remote mount all that stuff. And then... leave room in the reservoir for drinks!
I don't think the CoP is good enough on automotive a/c systems for it to be a full time solution to dropping iat's like an air to air or air to water heat exchanger.
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Old Oct 26, 2010 | 12:02 PM
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Originally Posted by Epstein
Yeah, I would definitely look at production-side parts for the heat exchangers. ZR1, Ford GT, etc. When I first read about this, the only OEM air-water setups were in obscure Subarus and the then-current ST205. Now you can go to the local parts counter and buy parts OEM parts for setups that support real power.

Cooling with a heat pump is a pretty neat idea. I need to break out the thermodynamics book though. If Ford will only run it for 10 seconds or so, that probably means that it's not that efficient. But if you look at something like drag racing, it would be cool to have a system where you could temporarily use the AC to freeze your reservoir, switch it off so there's no power draw, and then have 20-40-60 seconds of super low IATs for your pass. An extension of that... use a Prius electric AC compressor dedicated to the reservoir and remote mount all that stuff. And then... leave room in the reservoir for drinks!
wouldnt you see more noticeable gains from cooling the fuel than all that work trying to cool the air for only a few seconds

ive seen some drag guys put a coffee can, water jug ect. in the passenger floor board and have copper hose spooled up inside of it fill it with ice and then attach your fuel line to it.
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Old Oct 26, 2010 | 12:11 PM
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You can solve all these problems by running alcohol.
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Old Oct 26, 2010 | 12:45 PM
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Originally Posted by LongFellow
You can solve all these problems by drinking alcohol.
fixed
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Old Oct 26, 2010 | 12:57 PM
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Originally Posted by squbafreak15
wouldnt you see more noticeable gains from cooling the fuel than all that work trying to cool the air for only a few seconds

ive seen some drag guys put a coffee can, water jug ect. in the passenger floor board and have copper hose spooled up inside of it fill it with ice and then attach your fuel line to it.

You can store (or 'remove') a lot more heat in 500cfm of air than you can in 2000cc/min of fuel. About 10 times more, to be exact.

Coffee can BS is a waste.
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Old Oct 26, 2010 | 12:59 PM
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Originally Posted by 170k240
I don't think the CoP is good enough on automotive a/c systems for it to be a full time solution to dropping iat's like an air to air or air to water heat exchanger.
Yeah man, don't even bother reading his post.

He's saying spend a couple minutes cooling a few gallons of water in the reservoir of the air to water intercooler, then going for a 10 second pass.

That would work. You'd also have to carry 100lbs of A/C equipment down the strip. They say 100lbs is good for 0.1sec. Not sure you could find 0.1sec from 20deg colder air.
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Old Oct 26, 2010 | 01:04 PM
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Originally Posted by Z28ricer
I believe a ford or two has something where it will use the a/c setup to cool the charge air for something like 10 seconds ?
That heat has to go somewhere. In the case of most A/C setups (not familiar with the one you're discussing), it dumps before the radiator. Then, you're heating the engine coolant. That's why they limit you to 10sec.

The A/C system isn't really set up to move the kind of BTUs that you'd want. That's why 120 seconds of cooling another medium (water) for 10 seconds of run makes sense.
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Old Oct 26, 2010 | 01:18 PM
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Originally Posted by greenman100
That would work. You'd also have to carry 100lbs of A/C equipment down the strip. They say 100lbs is good for 0.1sec. Not sure you could find 0.1sec from 20deg colder air.
Yeah, I was considering what extra speed/hp you'd get from a colder IAT. It'd have to be a setup where you're on the edge of detonation and you need that cool air to make it work. So the difference would be running or blowing up, not a few % hp. Kinda like what people do with high boost meth setups.

An air-water setup is going to be heavier than air-air to begin with. I'd just use a small res and big fan on heat exchanger to keep it from heat soaking at the line/stopped.

Or what Dan said. And make everyone's eyes burn as you drive by.
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