IATs at the track
10-20-2013, 02:11 AM
#21
Ok, so my 32* increase when the starting point is well below ambient is more efficient than an A2A could ever be because the starting point of an A2A is at best ambient temp. Starting point is important, not overall increase. (I just learned this, lol) I hit the 8th mile traps barely at ambient temps, so yes, that's worth the 30lbs of ice and 100 extra overall lbs I gained.
10-20-2013, 04:40 AM
#22
Staging Lane
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Wow Some pretty heated opinions on here ha ha sorry for the pun. I love how passionate some people are about things but if it isn't really constructive I don't see the point. I think I will tap some sensors to test if my intercooler is a problem and I already have a gt55 in the works that should be interesting. Here is the gt55 unit I have scored for a good price. It is a unit recommended to me rather than me running basic diesel units.
10-20-2013, 05:28 AM
#23
Ok, so my 32* increase when the starting point is well below ambient is more efficient than an A2A could ever be because the starting point of an A2A is at best ambient temp. Starting point is important, not overall increase. (I just learned this, lol) I hit the 8th mile traps barely at ambient temps, so yes, that's worth the 30lbs of ice and 100 extra overall lbs I gained.
10-20-2013, 11:20 AM
#24
Ok, so my 32* increase when the starting point is well below ambient is more efficient than an A2A could ever be because the starting point of an A2A is at best ambient temp. Starting point is important, not overall increase. (I just learned this, lol) I hit the 8th mile traps barely at ambient temps, so yes, that's worth the 30lbs of ice and 100 extra overall lbs I gained.
Went 9.04 last night at 151 at 23.8 lbs. 63* ambient. 100* starting point 145* at the end of the run. 3" charge piping. S475 turbo.
Looks like this?
Last edited by Forcefed86; 10-20-2013 at 11:25 AM.
10-20-2013, 11:33 AM
#25
Ok, so my 32* increase when the starting point is well below ambient is more efficient than an A2A could ever be because the starting point of an A2A is at best ambient temp. Starting point is important, not overall increase. (I just learned this, lol) I hit the 8th mile traps barely at ambient temps, so yes, that's worth the 30lbs of ice and 100 extra overall lbs I gained.
10-20-2013, 06:47 PM
#27
Staging Lane
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That is the same sort of cooler I am running, nothing special just a 4" core. I will check with my tuner to see what my iats were on the chassis dyno as we had some serious heat in the cell during the runs. We were running 100F ambients.
10-20-2013, 10:58 PM
#28
I'm sure you mean A2W. Yes I have 1" lines, 34' of them LOL. And It's a rule2000 pump. I'm sure a 3700 would keep it a little cooler, but I'm satisfied with what it does. I can start 30-40 below ambient and hit the traps barely at ambient. I gained roughly 100WHP going from a non intercooled meth injected setup to this.
10-21-2013, 02:50 AM
#29
I'm sure you mean A2W. Yes I have 1" lines, 34' of them LOL. And It's a rule2000 pump. I'm sure a 3700 would keep it a little cooler, but I'm satisfied with what it does. I can start 30-40 below ambient and hit the traps barely at ambient. I gained roughly 100WHP going from a non intercooled meth injected setup to this.
How much water / ice do you have in the system? Do you totally drain the system and refill after each run?
10-21-2013, 03:52 AM
#30
I run an a2w setup. 32* inlet temps at the start of a pass regardless of ambient. 60 or under through the traps regardless of ambient.
Just to throw some data out there:
1000+ rwhp. 2 Garrett 1k hp cores. 1" lines.....or maybe even 1.25", I forget. And rule 3700 gold pump.
Just to throw some data out there:
1000+ rwhp. 2 Garrett 1k hp cores. 1" lines.....or maybe even 1.25", I forget. And rule 3700 gold pump.
10-21-2013, 09:43 PM
#31
What are the water temps after a run? Be interesting to see if the system has heat soaked or if the efficiency of the charge cooler has dropped as the water temp rises. In fact it would be interesting to see how inlet water temps and outlet air temps compare as they warm up. I have heard that some air to water guys end up with quite high water temps post run!
How much water / ice do you have in the system? Do you totally drain the system and refill after each run?
How much water / ice do you have in the system? Do you totally drain the system and refill after each run?
When I want to drain it to make room for more ice, I have a cup in my trunk to just "cup" it out one cup at at a time. Takes a minute or two and is a little messy. LOL. I'll probably bring a section of the 1" pvc I have leftover and use that on the return to angle the return water out of it and just turn the pump on.
10-21-2013, 10:50 PM
#33
It's my understanding that although it is really cold to the touch, the latent heat values or something suck at cooling the water. Ice works way better from what I've read. Just what I've heard thoogh, I'm sure some thermo engineer will chime in or something. Lol
10-22-2013, 01:19 AM
#34
Dry ice actually works really well to. But it's even harder to store than ice and obviously MUCH harder to get hold of! Lol I would stick with ice if you are getting a couple of passes from a tank. What chargecooler do you have? Any way of running two feeds to the charge cooler? You could then add a second pump and run in parallel! 
Charge coolers are a complex beast, although slightly simpler if no HE is involved. It's about getting sufficent mass flow of water through the core but not too much. Kurt urban on here was testing a whipple 2.9 and had real trouble getting enough water flow through the core even at 30psi water pressure.
I guess the same is true for a2a cores but no one seems to worry about airflow with them That's what makes me think thy are being used more as heat sinks (or capacitors) than actual heat exchangers (radiators)!
Charge coolers are a complex beast, although slightly simpler if no HE is involved. It's about getting sufficent mass flow of water through the core but not too much. Kurt urban on here was testing a whipple 2.9 and had real trouble getting enough water flow through the core even at 30psi water pressure.
I guess the same is true for a2a cores but no one seems to worry about airflow with them That's what makes me think thy are being used more as heat sinks (or capacitors) than actual heat exchangers (radiators)!
10-22-2013, 10:11 AM
#36
It is the $75 eBay universal A2W. I'm not trying to throw a ton of money at something that performs well within my satisfaction. Only think I could see myself doing with it is drilling out the 3/4npt holes and having 1" aluminum barbs welded on because those are the two smallest fittings on the whole system. I know its just two fittings, but bilge pumps hate pressure, I bet those two fittings rob like 100-200GPH at least.
10-23-2013, 05:10 AM
#37
It is the $75 eBay universal A2W. I'm not trying to throw a ton of money at something that performs well within my satisfaction. Only think I could see myself doing with it is drilling out the 3/4npt holes and having 1" aluminum barbs welded on because those are the two smallest fittings on the whole system. I know its just two fittings, but bilge pumps hate pressure, I bet those two fittings rob like 100-200GPH at least.
Be intresting to see what your system presure is at the moment and the flow ratin for the pump at these presures.
10-23-2013, 05:15 AM
#38
So there is no point in adding salt. Getting the ice as cold as you can will help as it will keep the delta Ts higher for longer (therefore actually pulling more energy from the intake air).
Hmmm I wonder if you can get 12volt ice makers? Lol
