radix intercooler too small
Dec 9, 2004 | 10:30 AM
#11
Hey HD...Glad you got er done! Seriously, 105 is fine. Its definitly the norm. OUr heat exchangers do the job well. Some of us are looking in to changing out the internal intercooler for a larger one found in other units...but for now, you are doing just fine. You runnin redline in your exchanger? MTI doin your tune?
Dec 9, 2004 | 10:46 AM
#12
Launching!
Joined: Apr 2003
Posts: 248
Likes: 0
From: Orange, CA
If you really want to put a bigger heat exchanger on, then check out the JDM heat exchanger made for the Lightning. But at $465, you might find a better ways to spend the cash.
www.teamjdm.com
Had to grind the mounting ears a bit to make it fit in my SS.
Looks pretty cool, lurking behind the lower grill opening on my SS. Not sure what you could do for air flow on your truck.
I wish I could say what this upgrade did for performance. Unfortunately, I did not get my intercooler coolant temperature gauges setup until after I had the larger heat exchanger in, so there are only subjective comments to be made. The one thing I did notice, is the quick cool down after a full throttle run. In hot weather, the stock heat exchanger (I had the small one) would take a long time to get the coolant temp back down. So there is at least a stop light to stop light advantage to a better heat exchanger. The electric fans help in this regard as well, since you can be cooling down while stopped at the light. One measure of the effectiveness of the larger heat exchanger, is that with the engine off and the electric fans and pump running, I can cool the coolant down to ambient in less than 2 minutes. Handy for cooling down at the track.
On the cheaper side, you can find replacement heater cores in a variety if sizes.
www.radiatorexpress.com
I found that fishing around in the early to mid 70's Ford truck heater cores, there are several that have nice size characteristics and inlet/outlet tubes that would be suitable for using as auxiliary heat exchangers. And for $30-$40 each, is probably a sensible way to experiment with adding some more heat exhanger to your system.
You may also want to talk to syclonedave about his Intercooler Chiller project. It uses the airconditoning system to chill the intercooler coolant. It sounds very interesting to me.
www.teamjdm.com
Had to grind the mounting ears a bit to make it fit in my SS.
Looks pretty cool, lurking behind the lower grill opening on my SS. Not sure what you could do for air flow on your truck.
I wish I could say what this upgrade did for performance. Unfortunately, I did not get my intercooler coolant temperature gauges setup until after I had the larger heat exchanger in, so there are only subjective comments to be made. The one thing I did notice, is the quick cool down after a full throttle run. In hot weather, the stock heat exchanger (I had the small one) would take a long time to get the coolant temp back down. So there is at least a stop light to stop light advantage to a better heat exchanger. The electric fans help in this regard as well, since you can be cooling down while stopped at the light. One measure of the effectiveness of the larger heat exchanger, is that with the engine off and the electric fans and pump running, I can cool the coolant down to ambient in less than 2 minutes. Handy for cooling down at the track.
On the cheaper side, you can find replacement heater cores in a variety if sizes.
www.radiatorexpress.com
I found that fishing around in the early to mid 70's Ford truck heater cores, there are several that have nice size characteristics and inlet/outlet tubes that would be suitable for using as auxiliary heat exchangers. And for $30-$40 each, is probably a sensible way to experiment with adding some more heat exhanger to your system.
You may also want to talk to syclonedave about his Intercooler Chiller project. It uses the airconditoning system to chill the intercooler coolant. It sounds very interesting to me.
Dec 9, 2004 | 12:20 PM
#14
Launching!
Joined: Apr 2003
Posts: 248
Likes: 0
From: Orange, CA
I have a EFILive log of my homeward bound commute, from about a month ago. I don't recall ambient air temp, but looking it up on the Internet, it is recorded as 67 degrees. The stop and go driving (nothing outrageous on the throttle), IAT was around 95-102 degrees. On the free flowing part of the freeway, 102-104. Once I hit the stop and go traffic, (15-25 mph), temps creep up to 109.
There is a 4-5 second blast of near full throttle followed by 55 mph cruise. The full throttle blast brings things up to from 106 to 113 by the end the 4-5 seconds of the full throttle blast. Seven seconds after the full throttle start, IAT peaks at 117. Thirty two seconds later, IAT is back down to 109.
After getting off the freeway, doing some stop light to stop light driving, with only moderate throttle, temps slowly climb up to 115, probably due to long stops at the lights limiting cool down from freeway heat.
Doing some 0-60 runs on the previous day (same max temp of 67 ambient temp), peak IAT observed was 131 Degrees after two 0-60 runs with a shorter cool down between them.
There is a 4-5 second blast of near full throttle followed by 55 mph cruise. The full throttle blast brings things up to from 106 to 113 by the end the 4-5 seconds of the full throttle blast. Seven seconds after the full throttle start, IAT peaks at 117. Thirty two seconds later, IAT is back down to 109.
After getting off the freeway, doing some stop light to stop light driving, with only moderate throttle, temps slowly climb up to 115, probably due to long stops at the lights limiting cool down from freeway heat.
Doing some 0-60 runs on the previous day (same max temp of 67 ambient temp), peak IAT observed was 131 Degrees after two 0-60 runs with a shorter cool down between them.
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