Custom Radix Heat Exchanger How To
#11
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From: Decatur, AL
It is at least as big as two Radix hx's if not bigger. You could always utilize the factory one as well if you feel it is worth it. It is a dual pass hx which makes it basically 4x as effecient as the factory radix. It's about the same width just 2.5x taller.
#13
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From: Decatur, AL
Originally Posted by 2004Denali
I bought one from mjhoward, I'll let everyone know how it fits on a 04 Denali
Mark
Mark
#14
The only reason I had issues is because I am not to mechanicly inclined and had to do some fab work which is hard for me to do. I had a factory tranny cooler in front of my radiator which made it hard to fit. I just had 2 trannycoolers w/fans installed behind my lower bumper ( this is not my truck its thunder550 but I did the same thing.
https://www.performancetrucks.net/fo...chmentid=34255
https://www.performancetrucks.net/fo...chmentid=34253
I took off the factory cooler and now the HX fits great. I would recommend getting this from MJhoward, He is a great guy and will do anything to make things right if there is any problems
Mark
https://www.performancetrucks.net/fo...chmentid=34255
https://www.performancetrucks.net/fo...chmentid=34253
I took off the factory cooler and now the HX fits great. I would recommend getting this from MJhoward, He is a great guy and will do anything to make things right if there is any problems
Mark
#15
Originally Posted by 2004Denali
The only reason I had issues is because I am not to mechanicly inclined and had to do some fab work which is hard for me to do. I had a factory tranny cooler in front of my radiator which made it hard to fit. I just had 2 trannycoolers w/fans installed behind my lower bumper ( this is not my truck its thunder550 but I did the same thing.
https://www.performancetrucks.net/fo...chmentid=34255
https://www.performancetrucks.net/fo...chmentid=34253
I took off the factory cooler and now the HX fits great. I would recommend getting this from MJhoward, He is a great guy and will do anything to make things right if there is any problems
Mark
https://www.performancetrucks.net/fo...chmentid=34255
https://www.performancetrucks.net/fo...chmentid=34253
I took off the factory cooler and now the HX fits great. I would recommend getting this from MJhoward, He is a great guy and will do anything to make things right if there is any problems
Mark

How's it work for ya? What do you think of the HX so far? Any noticeable difference?
#16
I am wanting to say my AIT temps dropped by about 15 to 20* but it's been awhile since I logged any AIT. I also hooked up a 12in fan infront of the HX and it runs whenever the intercooler pump runs (which is all the time) I also hooked up a switch so I can turn on the intercooler pump and fan with engine off when I am in the staging lanes at the track so I can run cooler water through the SC.
As for the tranny coolers I just picked it up today from getting the lines hooked up so I don't know how they are doing yet. I ordered a fan controller http://www.dccontrol.com/
When that gets here I will hook up the fans.
While I have everbodys attention let me ask what is the best temp to keep the tranny at. I know HOT is bad but to cold isn't good either. With the controller I'm getting these are the choices I can set it at. 158*,166*,173*,187* I was thinking 166* anyone else have any thoughts.
Mark
As for the tranny coolers I just picked it up today from getting the lines hooked up so I don't know how they are doing yet. I ordered a fan controller http://www.dccontrol.com/
When that gets here I will hook up the fans.
While I have everbodys attention let me ask what is the best temp to keep the tranny at. I know HOT is bad but to cold isn't good either. With the controller I'm getting these are the choices I can set it at. 158*,166*,173*,187* I was thinking 166* anyone else have any thoughts.
Mark
#17
I have been told that 230 is about where you want to start getting worried about it....I personally don't like to see anything over 180. Mine will get up just over 180 in traffic till I turn the fans on, but typically I never see anything over 165 or so.
#18
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From: Decatur, AL
I am no longer interested in building these hx's due to possible liabilities and problems that I don't want to take the time or the headache to address. I will be happy to help anyone with advice the best I can.
#19
Would there be any interest in a custom 100% aluminum piece with or without Spal fans?
Here is a couple of pics with fan option... note plug-and-play... including wiring harness... no cutting / no fuss install... for an 03-04 Cobra... http://www.xmsengineering.com/cooling ... something I was involved with a couple of years ago. The Corba HE also had 1/8"NPT ports on entrance and exit tanks for temp monitoring if so desired...


Note the price of the Cobra heat exchanger on Xtreme's website (with and without fans). If there is interest in a clean plug and play solution let me know and I'll get the ball rolling on a kit... including proper vendor sponsership of this forum. If the price range is not palletable then I will not pursue...
Bill
Here is a couple of pics with fan option... note plug-and-play... including wiring harness... no cutting / no fuss install... for an 03-04 Cobra... http://www.xmsengineering.com/cooling ... something I was involved with a couple of years ago. The Corba HE also had 1/8"NPT ports on entrance and exit tanks for temp monitoring if so desired...


Note the price of the Cobra heat exchanger on Xtreme's website (with and without fans). If there is interest in a clean plug and play solution let me know and I'll get the ball rolling on a kit... including proper vendor sponsership of this forum. If the price range is not palletable then I will not pursue...
Bill


