Active Radiator extreme heavy duty - T600 KW

Just wanted to post up a short quick review on this radiator - anyone with a T600 & 500+ hp will definitely want to keep an eye on this thread. My truck was just overhauled and I had them put this new radiator in it. It's called a 4 core radiator but is technically a 3 core. Not 100% sure about the tanks and frame around it but the core is made in Philly, $1,350 + freight. They got my truck started for the first time this morning and got it up to operating temp checking for leaks. They left it idling at 1,400 rpms for over an hour, the fan never came on, and the water temp never went over 194* Now with the old stock 3 core radiator my temp would slowly rise up to 217* until the fan kicked on, if I let it go that high, I never let my water temp go over 204* without engaging the fan. Anyways, I was impressed by that. My coolant capacity with the stock radiator was 10 gallons. They put 12 gallons in with the new radiator and had to add another gallon after it purged air out of the system. I won't be getting loaded and rolling until tomorrow but I am positive this radiator is more than capable of keeping my motor cool. Anyone who's ever driven a T600 with a 550 that's as picky as me about keeping water temps below 200* will know what I'm talking about when I say I use the fan a lot. I'm positive my fan usage will go down significantly.

 

Right, right.. the rows in the core. I just always called it 3 "core" or 4 "core", guess that's not technically right - the rows are in the core - but no-ones ever called me out on it. Really anxious to try it out, like I say, anyone who's had a T600 will understand the frustration of the stock radiator with a big motor it's really aggravating and I can't wait to get hooked to a load...

 

I wasn't there when they first started it but I doubt seriously they just bumped it up to 1400 rpms right from the get go, but they may have I dunno... I do know they have a procedure on that but likely everyone has their own way or whatever. This was done by CAT and has a good warranty behind it so I'm really not worried about the motor at all. I know the wrench who built it and know it's right.