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02-24-2009, 03:28 AM
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Hummer Professional
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Join Date: Mar 2008
Location: Barto, PA
Posts: 252
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Updating Radiator (Extra Insurance)
Has anybody changed there Rads for aftermarket, and if so what brand, how much, and where??
Thanks in advance. Ed
__________________
2004 Hummer H2 " Metallic Red "
20 inch Mojave's (Teflon)(325/60/20) BFG A/T's
MagnaFlow kitty back...Hypertech Tuned..Music to my ears 
HCMI Member 50043
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02-24-2009, 04:08 AM
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Hummer Guru
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Join Date: Oct 2005
Location: Charlotte, NC
Posts: 2,767
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Re: Updating Radiator (Extra Insurance)
I did but it basically happened when I installed the supercharger anyways.
I talked to a tech friend of mine and he made a good point that for the most part, if the lines break going into the trans, it doesn't get into the antifreeze.
I was going to do mine for safetly but think I'll pass right now.
Food for thought...
Mark
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02-24-2009, 04:20 AM
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Hummer Professional
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Join Date: Mar 2008
Location: Barto, PA
Posts: 252
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Re: Updating Radiator (Extra Insurance)
Thanks Mark I'll keep that in mind.
__________________
2004 Hummer H2 " Metallic Red "
20 inch Mojave's (Teflon)(325/60/20) BFG A/T's
MagnaFlow kitty back...Hypertech Tuned..Music to my ears
HCMI Member 50043
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02-24-2009, 07:02 AM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: Updating Radiator (Extra Insurance)
I changed mine out for a Ron Davis dual core radiator without the internal tranny heat exchanger and then added a tru-cool tranny cooler with thermal bypass. Engine/tranny never get hot anymore, but still have a problem with power steering getting too hot when offroad in tight corridors and moving slow where no air makes it over PS cooler. This only happens offroad in summer heat
The Ron Davis radiators are not cheap but are worth every penny. If I had to do it over again, I would do the electric fan conversion as well
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H2 SUT 4.56 Gears, Front Locker, Cognito Pitman/Idler kit & Idler Pivot Kit, Fab Tech Tie Rods, True Tech Trailing Arms, Edelbrock Panhard Rod, PML rear Diff & Tranny Pans, Corsa Exhaust, Dynatech LT Headers, Diablo Predator Programmer, Volant CAI, Warn 9500 Winch, Escort 8500x50 & ZR3 Laser Shifter, Delta Light Bar, Rancho Steering Stabilizer & Bilstein Shocks, Ron Davis Radiator, PowerSlot Rotors, Hawk Brake Pads
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02-24-2009, 06:56 PM
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Hummer Professional
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Join Date: Feb 2003
Location: Palm Desert, CA
Posts: 470
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Re: Updating Radiator (Extra Insurance)
I got mine from Breathless Performance and it works great! I too have a SuperCharger.
http://www.breathlessperformance.com...20Radiator.asp
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2003 H2 Hummer, Yellow,Polished Whipple Supercharged, Dynatech long tube headers, catback,18\" Ambush w/Toyo MT\'s,lots of goodies!
Y2K Corvette Millennium Yellow Convert/Blk/Blk, B&B headers, B&B Tri-Flo\'s, H-Tech MAG,GMS MAF, RM Racing TwinFlow.
1994 Chev Suburban Blown
1970 Trans Am balanced, blueprinted, ceramic headers, etc.
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02-24-2009, 11:01 PM
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Hummer Veteran
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Join Date: Jan 2008
Location: High in the Colorado Rockies
Posts: 210
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Re: Updating Radiator (Extra Insurance)
Quote:
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Originally Posted by tomp
Engine/tranny never get hot anymore, but still have a problem with power steering getting too hot when offroad in tight corridors and moving slow where no air makes it over PS cooler. This only happens offroad in summer heat
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You sure got that right! I just discovered that one of the wires running to one of my brushguard mounted off-road lights was resting against one of the coils on the power steering external cooler. The cooler got so damn hot that the flex conduit that protected the wires was melted and fused to the cooler. At least the flex conduit did it's job and protected the wires, or there would of been a dead short the next time I turned on the lights! I'm really thinking of a mod to keep the PS fluid cooler, like an aftermarket PS cooler (if there is such a thing).
I wouldn't mind a higher capacity PS pump either!
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'05 H2 Lux, 37" KM2's on 17" Hutchinson Double Beadlocks, Cognito UCA's, Cognito Sway Bar Links, Custom Hydro-Assist Steering Upgrade, Eaton Front Differential Locker, 1" Rear Coil Spacers, Chevy Green Key Torsion Bar "Lift," Bilstein Shocks, Warn 9.5ti Multimount Winch, Dual Optima Yellow Top Battery's, Piaa & Hella Off-road lights, Gobi Rack, Tru-cool External Transmission Oil Cooler, Diablo Predator Hi-Octane Tune.
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03-01-2009, 03:38 AM
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Hummer Professional
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Join Date: Mar 2008
Location: Barto, PA
Posts: 252
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Re: Updating Radiator (Extra Insurance)
Thanks for all the replies, I do value your opinions. 
__________________
2004 Hummer H2 " Metallic Red "
20 inch Mojave's (Teflon)(325/60/20) BFG A/T's
MagnaFlow kitty back...Hypertech Tuned..Music to my ears
HCMI Member 50043
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05-24-2009, 08:02 AM
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Hummer Expert
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Join Date: Feb 2005
Location: new orleans
Posts: 506
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Re: Updating Radiator (Extra Insurance)
Quote:
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Originally Posted by H2 Bill
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Can I see a pic of the radiator setup with the supercharger install....
Thanks 
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Maury Ballstein: I've got a prostate the size of a honeydew and a head full of bad memories.
03' White 2 Door H1 Pickup w/ 2in. body lift
05' BLACK SUT SLANTBACK Magnacharged w\ 12lb pulley, 6in. Fabtech lift, tierods, BUILT 4L80E tranny, 5.13 gears
66' VETTE STINGRAY
12' DODGE RAM 2500 CUMMINS 4X4 W/ FRONT & REAR LOCKERS
07' Z06
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