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06-25-2007, 02:39 AM
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Hummer Veteran
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Join Date: Feb 2006
Location: Charlotte, NC
Posts: 181
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Re: Cooling issues...
I take it that thermostat didn't work right?
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06-25-2007, 03:16 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: Cooling issues...
When I did my small block conversion in my Jeep, initially I had no shroud and engine temp would peak at about 250. Once I installed the shroud it only peaked at 215. That is using A fan clutch, no electric fans.
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06-25-2007, 08:35 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: Cooling issues...
Yes, you need the shroud. It will make a huge difference.
__________________
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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06-25-2007, 10:04 PM
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Hummer Messiah
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Join Date: Apr 2003
Location: Virginia Beach
Posts: 37,474
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Re: Cooling issues...
I never had a problem with that, but Fubar did. He went through all kinds of crap.
I don't know if it was ever corrected.
Get the one with the shrouds and be sure to install a cutoff switch in the cabin. This way you can turn it off when you charge through a deep water hole. I shredded a pair of fans deep on the trails doing that. We went back to the original fan clutch after that.
Good luck.
__________________
"My reading of history convinces me that most bad government results from too much government."---Thomas Jefferson
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06-26-2007, 03:24 AM
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Hummer Veteran
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Join Date: Feb 2006
Location: Charlotte, NC
Posts: 181
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Re: Cooling issues...
Mark,
I just bought that other set of dual fans that you didn't like the shroud on. I got them for a REALLY good price of course. Why don't you try them out when I get them and see if they help. Ifo so you take them, if not I'll put them on the back hatch of mine like a jet car.
Tim
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06-26-2007, 04:27 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: Cooling issues...
Tim,
I'm sitting on my couch right now double checking dimensions. I just went out to the truck to measure the the size of of the radiator.
I'm getting ready to order this.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=FLX%2D284&N=700+4 00226+115&autoview=sku
Didn't we measure the width to be 32"? If so, this will make a tight fit.
I'm going to have to spend almost 600 bucks on these fans and then I want to get a new transmission cooler with a fan and mount it under the truck.
The ones you just bought I don't seeing as being very helpful. They're more cfm but still without a shroud and I honestly think that's my biggest problem.
Mark
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06-26-2007, 05:14 AM
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Hummer Veteran
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Join Date: Feb 2006
Location: Charlotte, NC
Posts: 181
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Re: Cooling issues...
Mark,
I think it was just over 31. Well you are more than welcome to try the new ones out first if you don't buy others before hand. **** for the price they cost you could have a custom shroud made and still probably half the others price. Just a thought.
Tim
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