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Unread 07-02-2013, 10:10 AM   #16
GP_Pete
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1986 CJ7 
 
Join Date: Jul 2007
Location: AA County, Maryland
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Just from what ee've gone thru i would think your culrit is clogged radiator + plus absence of a shroud. I have the same radiator and engine setup w zero overheating issues.

Also - your thermostat is clogged closed is it?

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Unread 07-02-2013, 10:24 AM   #17
jp360cj
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Just went out and looked at the fan, its not the factory one. Looks like a flex-a-lite or something similar. It moves a lot of air behind the fan, but don't feel much pull in front of the rad.

I'm going to get a shroud, have the rad rodded, coolant flush/replacement and go from there.

LG, do you have any pics of that hood vent? It looks much better than the ones I have seen
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77 CJ-7- AMC 360, Edelbrock cam, MC2100, Fenderwells, CJ T18/D20, Chevy D44/EB 9" rear, Trutrac f/r, 4.11, SOA, 1.25 lift shackles, 35x12.50 BFG KM2s, Shackle Reversal
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Unread 07-02-2013, 10:32 AM   #18
LumpyGrits
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http://www.genright.com/ProductInfo....ductid=LVR1009

The vent on the front of the hood of the red Jeep is the one I'm talking about.
I have it at the back of my hood.
I',m not 'puter smart and can't post a picture, SORRY.
LG
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Unread 07-02-2013, 04:45 PM   #19
lucdog
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While under the hood with the engine running increase rpm's to about 1500. My guess the fan blades are flattening out, and not moving any air. You should be able to feel if air is moving or not. This is a classic example of a Preformance fan, and more than likely the cause of your temp rise on the trail. With this fan, a shroud won't help.
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1957 WILLYS pickup, needs work.
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac trail Jeep.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
1984 Grand Wagoneer, 1 ton axles, great 360/727, and a big a$& tree fell on it .
1989 YJ the CJ to YJ conversion.
2005 TJ Rubicon.
2011 Grand Cherokee Laredo 4x4, Mrs. LUCDOG's DD.
Lots of parts not for sale, i'm a hoarder.
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Unread 07-02-2013, 05:21 PM   #20
jp360cj
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1977 CJ7 
 
Join Date: Oct 2007
Location: Greenville, North Carolina
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Yes the fan does flatten out. I've got a few 304s laying around. I'll c check them for a factory fan if you think it will help
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77 CJ-7- AMC 360, Edelbrock cam, MC2100, Fenderwells, CJ T18/D20, Chevy D44/EB 9" rear, Trutrac f/r, 4.11, SOA, 1.25 lift shackles, 35x12.50 BFG KM2s, Shackle Reversal
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Unread 07-02-2013, 05:37 PM   #21
lucdog
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I know it will help!!

A shroud will help with temps at idle.
__________________
1957 WILLYS pickup, needs work.
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac trail Jeep.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
1984 Grand Wagoneer, 1 ton axles, great 360/727, and a big a$& tree fell on it .
1989 YJ the CJ to YJ conversion.
2005 TJ Rubicon.
2011 Grand Cherokee Laredo 4x4, Mrs. LUCDOG's DD.
Lots of parts not for sale, i'm a hoarder.
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Unread 07-02-2013, 09:02 PM   #22
GP_Pete
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1986 CJ7 
 
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Location: AA County, Maryland
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Quote:
Originally Posted by lucdog
I know it will help!!

A shroud will help with temps at idle.
X2 for this ^
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