Waking up an old thread...
Jeep has been well loved for a few years now, been to Rubicon twice, many trails in Moab and around Utah.
And it still runs hot, as we thought it would, due to the cruddy positioning of the engine (my fault), old Mepco chevy V8 swap radiator, and smallish electric fans that just don't provide the cfm. The radiator is in the stock location, and there's about 1/2" between the water pump pulley and the radiator. 4 fans on the radiator (2 push, 2pull) and a fan on an oil cooler on the drive fender and a fan on a small heater core mounted on the pass fender.
I bought the coveted Taurus fan when we did the build, but never installed it due to radiator to grill clearance issues. I Lean and I discussed surgery on the grill but I never coughed up the $$ to have him do it. The plan was to push the bottom of the radiator forward into the grill, slanting the top back, making a little more room at the top of inside of the grill for the Taurus fan motor. And it would worked, too, if it weren't for those pesky kids (needing to be fed).
So I've just dealt with it. Not driving it far on uber-hot days, carrying a lot of water, misters, etc.
However, recent trail rides are pushing me to do SOMETHING. It does _pretty_ good, considering what it's up against, and I wonder if a few little things would add up and keep it under 235, where it seems to be "ok" (nothing boiling over, but close). It's been to 250-260 more times that I can count, so write that down somewhere, a TBI454 can repeatedly be flogged up to 250ish and live through it. Once it gets to 250 it just can't seem to self-recover, I've gotta spray water on it, or totally coast down a hill. Idling with the hood up won't help. I also notice that the fans (on the front anyway) appear to be turning slower at 250 than at 220.
Thoughts (mine and others) include
- trying one more time to fit the Taurus fan between the radiator and the grill (see what the tape measure says),
- blocking up the back of the hood,
- small louvers in the black strips of the hood,
- misting system on the radiator (like a windshield washer bottle) - 48-64oz of water, slowly poured on top of the radiator and allowed to boil off, will bring it from 250 down to 220.
- remote radiator w/fans below the bed behind the fuel tank (there's room)
- other Band-Aid suggestions?
- Make room 1: cheat the radiator up and leaned back to create room for Taurus fan (or equiv),
- Make room 2: cheat the grill forward (this could work with hood hinges mounted slightly higher and forward with a bracket)
- Make room 3: cheat the grill forward/slanted to make room
- Make room 4: find a thinner Taurus-esque high volume fan.
The best non-bandaid solution, I believe, is to move the grill forward 1/2"-1", space the radiator off the grill as much as possible, and mount a small steel "shield" to protect it from the water pump pulley (though it's been 1/2" from it for 6 years in very abusive situations, with no interference. The engine mounts are quite stout and allow minimal movement in any direction, and the grill/fenders are in pretty good shape and have little movement as well; this structural integrity would have to be maintained to allow this to work.
With the 1" (?) of extra room, perhaps the Taurus fan (or thin equivalent?) would fit. The hood would have to move forward a little bit both for looks and for latching, but the gap at the back could help with venting hot air. During many of the 240+ episodes, I open the hood and have to pour water on the radiator to cool it. Just having the hood open alone doesn't cut it.
Thoughts?