OK.... This situation is a bit complicated and some might even say comical.
A little over a month ago I bought a very nice 98 TJ (out of western Utah) that someone has put alot of upgrades on. Most noticeable at first glance is a Rubicon Express 5.5" long arm Extreme duty lift with the mega short SYE and a lengthened rear drive shaft. I believe it has the "Sport" package... it does have a Dana 44 rear end with a D30 front (but no lockers and I don't even know how they are geared). It also has the 3 speed automatic. Its running 33 x 12.50 R15 LT's.... But it also has an upgrade that is very uncommon and the source of my quandary:
A Rotrex C38-61 supercharger on a practically new (very low mileage)rebuilt 4.0 liter engine. When I bought it, the supercharger was not engaged (serpentine rerouted), and when I had the dealer hook it up, it worked great but on a nearly 100 degree day here in Grand Junction, it very quickly caused over heating issues as it pushes a lot of hot air into the manifold with no innercooler to reduce the air temp between the SC pump and the intake. This was obviously why the previous owner had disabled it. Now they had upgraded to a double size radiator but had not lowered the radiator to compensate for a 1.5" BL and consequently cut out the bottom 1/3 of the fan shroud, and to make things worse had put on a Flex-a-lite fan.... so basically not much air is being pulled through the radiator and the SC's oil cooler.
According to what I have found out talking to the companies that are Rotrex dealers and from what I can gather off of Rotrex's web site this $2,200 ++ parts package could/ should take this engine from 190HP up to 350+HP at moderately high RPM's. But with my drive train I'm afraid this might be too much power. Since at this point I'm not sure of my diffs' gearing I'm also not sure if any of the the components, axles, u-joints, etc. have been upgraded as well. I'm not really interested in extreme rock crawling just for the sport of it but I do want to be able to pull a relatively heavy trailer (~2000# total) of camping gear into some pretty remote places for camping, hunting and fishing trips.(BTW: I am aware that my highway driving with this load must be very conservative.) And since most of these places are without cellular service and since we usually fly solo, I really don't want to bust up my drive train out in the big middle of the "ultimate thules" just because of too much power.
Now I'm pretty sure that a thermostatic electric radiator fan, a "flow-cooler" water pump and an engine oil cooler, along with hood louvers will take care of the heat issue, and if necessary I'll engineer in an innercooler, to get it to the point that I can run the supercharger.... but I'm not sure that the supercharger isn't more trouble than its worth, and perhaps I should just consider selling it.... For instance: I really like the idea of a "Super Chips" trail dash but with the 4.0 "supercharged" all it would be is just a fancy electronic touch screen gauge as there are no "tunes" worked out for that modification, nor any other after market "flash tuners" that can accommodate a 300+ HP supercharged AMC 4.0 liter engine for that matter... Or: I'd like to put taller tires on, say 35" or 36's, but that will put even more resistance on the ground and on my drive train and with that much more than "stock power" (300++ HP??) gearing my diff's down for bigger tires might be the opposite of what I want to do if I want to avoid "twisting something off".
Obviously the previous owner was on his way to creating a very capable rig, but stopped short. I'm probably not going to be going after any "grade 5's" over at Moab and although this rig is very close to being that capable, with its nice paint job and custom "pen-striping" it would be a shame to scrape it across a bunch of rocks (or worse) just for the sport of it.
So.... I know there are a bunch of very knowledgeable folks here with alot of different perspectives about jeeps and what they should or shouldn't be....
I'm not very experienced with the current "state of the art", either in terms of equipment or ideals.... I think the supercharger has less than 500 miles on it and I think I could get a pretty good price for it....
So what would you do???