I've been giving alot of thought to putting the radiator in the back. After seeing how low the hood is now on Lance's rig it seems pretty appealing to do. Lance was gonna give us some feedback on the performance of it after some trail rides on it and not just the comp ... you out there Lance ?

So, to whoever has done this what kind of tubing did you use to route the coolant to the back? And could you use a smaller radiator since you're adding so much more coolant to the system ?

- jack

bueller ? bueller ? anyone ?

On the trail it has stayed nice and cool. I drove the vehicle to the Rubicon for Jamboree, and drove over hartless grade, etc. It DID get hot climbing the grade. When not climbing, it was fine. I am not sure if it is not enough water flow (bigger flow water pump) or not enough air flow (or both). I am using a black magic fan as a pusher, and it doesn't seem very efficient. I think I am gonna try and work on getting it behind the radiator so it's a puller (how it's supposed to be). If that don't solve my problem, I will get a HP water pump. Again, on the trail it was fine. Only climbing the grades did I have a problem. I used a 19 x 28" Griffin Aluminum rad with 1 3/4"
muffler tubing.

Yeah, puller fans are much more efficient because you're using atmospheric pressure to your advantage rather than having it work against you. It should help quite a bit to switch it.

wow ... 1.75" tube ... that's alot bigger than I would have figured necessary. thanks for the info Lance.

- jack

rear radiators cool grreat on the trail, make sure you fill them up all the way, with all that tubing you have a tendancy to get huge air pockets, and can be a gallon or more low when the radiator is full, so get it up to temp let it cool and then fill again, repeat a few times.

on the street at 45mph or better most vehicles i,ve seen them in seem to create a high preasure air space behinde the radiator, because of the air flow charaqctoristics of the vehicle, which fights against the electric fans, therefore it runs hot. the only solution we have come up with is to put some type of tunnoe cover over the back of the truck while street driving.

I switched to a rear raditor a couple of months ago and with my 4cyl motor it's working great. I used the stock rad and just mounted it in the rear with a black magic fan. The fan runs about 1/2 the time to keep the motor cool. When summer's over, it should run even less.