Installed a larger radiator fan on the BJ73. With a turbo on the 3B I have minor issue with heat buildup at interstate speed (65-70mph) on hot summer days with the AC on. Mud member Well sorted(
Well Sorted - https://forum.ih8mud.com/members/well-sorted.121809/) did a cummins 2.8 conversion on a bj70 and had similar problems. He fixed the problem with a larger 17" radiator fan.
I installed a 17" high flow fan without fan clutch today. Had to realign the fan shroud a bit on my already DIY radiator mount for the aftermarket aluminum radiator. I have alot more airflow now. It is very evident how much more air is flowing through when you lean over the engine with the hood open. We'll see what the temp guage says next time I'm on the highway. ...........In the pic the stock fan is on the left.
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