Heating Rig

[WDT Siri]

My BJ 40 gets heated up after some running. The whole floor board area up to the end of front seats, gets heated up making the AC useless.

Is this normal in a Diesel, or is it necessary upgrading the Radiator (4 core) to reduce heat generated from engine?

No boiling of the Rad to my knowledge.

 

[BEE-JAY42]

This heat hasn't got anything to do with you needing a bigger radiator, if your cruiser is anything like mine most of the heat is coming off the exhaust. What you need is insulation, either on your exhaust or under your floor and fire wall, or on both.