This will give you a definitive answer. Worth trying IMO.
Just curious how thick your heat exchanger is? I had a front mount intercooler (3.5" thick) before but never had had such issues with water temps.

 

I agree, but my experience with racecar cooling (no fans to aid airflow) reinforces what I said. Thinner radiators are MUCH better in those applications. And that applies to high-speed use on other vehicles where the fans have little effect. Of course, everything is a compromise, so it may work OK in your application.

 

Not very thick probably ~40mm

 

To close the loop on this one. Taking out the front mounted radiator indeed helped the temps a lot. When moving fans are staying off and temps are not going higher than 75 degC with ambients around 30. I gotta figure out a better package.

 

You should be able to put your IC heat exchanger exactly where stock AC heat exchanger was (stacked on front of radiator).

 

Indeed that's what I'm planning to do. Will do it somewhat as a quick fix once I'm through my current ECU change (going to throw out the EMU black and try a Maxxecu), but over the winter that cooling package will need a new design. Plan to design new brackets to hold IC Pump, engine water pump, intercooler, integrated with air filter and ducting. So it starts to be a bigger thing