Thermo fans - twin vs single.

[nitro50th]

Originally Posted by 1TUFGQ

Opinions on AU - FG fans please?.

I have had both AU twins and a BF/FG single on my XD 351 (Currently have the BF single fitted).

They were both controlled via a Davies Craig 0444 twin fan controller, the AU using both relays, starting the fans 10 seconds apart while the BF only uses the first relay. Both set-ups were full speed only, not two speed.

I found both fans to be excellent at keeping engine temps under control, even on very hot days in stop/start traffic. The reason I changed to the single BF was only due to the set-up being full speed only with the controller I used. The AU fans were very noisy when both were running, the BF single is much quieter.

The BF single also fitted the radiator a little bit better once it was trimmed.

With the correct set-up, either would be great I think.