Thread: Thermo Fan for TD5

Please don't! The viscous moves far more air than any electric version can.

Originally Posted by Tombie

Please don't! The viscous moves far more air than any electric version can.

X2. Intercooler, radiator etc requires good air flow, especially doing track driving where vehicle is moving slow. Electric fan most probably won't be on, even if it could move as much air as viscous fan. Not worth the risk.

X 3. BUT. You may be able to supplement the viscous fan with a 10" thermo on a simple toggle switch wired through the ignition. Switch it on when needed. But then again, the fan on the Td5 if in good order should be sufficient.
Regards
Robbo

Later vehicles sometimes have a electric unit on the front of the condenser to assist A/C and additional cooling

Originally Posted by Tombie

Please don't! The viscous moves far more air than any electric version can.

They do make some very impressive electric fans. But very few people fit the right ones.

I have no issues with the cooling capacity of the best ones. You want about 14 amps per fan. most cheapies are about 8 amps.

Btw: had 16 inch thermo on my RRC. I'd put a thermo on a petrol non turbo, maybe a natural aspirated diesel that I don't care about, but not on a turbo engine.

Originally Posted by bsperka

Btw: had 16 inch thermo on my RRC. I'd put a thermo on a petrol non turbo, maybe a natural aspirated diesel that I don't care about, but not on a turbo engine.

Turbo diesels put out less radiator heat per hp than any petrol. I only have fans for running AC and climbing hills offroad. The rest of the time they don't run.

Electric fans must absolutely be fully shrouded. With no shroud you can only stir the air and not pull it through the entire radiator surface. The advantage of properly sized and shrouded electrics is they can pull more air at lower engine speeds than engine fans can. An engine fan at idle isn't doing much

Thanks heaps for the info guys.
I'll stick with viscous fan. It's just that after I had Allisport IC installed the Airflow has been reduced. When running at low speeds or stop go traffic you notice TM2 temp gauge increase. It's running at an acceptable temp and not overheating. I also had Viscose fan and thermostat replaced recently.

So I guess all should be fine.

Cheers
Mick