Turbos add a lot of heat to these motors. This is why the 2LT always has overheating problems and the 2L/3L/5L don't.done turbo conversion on my Toyota 3l.
it seems to run hotter than before the conversion.
have upgraded to aluminum rad and electric fan.
any suggestions? was contemplating a water / air intercooler not sure if it would help.
Your engine should not be making much heat when idling. It's when under high load (big hills on highway, or towing) that it should be making the most heat. So yes, an electric fan might be better at idle, but that's not when you need the good cooling anyhow.I don’t understand the electric fan more air than a mechanical fan when the engine is idling. I kept the oem fan stroud. What about going to a flex fan as an option?
I think in cars their great! As you say, basically all modern cars use electric fans. Not the same for trucks though. Most full sized trucks still use mechanical fans AFAIK.As discussed previously, electric fans ARE better than mechanical PROVIDING they are set up correctly. (There is a reason why virtually every manufacture has moved to electric).
Thing is if you've bought an after market fan (say a SPAL or similar unit) it's not going to work well. You need to find an oem fan setup (shroud and fan) that fits your radiator. You want it sealed as much as possible with no gaps anywhere around the edges. The after market shroud units (with basically a flat bit of metal for the fans to bolt on to) just don't flow air nicely.
I'd recommend searching the wreckers for a oem fan/shroud that fits. Try and look at quality cars with high HP engines (Mercedes and Audi seem to have very good quality fan setups).
I also wire my electric fans up with a PWM controller for low speed... so it's always running but I set it at a level where I can't hear it. When the temp goes up it switches to full speed, works really well.
Old Morris 1100....(I think)
Sure enough! Not sure that setup would help much with a turbo 3L, though!Hah. I'd love to see a pic of that!
Electric fans can increase effeciency and decrease warm up time but they add a lot more room for failure and they cant come close to pulling the air a mechanical fan can. If your overheating when driving you should be looking at each piece if your coolant system and make sure it's working properly. If your overheating at idle you have bigger problems.
That and injectors need checking especially when you wind in more fuelNow that's interesting.
I think a lot of these older truck's coolant systems are just hanging on and then someone adds a turbo and increases the system burden by like 30% more and then presto.....overheating problem.