I have been reading up lots on Efan conversion on 5.7 hemi, seems to be fairly easy to do.
I really like the clean look if V6 Efan and quieter operation.
Just have a few questions on it specially for cold Canadian climate before I pull the plug.
1. Have anyone did the Efan conversion see any noticeable gain in torque and fuel mileage?
2. Where I live, the temperature can go down to -40C/-40F in the morning. When I start my truck in the morning, the mechanical fan always comes on for a minutes or two. I was told it is normal regardless of the starting temperature, because it increase the engine load to bring up the oil temperature quicker. Is this true? If it is, will a Efan conversion have negative impact on cold start?
3. Is a lower temperature thermostat and tuner really necessary for this conversion? Since Efan is controlled by AC, if I do not run AC, it will not be running, therefore only cooling is from natural air flow right? I do tow about 9000LB for long road trip through the Rocky mountains in summer time, does this mean I need to keep AC on all the time when I am towing? If I do, whatever torque/fuel mileage gain will be offset by AC compressor, right? if I do not turn AC on, at what temperature will the Efan kick in without tuner and with stock thermostat?
4. I noticed that my mechanical fan is always running regardless of coolant temperature. Just at different speed, higher speed at start up and slow down afterword. Does that mean the fan clutch is faulty?
Thanks.
I really like the clean look if V6 Efan and quieter operation.
Just have a few questions on it specially for cold Canadian climate before I pull the plug.
1. Have anyone did the Efan conversion see any noticeable gain in torque and fuel mileage?
2. Where I live, the temperature can go down to -40C/-40F in the morning. When I start my truck in the morning, the mechanical fan always comes on for a minutes or two. I was told it is normal regardless of the starting temperature, because it increase the engine load to bring up the oil temperature quicker. Is this true? If it is, will a Efan conversion have negative impact on cold start?
3. Is a lower temperature thermostat and tuner really necessary for this conversion? Since Efan is controlled by AC, if I do not run AC, it will not be running, therefore only cooling is from natural air flow right? I do tow about 9000LB for long road trip through the Rocky mountains in summer time, does this mean I need to keep AC on all the time when I am towing? If I do, whatever torque/fuel mileage gain will be offset by AC compressor, right? if I do not turn AC on, at what temperature will the Efan kick in without tuner and with stock thermostat?
4. I noticed that my mechanical fan is always running regardless of coolant temperature. Just at different speed, higher speed at start up and slow down afterword. Does that mean the fan clutch is faulty?
Thanks.