Electric fan instead of fan clutch
Anyone here make the switch?Do you feel more power?Fuel mileage?Can you just use stock fan for AC,if you have no AC?
Trying to save hard earned cash. |
IMHO, if you save any money on fuel at all (your right foot is likely to have a much larger effect), you will be a long time recovering the cost of an electric fan to replace the stock mechanical fan.
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I think this was discussed in the diesel performance tuning section recently and the concensus was that there isn't a whole lot of improvement in power or fuel economy from switching a fan/fan clutch to an electric fan. I don't think the auxillary fan would be capable of removing enough heat from the radiator. Its not shrouded and the fan is just to small.
Here is the link http://www.peachparts.com/shopforum/diesel-discussion/234663-mechanical-fan-vs-eletrical-fan-cooling-system.html |
If the fan clutch fails, it usually fails by not releasing and giving constant airflow. If the electric fails, the lost air flow could cause overheating.
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Cost
Well it looks like a clutch is over a $100,and a junkyard fan $20.
With the Great Depression 2 here,I'm trying to cut expenses.Mine is noisey in cold weather.Some say they will wipe out the radiator. |
Go with a direct drive fan like the 240d has if you want to save money. I've run with an electric fan and they do not provide enough cooling capacity in the summer when heat loads are high. You could probably remove the fan for the winter.
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Direct drive tell me how.Like a flex fan? mine has nylon blade.I saw somewhere a guy fitted a flex fan with a spacer,and bolts sheared.I sometimes see 4500rpms.
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A 240d fan from the junkyard.
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Thanks.
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Go to the junkyard and find a transverse GM V8 and get a thermostatic relay from your local parts store and push it through the radiator fins carefully. I got mine from a '91 oldmobile for $10 at pick-your-part when my fan clutch seized up. I must say, there is some power to be had when the fan is off, but make sure your auxillary fan is in proper working order before going to electric, just in case of failure.
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The HP and economy difference is almost nonexistent. When the radiator is cool the fan is freewheeling and taking almost no power. The fan doesn't even start to lock up until 164*f air temperature (about 90*c coolant). You would need to be frequently driving in the mountains or towing a trailer for an electric fan to save any money. The A/C fan isn't anywhere near big enough for cooling the engine. If you want reliability stick with the clutch fan. It has 1 failure point- The clutch. Electric fans have 5 failure points- Motor, relay, temperature sensor/switch, fuse and many electrical connections. |
OK,I've found a clutch at a very good price.Thanks for discussion.
Forced is my Idol. |
Dang clutch was for metal fan.So got rid off fan and clutch.Using a E Fan.Wow what a difference.My clutch must have been locked all the time.I've got more power to the tires.
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Can the fan BREAK if its direct shaft??? I mean How much stress can the fan handle till it turns into a grenade.....
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