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#1
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what is the preferred cooling fan in the turbo cars?
OK silly question I think...should the hose build any pressure?
my 82 SD has an all aluminum fan in it, my two parts cars have plastic fans mounted onto the fan clutch. which one is better? any difference? any opinions? I have a nice electric cooling fan kit I may put in, but the car works SOOO well... I kinda hate to modify it... Why is my SD so FAST? anyway... just wondering. John
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#2
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The plastic fan is the most recent design. I believe it has 9 blades versus the seven blades on the original aluminum fan.
I put the plastic fan in the SD awhile ago but never noticed the difference. |
#3
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The plastic one is the updated model. It is also mounted to a smaller diameter water pump pulley The new water pump/fan ratio is something like 0.9:1 vs 1.09:1 You will need new shorter belts to go with it.
It will flow more water through the engine and pull more air through the radiator. I'm not sue if the fan clutch was updated as well. |
#4
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Quote:
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#5
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I've seen it on most 84 and 85 vehicles. If it's got the 9-blade plastic fan, it's very likely got the smaller pulley is on there as well. I got my set off a junkyard car and I see some more every so often.
You can upgrade the fan and leave the stock pulley without harm. However, you can't use the smaller pulley with the aluminum fan. It can spin the fan too fast which may cause it to break apart. |
#6
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Really..... I am using that same setup right now. I have the plastic fan sitting in my garage, do you think I should change it out right away?
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1983 123.133 California - GreaseCar Veg System |
#7
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Yes.
EDIT: Could somebody with ALLDATA post the TSB? Last edited by ForcedInduction; 03-10-2007 at 12:40 AM. |
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