SMOKINGJOE

Adjusting Clutch fan?

Hi all which way should I adjust the spring on the front of my clutch fan. Which way does what?

Frankie the Fink

Here ya go!

62Jeff

Counterclockwise to make it kick in sooner, if your fan clutch is configured to kick in at 210 currently.
http://forums.corvetteforum.com/1571472351-post7.html

If it's already adjusted to kick in early, then turning it clockwise will make it come in later.

SMOKINGJOE

Thanks Guys I’ll check that out I hope it helps. Car just runs a little hot with the air on
I will also check the clutch might need a new one after all its 20 years old.
Joe

Frankie the Fink & 62Jeff

levonh

Great tip. I just did my big block (Chevelle at the moment). It was locked full CW. 1/2 turn CCW and we'll see what happens.

Frankie the Fink

I tried this adjustment on my '61 clutch but really didn't see much difference -- others have though..

levonh

Just got back from a 1 hr drive. Temp never budged off of 170 deg.
Outside temp is 75 deg.
1 happy puppy

KC John

170º is a little on the cool side for making sure all the moisture is removed from your oil. If you have it all working properly now you can install a 180º or 195º and you'll be in business.

The thermostat only controls the bottom number, it won't let the engine get cooler than the number set on the thermostat, but has no effect on how high the temperature can go.

jprop

Jeff, I've got the same clutch and am running a little warm. Did you notice any difference in the engine temp after the adjustment?

62Jeff

No, extensive testing showed that nothing really keeps my 62 from getting up to 220 is the car is left to idle for about 30 minutes or so. The car runs at 175 at speed, but sit at a long stop light, and the temps start to climb. I suspect lots of crap in the coolant passeges of the block.

levonh

180 going in on Monday.

levonh

Mine would only move 180deg CCW then stop. You could move it back but it would not do complete revolutions.