Engine Fan
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,037
Likes: 103
From: Brisbane Queensland
Engine Fan
G'day All,
Just installed a march serpentine system on my '69 vert L46. I have not used a electric thermatic fan system, but used a counter rotating fan clutch and Derale clutch fan. There is only one problem with this fan, it makes my vette ROAR like a truck.
So my question is, is this caused because the fan blades are evenly spaced as opposed to the orginal having different spacing for some blades? Any help would be appreciated.
Regards, Mark
Just installed a march serpentine system on my '69 vert L46. I have not used a electric thermatic fan system, but used a counter rotating fan clutch and Derale clutch fan. There is only one problem with this fan, it makes my vette ROAR like a truck.
So my question is, is this caused because the fan blades are evenly spaced as opposed to the orginal having different spacing for some blades? Any help would be appreciated.Regards, Mark
Had a 1976 L-82, 4-sp
Joined: Mar 2011
Posts: 5,338
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From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
When I could hear my engine (sidepipes now), the only under hood noise I ever heard was the air being sucked into the carb. Can you go back to the stock HD fan/clutch arrangement?
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,037
Likes: 103
From: Brisbane Queensland
Unfortunately no, as the serpentine system runs the fan in counterclockwise rotation which is the opposte direction to the oem fan.
I was wondering about swaping the fan blades from the new fan centre mount to the original fan centre mount. Thoughts anybody?
I was wondering about swaping the fan blades from the new fan centre mount to the original fan centre mount. Thoughts anybody?
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
Not the blade. It's the clutch. The original clutch was designed to freewheel more than the replacements. I have the same problem with a replacement clutch on my '79. The 'loose' original clutches are no longer available.
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,037
Likes: 103
From: Brisbane Queensland
Thanks for the info drwet. Might try and find a used c4 fan clutch in good condition.
p.s. c4's use an electric fan system.....
p.s. c4's use an electric fan system.....
Last edited by M A Fry; May 3, 2021 at 10:51 PM.
