Fan clutch question
Thread Starter
Registered User
Joined: Sep 2012
Posts: 484
From: Gilbert, Arizona
Fan clutch question
On engines that utilize fan clutches, the ones with that thermostatic coil in front of the clutch, would tightening the coil make the clutch engage earlier at a lower temp, or would the effect be the opposite and make the fan clutch kick in at a higher temp? Or would it not make any difference at all? Is there any harm in doing this?
The reason I would like to know is because my 63 215 fan clutch went out (leaking) a while back and since the correct one is no longer available, the closest I could come up with was a fan clutch from a V6 S-10. It doesn’t seem to fully engage until the temp hits 205 or so degrees, much later then the original unit, I’d like for it to engage before 200 degrees is reached with the all aluminum 215 V8.
The service manual shows a 170 degree thermostat standard for that engine. That tells me 205 degrees is probably higher then it was engineered to run…… So tighten or loosen the coil, what should I try?
The reason I would like to know is because my 63 215 fan clutch went out (leaking) a while back and since the correct one is no longer available, the closest I could come up with was a fan clutch from a V6 S-10. It doesn’t seem to fully engage until the temp hits 205 or so degrees, much later then the original unit, I’d like for it to engage before 200 degrees is reached with the all aluminum 215 V8.
The service manual shows a 170 degree thermostat standard for that engine. That tells me 205 degrees is probably higher then it was engineered to run…… So tighten or loosen the coil, what should I try?
Lance
Joined: Oct 2009
Posts: 757
From: YUKON, OK.
Some good resources on this topic.
http://midamericachevelles.com/tech/...tch_adjust.pdf
http://www.kirkconnellcorvettes.com/
http://midamericachevelles.com/tech/...tch_adjust.pdf
http://www.kirkconnellcorvettes.com/
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