At a loss here... It was suggested to get the fan within 3/4 of an inch, it is now just that and now I'm being told it's too close and to either move the rad forward, or shorten the spacer. I do think it is a bit close myself. But if 3/4 is too close then why weren't there any objections before?
I'll be ordering another spacer today but what's the best size? Right now with a 2" spacer there's 3/4" between the fan blades and the rad. How much space should there be between the fan and blade?
It would be interesting to see the temp differences when moving the fan back a bit. Right now I know it runs hottest running a mechanical fan with no spacer and no pusher.