El;
You've tried a whole bunch of things and some have helped and some have not, that's part of the process,been there/done that.....
I think your going about it the right way and I have been going over this in my mind and it's starting to get "personal" with me.
So far, you've done pretty much all the recommend "fix's" cept the pulley and a different fan.......pretty much the same results, so I'm gonna box up that crappy pulley and a fan and send to you to try....
The fan is 1/2 of a factory dual fan set-up off some Mitsubishi car I picked sometime ago at a body shop. The actual blades are 16"s in diameter and the whole thing is about 18"s in square.I cut it in half and used one half on my engine run-in stand, all I have is a small aluminum Griffin radiator (old) on the stand, maybe 24"s wide total. I ran my 331 race motor on it for a total of 3 hours a while back, with the longest continous run time of 1 hour at varouis rpms and it never,never got above 180.......On the race car I have a 17" or 18" electric fan (Spal, I think) but a bigger radiator and it does the job. I think it is a 3600 cfm fan, but the Mitsubishi fan will blow that and at least half that again if not more, it's a freakin hurricane when on, I'm guessing at least 5000 cfms...
It's worth a try and by switching the hot/ground wires, you can make it a puller or pusher....
E-mail me your mailing address at
cda351@bellsouth.net
and I'll get it out to you in the next day or two.....if it works, pay the shipping and it's yours.......
As I said, it's starting to get personal with me and I want to see it fixed as bad as you, been in the same situation before and I know it ain't no fun going for a drive wondering when it'll get hot and always watching the temp gauge!!!!!!!!!!
David