This may seem obvious, but check the fan direction, and with a piece of paper. I had the same issue and even though it felt like the air was moving the right way to my bare hand, the paper showed I was wrong. Almost cost me an engine....
I've run the exact same setup since '95 or so with no problems at all. My new 2.25 motor (5 yrs old) has not utilized the fan shroud and I have detected no cooling issues, even when towing a 23" boat in the summer. And I have the 88c t-stat.
So I'm wondering if something else is going on with your setup. Or maybe everything is fine, as you seem to suspect.
Question for you: What is this reinforcing of the pulley that you refer to? I just took off the fan and replaced the screws with some extra washers. Have never had a problem that I knew of. What should I do to reinforce the pulley, and why does it need reinforcing? Thanks in advance for your (or anyone else's) reply.
Ted
I went to ace and got a large machine washer that was the diameter of the pulley. Individual washers would work too. The reason i reinforced the pulley was because I ripped through the first one (after I removed the fan) within tow days.
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