Thread: Delayed overheating problem

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Originally Posted by MelloYello

That fan sure doesn't look far enuff in the shroud to me to be doing "any" good. I have been told in the past that you need at least half of the fan inside the shroud. Can you tell from the front of the radiator if it is really sucking air thru the coils?

Just got back with longer bolts, bolted up the other spacer I had and the fan is further in the shroud about an inch or so.

New problem though, now the fan won't turn when I try to start it up. Is it possible that the bolts I got were too long?

Originally Posted by 34_40

Yes, lean mixture runs hot. Get to lean and melt the pistons!

The thought of that melts my heart, in a very bad way lol.

Originally Posted by megamax42

New problem though, now the fan won't turn when I try to start it up. Is it possible that the bolts I got were too long?

I guess anything's possible but that doesn't sound likely. Do you know how long your bolts and spacer are?

Originally Posted by MelloYello

I guess anything's possible but that doesn't sound likely. Do you know how long your bolts and spacer are?

I thought the spacers were longer but after looking at them they're more like 2.5 inches and .75 inch. I decided to try backing them out and adding two washers (which thankfully I bought earlier anticipating them being too long). When I pulled the bolts out they had orange paint (from the water pump) on the ends so I think they were up against the water pump. When I added washers to all the bolts and started it the fan started turning again. Can't believe I essentially locked the fan in place haha.

Took it for a spin to test the new fan position, the temperature still climbed above 210 (before going back down) but this time it didn't reach the redline, it was probably halfway between ideal and redline, so I guess that's some progress. My next step will be replacing the thermostat with a sleeve style thermostat and seeing how that works. I'll update when I get that taken care of.

Thanks for all your advice guys, you've been extremely helpful through this.