pusher vs puller fan

[sd88supra]

ok, i installed a hayden 14" electric fan in my 87 NA after my fan clutch crapped out. thing is, even the damn fan clutch throws more air and cooled my car much better even without the fan shroud than this shrouded electric fan. i installed it as a puller, since space is scarce in front of the radiator. and yes, i remembered to flip the blade over and reverse the polarity (since they come pusher-ready). as far as spacing, the blades are about 1 inch from the radiator, best i could do withough leaving it all dangly. i dont think it should be closer to the engine, or should it?

my car right now almost seems bipolar. when running continuously, it runs at ideal temp. when idling or in heavy traffic the temp gauge sky rockets. as soon as i step on it it practically falls back down. after driving it around for a while, after turning off the engine you can hear the hot coolant boiling inside, something that never happened before my fan clutch crapped out. but, i dunno if this has anything to do with a bad water pump.

someone please tell me i need a better fan (if the fan is the problem). this is tempting me to go back to the damn fan clutch.

[mrnickleye]

My car is N/A, so heat is not such a concern as turbo.

The Hayden fan is only rated at 1100 CFM. That is what I am using too. Mounted to the back side of the radiator.

The boiling sound is normal when you shut off engine that is pretty hot. Its boiling the water, and the cap is letting it over into the bottle.

I always have my A/C on here in the desert, so my 2 little factory fans also run, which helps keep it cooler.

I run a 180* thermostat, which won't prevent over heating, but does allow it to run cooler if it can. Better than keeping the temp up to 195* minimum.

I also added a large (12"x15") transmission cooler right in front of the radiator (mounted to it actually), between the radiator and the A/C condensor. I removed the small 3/8" coolant by-pass hose (below the thermstat) and ran hoses out (under the afm)to the new cooler.

I calculated a 40% radiator increase.

It always runs about 1/3 on the gage, and never have the boil over sound anymore.

50/50 antifreeze. New cap.

If I were to ever need a new fan, I would get this.

http://www.jegs.com/webapp/wcs/store...tegoryId=10117

#720-1987...14" 1800cfm.

You may need this. Or do a search on this forum for electric fans others have used.

[ddmcse]

my elect fan throws 2950 cfm no shroud


that 1100 isn't going to cut it

[mrnickleye]

Originally Posted by ddmcse

my elect fan throws 2950 cfm no shroud


that 1100 isn't going to cut it

That's my point. Gotta have a lot of air moving thru a supra.

What kind / brand are you using??

I may want to upgrade mine.

Also, I removed the rubber hood sealing strip on the body at the firewall. It helps let air out of the engine bay.

But not a good idea if your car has oil leaks, and smokes under the hood.

[Isphius]

The reason your car overheats when in traffic is because your not getting any air flow from the car moving lol. If this is happeneing, Your fan is underrated. Get a bigger one! Your fan is there just to cool the car when its moving slow. You dont even need the fan when your going down the highway or just going at least 25 or above. Ive driven around without my fan even on (on my way to get a replacement) And it was fine, Because i didnt stop.

[ddmcse]

im using a perma cool and i removed the rubber molding from the engine hood too

after i saw you did it .
it makes alot of sense to me