Which crank pulley to use, and what fan, still a little hot?

[daddystang]

I'm starting a new thread for kind of the same problem. My 92 5.0 w/306 ci , AFR 165's, Trick Flow intake, 24lb's, E303 cam w/ 10:1 compression gets up to about 210 degrees when idleing, but will stay between 180 and 190 while driveing. On my old thread "92 5.0 running hot, running rich I got a lot of great feed back from several people ( thank you ). To date I've tried new water pump, 180 t-stat w/ 1/8 inch holes drilled in the lip to let air out, 3 fan clutches. I've got the stock fan w/ 3-row big tube radiator that's about 5 months or so old. Some feed back I got was to go to an e-fan, because the stock set up can't cool the new engine I have in it now. Hissin50 had some good advice on fans, and I checked Houstonperformance.com, but couldn't find the fans. So I wanted to get some suggestions on which fans work best. Mark VIII fan, but where do I find that one. I've seen one on Summit, Black Magic fan that flows 3300cfm, anyone know anything about that one? I've got a cobra overdrive water pump pulley on now, and that seemed to make the driving temp stay around 180 longer, but it still goes up at idle. Should I drop the underdrive crank pulley, and go back to the stock pulley? Would that help the cooling at all? If anyone can help me I'd greatly appreciate it. Thanks a lot. One last thing, should I go back to a 160 hi-flow t-stat.

 

[TheUser]

The 160* thermostat, overdrive water pump pullies, holes drilled in the thermostat, etc - in my opinion - are just band-aids for the real problem: your fan setup; it sounds like you know that.

I'm not gonna say your stock fan will not cool your engine because it might if it is set up properly. Perhaps your stock fan clutch is bad. I'm not sure how to test those, but you could find out how with a search I'm sure. Also, if your shrowd isn't mated up right against your radiator, that will cause problems with cooling. Additionally, is your air dam thing on under your front bumper? Without that on there, you'll have cooling issues too.

I have a taurus fan on my LX because it was wrecked and the stock setup will not work. I got the fan from a 93 3.8L V6 Taurus at the junkyard for $50. I run a Delta Current Controller and it cools great.

The Taurus fan pulls about 3000 cfm and I've heard the Lincoln Mark VIII fan pulls about 4000. I'd say you'd be fine w/ the taurus fan, but you might check out the above suggestions to make sure your stock fan is working properly first unless you just want an electric fan.

Also, remember that to run an electric fan, you'll need to upgrade your charging system to accomodate the added draw. I think Michael Yount runs a 95amp alt; I run a 140 amp Powermaster alt w/ a 4 gauge wire and circuit breaker in case something goes wrong. Many do the 3g alt swap from a SN95 Mustang. Check into your options on that too and find out what all of this is gonna cost before you dig in

 

[daddystang]

Thanks TheUser. I didn't know the Mark VIII fan pulled 4000 cfm, that sounds like just the ticket. Is the Mark VIII fan what I think it is, a fan off the Lincoln Mark VIII car, or is it an after market fan like the Black Magic. Is that a hard fan to install if I find it off a wrecked Mark VIII. Is there any other fan from the aftermarket that is just as good that I could buy that comes with directions and all the parts needed? Thanks.... Today I just put on a 180 Mr. Gasket hight flow thermostat. I was thinking about the 160, but I've heard they don't let the antifreeze cool long enough in the radiator because it opens and closes so often. Any thoughts?

 

[TheUser]

The problem w/ a 160* is that it may cause problems w/ your sensors. Until around 160*, the computer is in closed loop - that is, it uses it's presets to determine fuel, spark, etc. Once it gets above ~160*F, it goes into open loop - it starts using the sensors (O2 sensors being a major part), at least how that's how I understand it. I wouldn't recommend a 160* thermostat on a fuel injected Mustang.

I don't know of any aftermarket fans that flow 4000cfm. I could be wrong, but I don't think the black magic owners are completely satisfied with the fan. I don't know of any "kit" that will come w/ a fan, controller, and instructions, but people have installed mark 8 (yes, you were correct, from a lincoln mark VIII) & taurus fans and have write-ups on it. You should be able to buy the mark 8 or taurus fan's new from a ford dealer. Some also use a fan from an SN95 Mustang (the style after fox's). A couple have used a fan from a Dodge Viper, which is awesome, but I think they run around $200 or so if I remember correctly.

I recommend the DCC unit because it controls the fan wonderfully, and doesn't have an instant power spike when the fan comes on - it starts it off slowly, which is a better method. You can see: http://www.dccontrol.com for more info on that. I should note that it will take probably at least two weeks to get your controller, so plan on that. Brian seems like a good guy, probably has a lot of customers, so that may create a little longer lead time. It's worth the wait.