so i got the koyorad N_flow aluminum radiot for my 89gtu. now i want to get rid of the fan shroud and clutch fin system.
what E fans will mount up best ive heard something about a 90's Buick but m not sure.
also how would i wire it up i could wire a manual on off switch but if there an easier way let me know guys thanks

 

I'll be "that guy" on this one. The topic of electric fans and wiring them in has been covered ad nauseam on this forum. There are lots of junkyard fans to choose from that people have used with success as well as some aftermarket ones. A manual on/off switch is possibly the worst way to wire in an electric fan for a street driven car, especially given your location says Las Vegas. You should wire the fan with a fuse, relay and a thermoswitch. Or an aftermarket fan controller, which essentially just comes with all of that packaged together.

Please make use of the search function.

 

Good choice on radiator. I agree with Jerry about the switch to turn the fan on and off. The S5 coolant gauges only has 3 positions, off(cold/bottom), engine running(middle), and time for a new engine(anything over the middle). Unless you have an aftermarket gauge using a switch to turn if off and on yourself is a VERY poor idea. I myself have done it before, but i had an aftermarket gauge(prosport) that had warning functions(audio and flashed gauge different colors) so that I could be let known to turn the fan on if I didn't pay attention. That being said, I went back to the good old reliable factory mechanical fan and clutch assembly.

 

It mightbe easier to just get an aftermarket one in kit form. I'v got the Koyo N-flow s5 rad modded to fit my FB, using a davies craig 16" fan and controller. Very easy to install and adjust, has no problem keeping temp in the most adverse conditions. Came with relay, adjustable switch, thermocouple mounting hardware and instructions. Fan comes on at the adjusted temp and stays on untill its 5c cooler.

 

i have auto meter gauges i just want rid of the fan shroud to open up the engine bay

 

I personally swear by using a Merc Villager 2 speed fan as the shroud itself covers the whole cooling fin area of the rad itself.
You have to trim plastic on it to fit that that is a small job that reaps big benefits when you see the finished product.

 

I also use the Villager, despite the fact that some have now renounced it as a good choice.

 

The shroud isn't strictly necessary if your fan is a decent size. Mine keeps temps below 95c easily in 40c weather. Davies craig actually state that the fan is to be used without a shroud. Ive got mine covering 100% of the first pass and the rest of the fan covers atleast 90% of the 2nd pass.
I quite like the "shroudless" design (there is still a shroud on the fan) as it provides less restriction to the apparent wind when rolling. When the fan is on it just means that instead of even airflow through the whole rad with leaks, you are getting a more concentrated and 100% positive airflow through the area the fan covers.

Thats my theory anyway.

 

A shrouded fan is always more efficient and if fitted with bypass flaps is not a significant restriction to airflow.
Now, it may be you have enough overhead to absorb the inefficiency of the bare fan but it could be improved with shrouding.

 

..and essentially this is why I prefer a fan with a shroud.This is why I went with my choice.
I mean realistically if you think about it,if you plop a fan on in the middle of the rad with no shrouding the fan is just sucking air through the fins that it covers.
Now,with a shrouded fan you get the fan to at least take air from all areas of the rad and inhale it through the fins and then spit it out the fan.
With a controller on this setup you can get hardcore efficient cooling.

 

Although I have no objection to mods for aesthetics reasons ("I want to get rid of the shroud"), to ignore the tech aspects ("I'll wire in an ON/OFF switch") is silly and counterproductive.

The problem with the thermoclutch set up is that it's an inefficient, brute force (i.e., "always on") solution...there's no arguing that it works, it just works stupidly.
Without getting elaborate or expensive, it's easy to set up a dual speed fan (Taurus, Villager, Volvo or Lincoln, for example) that operates reliably and cleverly. And without your help or intervention.
Six years ago I did it this way.

 

Clokker raises a good point and I actually had this Happen.
I wired in a toggle switch to activate the fan.
Car floods,have the fan off to save power when cranking..then get the car started and forget to turn on the damn fan.
In a matter of blocks the car was starting to get hot and it went to 230 real quick.
I was very lucky to notice the temp gauge and pulled over and attended to it...Crapping piles of adobe...

Moral of the story: do not depend on your memory to hit a toggle switch for the fan.It can be overlooked rather easily.
Simply, DON'T install a manual switch for it..save your engine.
Either wire it to always on or have a controller..

 

I pretty much done the same as this. Davies Craig 0444 controller. Works mint! No shroud. No problems

 

I modified my stock shroud to fit the koyo n flow with shroud. https://www.rx7club.com/2nd-generati...hroud-1063062/
Those spacers I used can be bought from home depot, also the foam I used to seal it all up.
It will be cheap and work better than any electric fan. You could still buy a used electric fan where you don't know how much longer it will last. Take the time and money to wire up everything, I don't know how picky you are for nice wiring. All that money and time for freeing up that extra space, maybe 1-2hp, and having to remember to turn your switch on when street driving
The way the factory radiator and fan are designed, you really need the shroud. Most cars the fan is flat right next to the radiator. The angled radiator and a fan about 10 inches away with no shroud will do close to little.

 

No street car should have a manually switched fan.