Aftermarket cooling fans ?

[Boston]

Hi I searched and checked under FAQ but couldn't find an answer.

I bought some mishimoto slim line aftermarket fans. I have a EVO III 16g and the top heat shield over exhaust manifold.

1st question: push pull combo is best, but right now the fan is pushing air towards the radiator so pulling air from in front of the exhaust manifold andpulling by the intake side. Should the fan be blowing air towards the exhaust manifold instead of pulling that air towards the radiator?

How have you positioned yours? I had a shop install and wire them for me but my engine bay is always burning hot ( more than other Turbo bays I've owned) and it almost overheated on me twice today.

2nd question: how else to keep temps down? The bay is so hot I am worried about it. I installed a carbon fiber vent to get the radiator some air as the intercooler blocks the bottom bumper opening, but any other advice would be welcomed. Thanks in advance!

 

[9!'clipseDOHC]

So I am at a local shop getting an alignment dne and they said they can completely remove the thermostat to help the system from overheat g. Has anyone else done this?

Not having a thermostat can actually cause overheating too. Also to point out, a lower thermostat can help your car run cooler but it won't stop overheating. Make sense? If your car is operating normally and not overheating, a lower thermostat can lower your operating temps. But if your car is overheating (not operating normally) then a lower thermostat won't help your car run cooler and you need to look into other sources. A bad/stuck thermostat could cause overheating though.

http://www.dsmtuners.com/forums/newbie-forum/282968-car-has-no-thermostat.html
http://www.dsmtuners.com/forums/newbie-forum/130293-safe-run-no-thermostat-merged-8-7-no-no-no-no.html

 

[Boston]

So I had a new thermostat but in, but the two mishimoto slinking fans: only the one on the passé get side turns on for cooling. The one on the driver side only turns on (now both pulling air though) when really bad, by which point it is usually too late or slightly overheating.

Anyone know a wiring diagram for the mishimotos where BOTH will come on at full power?

I was driving home fie, but after constant 75 mph on the freeway home, one or twice getting on it to pass people, it started to overheat.

Seavee thanks for the tips, I also cut out the front black trim of the bumper after I got home.

But along with the fans wiring help, the only other thing I am thinking is should I upgrade and get the matchin mishimoto radiator? Any thoughts? My oem one came new with the car last year. But I have the 16g on it now. Any one know if the mishimoto mounts deeper or how if it has clearance issue? If it is much larger, it will push the fans and it closer to the exhaustanifold.

Thanks in advance guys!

 

[scott90gsx420]

I cant give you a diagram but i can tell you that running them straight to the battery with a toggle switch between them works great for me.. Make sure you get a fuse-able connector in between the battery and the toggle switch.

Its nice because when i see her warming up i don't have to wait until its ALREADY overheating to have them come on. I see the temps rising i kick them on, if i know im getting ready to romp on it i kick them on..I do this until the temp gets to normal again and turn them off.

The biggest thing is you HAVE to remember to kick them on. For most of us that's no issue as were all OCD over our cars but its just a warning..

 

[97eclipseNT]

I have both of my fans on a relay, which is controlled by the stock fan wiring. This way the fans are controlled like stock, but always have a full 12-14 volts. Also if your still having overheating issues, buy or make a fan shroud. This makes the fans much more effective.

 

[9!'clipseDOHC]

So I had a new thermostat but in, but the two mishimoto slinking fans: only the one on the passé get side turns on for cooling. The one on the driver side only turns on (now both pulling air though) when really bad, by which point it is usually too late or slightly overheating.

Anyone know a wiring diagram for the mishimotos where BOTH will come on at full power?

I was driving home fie, but after constant 75 mph on the freeway home, one or twice getting on it to pass people, it started to overheat.

Do you have the fans wired up like stock? If so that is your problem. The driver's side fan is for the AC and only turns on under certain conditions and has different speeds based on those conditions. Here is a break down of how it works:

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Check out this thread for more info:http://www.dsmtuners.com/forums/newbie-forum/261629-fans-running-all-time.html

Also for instructions on how to wire them up properly, check out this tech article: http://www.dsmtuners.com/forums/articles-electrical-wiring/233644-fan-wiring.html

But along with the fans wiring help, the only other thing I am thinking is should I upgrade and get the matchin mishimoto radiator? Any thoughts? My oem one came new with the car last year. But I have the 16g on it now. Any one know if the mishimoto mounts deeper or how if it has clearance issue? If it is much larger, it will push the fans and it closer to the exhaustanifold.

Thanks in advance guys!

An aluminium radiator, regardless of the brand, is probably going to be a little thicker and if anything move the fans a little bit more into the engine bay.

The biggest thing is you HAVE to remember to kick them on.

And for the same reason I will never use a toggle switch for my fans.

 

[SeaveeDSM]

.... Finally if you still have issues you can actually cut additional slots above that, and epoxy some aluminum or SST mesh behind the slots. You can also paint the mesh to match the car color. This adds a significant amount of additional air flow to the radiator especially if using an FMIC. The drawback is you are cutting the front bumper fascia and if you hack it up badly it can look bad. Will post some pics of same in the next day or two for you.
Good luck.

Not the best pics but this gives you the idea. These openings above the standard fascia opening made a MASSIVE difference in air getting into the radiator. I removed the fascia and used 2" wide blue painter's tape to make the outlines then used a dremel with a cutting wheel to cut. Followed that up with some sandpaper to smooth the cuts. I then got some SST mesh and glued it in from the back using 3M 5200 Fast Cure Marine Adhesive. It is super stong but dries flexible which I think is better in this application than an epoxy which would dry very rigid.

Just behind the Mitsu logo I glued in vertically (also using the 5200 adhesive) a 1/4" thick X 1/2" wide X 5" long aluminum spar that I first hammered/bent to conform to the inside curvature. Horizontally and below the Mitsu logo I glued in another aluminum spar about 24" long, similarly bent to conform to the slight curvature first. The two spars add some structural support and rigidity to the fascia. Again I think its important to use an adhesive that will be strong but not dry totally rigid as it might otherwise crack the facia's paint if some pressure is applied. At some point when I get next take the fascia off I'll do a separare "how to" thread on this with detailed pics inside and out....

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[scott90gsx420]

Looks pretty good man.. Just a thought you should have cut the top of the facia hole so it curved with the hood.. Would have flowed better witht he car IMO.. Either way looks good bro..

Lol i like that the 1g's have a plastic thing between the headlights i removed it for a few days when my rad fans weren't working... Maby i should try it now with them working and see how it helps with temps ..

How are temps staying?? And where did you get that mesh i need to pick some up im tired of the mad bugs in my IC ..

 

[Paching]

Why won't stock fans fit? I have a 16g turbo, j pipe and headers and both stock fans mounted on a wider aluminum radiator with a fmic. Granted I had to cut off about 1/4 inch on the mounting locations on the passenger side of the radiator and bent inwards the metal fan support, but that makes the fan sit closer to the radiator which is good for cooling purposes..ohh and both fans wired to run simultaneosly on high in Florida.. no overheating issues whatsoever on a 308hp tune