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BIg turbos and keeping stock cooling fans

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turboglenn

15+ Year Contributor
6,375
123
Nov 5, 2007
RIpley, West Virginia
i run a TO4E compressor housing and had to eliminate the main fan on my 97 eclipse in order to make room for the piping from teh turbo to the FMIC. well, i've tried slim line fans of all sorts and they still don't pull enough CFM to keep my car cool while running the AC (which is a must around here IMO on a daily driver )

one of the slim lines recently rubbed a hole in my radiator so i had to put a new one in on friday, but i'm wanting to use teh large stock main fan again for it's great cooling ability. and to avoid having another slim line rub through the core again

are any of you guys running a large turbo on a 2g with stock fans in place? if so can you please post pics of your piping setup? i'm really trying to get some ideas before i hack my turbo up and weld a 90* elbow on it. Especially since i'm going to be changing turbos soon, i don't want to have to cut up and weld 90's on every turbo i want to run.

I"ll have a large big exhaust housing turbo for drag racing adn going to have a smaller one on most of the time for street and road course duties.
 
i run a TO4E compressor housing and had to eliminate the main fan on my 97 eclipse in order to make room for the piping from teh turbo to the FMIC. well, i've tried slim line fans of all sorts and they still don't pull enough CFM to keep my car cool while running the AC (which is a must around here IMO on a daily driver )

one of the slim lines recently rubbed a hole in my radiator so i had to put a new one in on friday, but i'm wanting to use teh large stock main fan again for it's great cooling ability. and to avoid having another slim line rub through the core again

are any of you guys running a large turbo on a 2g with stock fans in place? if so can you please post pics of your piping setup? i'm really trying to get some ideas before i hack my turbo up and weld a 90* elbow on it. Especially since i'm going to be changing turbos soon, i don't want to have to cut up and weld 90's on every turbo i want to run.

I"ll have a large big exhaust housing turbo for drag racing adn going to have a smaller one on most of the time for street and road course duties.

Your cooling issues are most likely caused by the dead air from your FMIC, rather than the fan. Try installing a pusher fan on the other side of the radiator, or make some ducting to channel air back into the radiator.
 
I had overhearting problems with my t3/t4. Now I have one fan pulling all the time on the turbo/manifold, then the other fan pulls when the car heats up. Without the the one fan on all the time I would over heat when I stopped.
 
Well before i pulled the "main fan" i still had the same FMIC and a T3 cold side that was small enough for teh stock fan to remain intact, it would run perfectly cool with the AC on even on the hottest days.. I know that the FMIC is causing a lot of air blockage, but the main thing i'm trying to do is use STOCK fans.... like i said before i've used all different types of slim lines ( both pushing and pulling) and even had the pusher runnning with the ignition ( always on ) and it would still over heat from lack of air flow.... I know once i can find a way to get the stock fan back in it will be fine, but i'm sick of messing with "alternate fan setups" that cost way too much and eventually wear holes in my radiator

the only thing i had changed from when the car ran at perfect temps to now over heating anytime you run the AC ( more especially on the highway for some odd reason) is that i had to eliminate the main stock fan and switched to a T4 compressor housing with the new turbo... I've gone so far as to eliminate the water cooling to the turbo housing to keep heat down, added water wetter, ran straight water ( that helped the most when run with teh wetter) but 2 things i've always said to myself that i "must have" is the ability to use the AC whenever i want, and have it be a reliable daily driver,... i've even tried turning the fans on WAY early with teh haltech's adjustable fan outputs but no matter what within 20-30 minutes of driving with teh AC on, it starts to overheat

i've got a 6 bolt swap in it so the lower radiator hose causes some interference as well, but i'm sure there's some one out there running stock fans and a big turbo, i'm just looking to see some of the other setups before i hack my compressor housings up and weld elbows on them. worse case senario i'll go crazy with the ICP routing, but i'd rather keep it as short as possible... i wish i had a 90* silicone elbow to try out and see if that would help clear the fan housing and motor mount ( i've got the turbo clocked where teh outlet is facing almost straight down )

ANYONE GOT ANY PICS USING STOCK FANS AND BIG TURBOS??????????????

EDIT: i should mention that even with only teh secondary fan i can idle all day and not over heat ..it only happens when the A/C is on and the condensor gets good and hot
 
Well, i got it figured out.... I was at home depot in th eplumbing dept looking for some 1/8th NPT barbed fittings when i saw some tightly slanted 90* elbows made of rubber in 1 1/2 inch ID. i grabed one and headed home with a mind full of inspiration.

I ended up clocking the turbo to where the outlet is facing the upper radiator pipe and thn put the 90 on there slanted back towards teh fuse box. I was able to use some of my old IC pipes o mock up where i need to go with it and viola!, i've got a system that keeps both stock fans and will run cleanly under teh hood toi the lower IC pipe.

I've got to go get my welder and chop saw from my metal shop tonight so i can cut and weld up the pieces i need ( luckily i hadd one 2 1/4'' U bend left over from a previous customers pipe build ) so i should have enough pipe and silicone connectors to make it work WOOOHOOOO!!!!!!!

i'll post pics when i'm done in case anyone else is interested in doing something similar so they can keep their fans and run their AC, while having a big 'ol TO4E compressor hanging from their header.
 
I promised pics when i got it al set up.... I built the piping 2 days ago and made a few mods to it yesterday after the home depot pipe blew out at 17 PSI ( and probably due to some heat from the manifold )

I got the main fan back in and since the haltech doesn't control 2 speed fans, i wired both channels to one relay to get max airflow from it and it's workign great.... things are a little cramped in the engine bay now, but i'm happy with the way everything turned out. Except the new location of the air filter.. I use to have it routed into the front bumper in the opening next to the fog lights, but the new IC pipes prevent me from using my old set up.. So untill i make some new pipes the filter is directly off the turbo ( sadly sucking hot air right from the radiator ) but hey, that's what the intercooler's there for right ;)

the only thing left to do is clean up/grind down the welds, make a mount for the spare Blitz BOV, i dont' like where the one is right now, and i eliminated the 2nd one that was on the other pipe from the turbo that i just replaqced to make room for the fan.... then i have to send it off for CHROME!!!!!!!!

the next step is to re-design an upper IC pipe and have it chromed as well ( the last one got lost by teh chrome shop that went out of business after i sent it to FL to have it done ) so next time i'll wait the 3 weeks to have it done locally


here's the pics

elbow off the compressor housing
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where the pipe routes down to the lower IC ipe that was already there... you can see the large factory fan sitting there nicely waiting for me to be able to run the a/C come summer, woohooo!
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the new filter location
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Looks like very clean work. If you would like some more inspiration, try out short route piping. Alot of guys run short route piping which helps clear up alot of room in the area that you had trouble with. The turbo is able to be clocked down, where the pipe then makes a 90* turn to the driver's side, through a front mount, back through the stock coolant bottle location directly to the throttle body.
 
Looks like very clean work. If you would like some more inspiration, try out short route piping. Alot of guys run short route piping which helps clear up alot of room in the area that you had trouble with. The turbo is able to be clocked down, where the pipe then makes a 90* turn to the driver's side, through a front mount, back through the stock coolant bottle location directly to the throttle body.

that's actually what i wished i could have done, but both teh inlet and outlet on my intercooler are on teh passenger side of the car... it's the same core that buscher sells and that's poopular on the grand nationals.. i'm just happy to have the fans back even if i have to take more stuff off the car to work on it.... I LOVE my a/c and now that i should be able to use it again i will be much happier.. now i just need ot get a few more parts that i had sold off a while back, get some things chromed, new carpet, re-shoot teh car in the same color after doing some body work and i'll be satisfied.. oh and i almost forgot a full TRE trans with a kaaz or Quaife diff.. i think i'm only abvout 5k away from having it exactly how i want it and being able to break teh 11 second barrier.... i've hit 12.08 @ 117 on ~ 19 PSI spinning 26 inch slicks all through 2nd gear ( at least spinning one of them anyway ) I would have turned the boost up but i would have jut MPH'd higher and probably still been in teh 12's or slower from wheel spin

my entire goal on this car was to get kicked out of the track for going 11' without a cage and then never drag racing it again.. i prefer road course so much more...which is part of the reason i want a smaller turbine section on my turbo and would prefer a KAAZ over a quaife.. the quaife is stronger and can handle harder launches, but it will still turn to an open diff if you lift a wheel on hard cornering.. you can set the clutch style diffs to hold even when one wheel loses contact all together..but teh KAAZ is known to break at the ring gear on hard launched with slicks ( even though quaifes website lies and says theirs does teh same i know from experience that it doesn't )
 
Guess it's true when you said you've been out of the game for a while. :D Check out the (relatively new) e-bay intercooler kits specially for 2Gs. They are side flowing, huge, pipes, couplers, clamps included. All for about $300 shipped. They are very popular.
 
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