eff e-fans!

[Carl H]

im through with efans, i could never get a setup to work properly that would keep the car in an acceptable heat range...that and my temps would be all over the place and i could never get it to stabilze after a good pull.

soloution?

refit the clutch fan, always moving air...cant go wrong.

ive had a few hurdles to cross while doing this but its turned out to be a success, coolant temps are a STABLE 81 degrees and will rise up to 86 in traffic but quickly come back down when underway.would i sudgest doing this to anyone? no.also dont mind the welds, they are kinda gross but i had to make do with what i had, mig welding Al is uber hard on a dc machine...

enjoy some pics:



upper rad hose inlet, tight tollerances.

cross over pipe to bring coolant back over to the std inlet.

[bps71]

Well try to hot wire the efans to run all the time ... same effect as clutch fan but still save drag on motor

[Blown240sx]

lol idiot you can wire e fans to stay on all the time when the car is on. Clutch fan on an RB

[Carl H]

no not really, if you had any insight you would realize that at highway speeds pusher fans actualy block air to the rad because they cannot move as much as will be pushed thru the rad at speed.hot wiring does not work, ive tried it it overheats even faster.and honestly i dont notice any more drag on the motor than when i had no clutch fan...so i could care less.the poompteenth of a hp gained from removing the clutch fan is simply not worth it to me, ensuring proper cooling on the track is.

[Joe]

i dunno what to tell you carl, i dont have any overheating problems with my pusher electric fan setup.

[S14-NEO]

Carl's car overheats cause its a RB20 and not a 25..lol

[bps71]

my reasoning on removing the clutch fan is prob less for drag than i let on and more for I have had 3 shatter and take wp with them when from the vibration when they went. to me its cost effective to take them off and I have never had an issue with heating up with push or pull efans. on any motor from i4's to v8's.. sounds like u had a bit of bad luck . sorry to hear it hope it works out for you .

[Blown240sx]

Funny since my buddy has a RB25 with dual pushers and on the highway he runs 65-70* C Lower than the factory 80 C.

[BoostFab]

dam carl did you jbweld those radiator endtanks? sh1t i'll weld them for you.

[OpeLok]

I've never exceeded 91*C on the road or highway with my 20. I run dual f.a.l push fans. They are overkill type fans, but they do what they do. Have you taken a closer look at your cooling system all together? Are you getting the high temp on track or highway? Track I could understand, but not highway. I've never had a problem even when outside air temp is 118*F. Kamin run's his on the track in similar temps and never heard a peep out of him. I guess this is all worthless jibba jabbah now cause you went crazy with the welder already

[krayton]

awesome job carl. im doing the same, and ive had problems with E fans. no one ever has problems with clutch fans, overheating goes with electric fans.

i can see using E fans, but when u start making some good power and beat it up, clutch is gonna be the way to go

u gonna do a shroud soon? id consider that top of the list

[Darius]

If your buddy is running lower than stock temperatures it isn't a good thing. It means his thermostat is stuck open. geez tell him to fix that.

[rustbucket]

I have two 10" pushers on my 25, one is wired in to a thermostat and the other to switch. I only had overheating problems when I used the stock, clogged KA radiator. When I upgraded to the Koyo there was no problem at all, I've never even used the fan with the switch.

[Carl H]

blown240sx - what kind of thermostat does your buddy run, ive got a factory temp 76.5c one in my car which might explain why the temps are higher, did i mention that my heat sucks because it runs so cool?

opelok - i dunno im glad the efans work for you because no matter what kind of fans i had it still wouldnt keep temps below 90*c which is too high for my tastes.

krayton - yeah apparently everyone thinks we are retarded for doing this but you know what the fc turbo guys who ditch their clutch fan for an e fan overheat, they put it back on and the problems go away.

honestly hate all you want you act like i had a ****ty cooling system setup but i had a koyo Al radiator with DUAL spal 12" fans which pushed 1750cfm apiece, thats 3500cfm of air which SHOULD have kept the car cool but didnt and not to forget the 16psi cap (1.09bar vs factory .9).as for as paracitic drag from the fan i have LESS because i have less electrical load on the alternator so it doesnt have to work as hard, there for less resistance from that is generated as voltage/amperage drops.im sorry that most of you guys feel that im stupid for doing this but its worked better than ANY efan setup ive had on either my s13 my s14 the first iteration and the s14 the second iteration.

[rustbucket]

We dont think your "stupid", we call it "special" here.

Who cares what everyone else thinks dude, do what works for you and your car.

Ive spent almost $10k dollars building a rusty p.o.s. car that only cost me $700 and looks like it was crapped out by godzilla after having anal with a corvette.

[Carl H]

rustbucket - are you using a proper cooling temp gauge or the stocker? if the stocker then sorry your opinion isnt valid as ive seen temps shoot to 120c before the stock needle moves...i would get a proper temp gauge man it might be running hot. lol and thats a terrible analogy...

[rustbucket]

Stock as in RB or KA? Running the stock R33 GTS-T cluster. I'll shoot it with a IR heat gun and see what it says.

[Carl H]

eh doesnt matter what cluster they all suck.the nissan temp gauge has 3 spots it goes to: cold, operating temp, and fuxored.its a non-linear gauge which sucks alot its very inaccurate.

[rustbucket]

Guess ill get an aftermarket one when I stop being poor, just spent all my car $ on the Greddy intake manifold that was for sale in the classifides.

[cdorhout]

Is that clutch fan effective without the fan shroud? I'd think it wouldn't be pulling air through the radiator effectively with one?

[Carl H]

yes it is suprisingly effective but its proly due to the fact that its so close to the rad, a sr or ka without a shroud is worthless.

[Blown240sx]

blown240sx - what kind of thermostat does your buddy run, ive got a factory temp 76.5c one in my car which might explain why the temps are higher, did i mention that my heat sucks because it runs so cool?

Hes running a Nismo Thermostat. Also if you have no heat coming out in your cabin sounds to me you have either air int he lines, bad thermostat or bad heater core which all can cause cars to over heat.

[Carl H]

i didnt say i had no heat i just said it wasnt the typical melt your feet off nissan.the low temp thermostat is proly why the temps are so low...

[NISMO_RB25]

I have relocated my KOYO to allow dual FAL puller fans to fit and clear. Hopefully in the next few weeks I will get a HOW TO written up and posted for anyone who is interested. It was a pain in the butt to do, but the results should be worth it.

[Sil240]

Carl- Fock'em if it works for you, go for it.

I'm gonna have a great time trying to get my fans to fit. I have twin SPAL 13 inch pusher fans. But I hope I dont have to use both because I dont have any AC and my intercooler isn't really that big to block all of the air. But I haven't fitted it to see whats up with it. And I have a custom Be Cool Aluminum rad, heard that they are pieces of shyt but if it holds water then it works for me. It was F.R.E.E :-)

[Eikon]

Carl,

I'm impressed that you got the cluch fan to fit in there. That's a tight fit.

Do you have any ducting panels? I've not installed them yet, but it's on my list. I understand that those ducting panels do wonders to keep the airflow going through the rad and not over the top or under the bottom of the rad.

[RB20DETodd]

KOYO COPPER

[Kansei240sx]

Seems it works for you so i wont give you **** about it, good job buddy. You're lucky it works so well with no shrouding becuase usually those big clutch fans are just about that without shrouding...trash.

I've got a setup running with E-fans but it is a copper koyo, E-fans, Modified Rad support so it all fits...Ill post pics when my car is all back in one piece.

[midnightsliding]

*****ng clutch fans are the ****, but not with out a fan shroud's

[Carl H]

eikon - i have an upper rad pannel made by rigid racing off ebizzle but thats bout it, i need to fab up a lower plate for the bottom...i think im gonna make it into a 'scoop' shape so it forces air up into the rad space to provide cooler air than what comes out from behind the fmic.also to all those people who claim that their cars 'dont overheat' using efans, what gauges are you using to monitor coolant temps...i have a pfc as well as defi gauges mounted in the head.lol yes i know i need a shroud that is on the list of todo's before summer rolls round.