RX7Racer46

Hey, I was just wanted to ask what size fan to get and where to mount the fan. Any Pics and suggestions would be great. Thanks.

Aaron Cake

iTrader: (1)

http://www.aaroncake.net/rx-7/efaninstall.htm

forced inducted fd dude

wow one of my first questions.....dude you should try searching it ull find pics and posts on sizes and stuff all i know ull need to have no less then 2500cfm flowing through the radiator, my suggestion flax-a-lite e-fans their bad *** and works for most ppl iv met, but the stock clutch is the best thing to perfect with the shraud, but if your going to do it do it right and know what there is to know before anything

NZConvertible

The biggest that will physically fit on the radiator.

On the radiator...

Serach for and read some of the thousands of e-fan threads before you ask all the usual questions. That'll save us repeating ourselves again.

RX7Racer46

Okay NZConvertible, enough with the smarta** remarks. Youre answers were quite DUH!!! But thanks for nothing. If you didnt notice the link above answers just about every question but thanks for the smarta** remark.

SpooledupRacing

I just bought a 16" radiator fan for 41.00 it is a 2,750cfm puller, unlike popular believe I plan to run this at all time to keep the car cool, I may use a switch but I am the type of person who does the engine startup procedure everything.

sit in car
buckle up
turn on any and/or ann switches nesssecary to fire car
pull out of gear
make sure e-brake is on
turn key to on position
pray that it starts
initiate vehicle operation sequnce

lol either way u know what I mean, if u are intrested I will shoot u a pic of my new fan tonight

Dave

RX7Racer46

Yeah if you could that would be tight, and let me know how it works. Thanks.

Steve

Aaron Cake

iTrader: (1)

Keeping the fan on all the time completely negates any possible advantage having an e-fan might have...

ericgrau

iTrader: (1)

Actually, it really is that simple as NZConvertible said. Most kits will fit any radiator.

If your stock fan works, don't get an e-fan. You won't gain anything. Really. I ain't BSing you. Check the FAQ if you don't believe me. It doesn't do squat.

On my last '7 my fan clutch went out so I got a Flex-a-Lite Black Magic 2800 CFM fan. I had to drill 3 holes into the metal tabs on the side of the radiator. It was a piece of cake to install: Remove radiator, drill 3 holes, bolt on the e-fan, return radiator, hook up wiring. Simply removing the stuck-on bolts from the old fan was a lot harder. My aging alternator had problems handling it. I carried around a jump box which I rarely used, but I still used it.

And if you're running hot, first make sure you have an OEM thermostat. If not go to www.rx7.com ($16 + S&H) or Mazda dealer ($??, might be 2 day wait). Next turn your fan to see if your fan clutch feels loose (it should feel like molasses). If it's loose you need a new fan clutch or an e-fan. If neither of those are the problem, search the forums for other causes.

2713ddddavid

iTrader: (1)

You know a fresh set of asbestos drawers might be in order.

As a piece of fresh meat here it would be smart of you to read all the "recommended"
info concerning searching BEFORE posting and other rules and recommendations.
NZ was very polite and to the point responding to your questions, I don`t know how you got smartassed out of that. You might want to be more respectful as some of these guys will just start ignoring you and that will suck for you if you are trying to iron out a problem.

RX7Racer46

Youre right. I apologize. Really I do. I guess he just caught me at a bad moment of the day or something. Im sorry.


I dont have any cooling problems, but I want the e-fan to open up my engine bay a little. Do you think that is a good idea, or would anyone advise not to do it just for that reason. I'm just trying to upgrade everything since I have the money to spend now. GO NAVY. Anyway...she runs a 12.9 in Denver (a mile high) on 7 lbs of boost. Want to hit 10's within a year after upgraded everything and about 10-12k and I want to work on the cooling as of right now so any suggestions would be great from anyone.

Rotor Connection

iTrader: (1)

efan is killing me, i love the clean look but with out the right alternator it is a pain

deadRX7Conv

I'm still laughing at Nz's reply. He just answered the questions, simple and to the point.

1st, get the biggest radiator you can find that fits. Then, get the best alternator you can afford.
And, then consider the E-fan conversion.

A simple bump in idle to 900-1000 rpm will also help prevent battery discharge when stuck at idle in traffic with the fan running.

Upgrading your vehicle's ground and power wires will also help.

And, don't let the fan run all the time. It needs to be triggered by a thermoswitch. It should be relayed also. Soft turn on and variable speeds are other options.

NZConvertible

Running your fan constantly WILL NOT KEEP THE ENGINE COOL any better than running it with a thermoswitch like you're supposed to. This has been explained sooo many times. All it'll do is waste engine power, compromise the electrical system, make a bunch of noise and shorten the fan's life. The engine's temp is controlled by the thermostat, not the fan. If your engine won't stay cool without the fan running constantly, you have serious cooling system issues.

I wasn't trying to be smartass at all, just answering the exact questions you asked. If you search you'll find that I've posted tons of info on electric fans, which is why I suggested it. In fact if you'd read the FAQ to you'd find a whole list of threads on e-fans, put there because people keep asking the same questions over and over...

As long as you do it right there's no particular reason why you shouldn't do it. Your charging system has to be in top condition (preferably with an upgraded alternator if you have an S4) and you need to have a decent fan. Most quality fans that fall into the "biggest that'll fit" category will suffice.

An e-fan isn't really an upgrade. Compared to the stock fan it doesn't cool any better and it doesn't free up any power. Increased engine power doesn't require an increase in fan performance because the fan's only used under low-power conditions.

Personally I wouldn't bother doing anything other than preventaitive maintenance until you actually find the limit of the stock cooling system. If you don't have any cooling problems then you don't need any cooling system upgrades. But if you really feel like blowing some money, get a new radiator.

Dak

I got the 16" Perma-cool "Finger Chopper" wired using a thermoswitch.I've had good luck with it. Like others have said about searching. I'd bet there's at least 10 threads on this topic. I like the extra room to work the E-fan gives and the look of the bay with it. I'd have to agree with the others though.The butt dyno couldn't feel any diference.

drago86

Bad idea

(HINT: It's not because youll forget to turn the fan on that this setup is not reccomended)

(Clue: The stock fan avoids all of these problems untill you can afford a proper thermoswitch!)

ericgrau

iTrader: (1)

Whoa, an e-fan is going to have trouble handling all that. It pulls LESS air than the stock fan, not more. You'll be good up to 260HP on a 2800CFM black magic, according to the manufacturer. It'll handle less on a rotary, I'm sure.

If you're trying to prep for the extra heat that comes with more power, you should upgrade your radiator.

Don't forget fuel injectors, fuel pump, etc. if you exceed ~250HP. www.rx7.com has products for this. You don't have to buy their particular products, but they give you a nice idea of what you need in a user-friendly layout.

Other things for reliability include high octane gas (of course), turbo timer (or idle your car for a minute after every drive) and a knock sensor. If you retune it, keep the fuel/air mixture rich to prevent knocking. Knocking or overheating will kill a rotary quick.

SpooledupRacing

The thermostat controls the temp that the car needs to be cooled at HOWEVER the fan works hand in hand with the stat to cool the vehicle otherwise there would be no need to have a fan. the idea of the fan is to draw air through the radiator to cool the coolant down otherwise again there would be reason for a fan.

those who say the fan dont cool the car down are wrong a fan does help cool the car down. a perfect example.. say your fan dont kick on however the thermostat opens u will still overheat because u need your fan on to help drop the temps.

the thermostat helps regulate the temperature of the coolant into the engien so the ENGINE warms up to temp and the heater and what not work propely.

I will be installing my fan over the winter with a new radiator and hooking it to a switch HOWEVER in my experience unless u have a huge electric fan, if u kick it on when the temp is up to stuff it normally wont help as effectlivly to cool the car as it would if u had it on full time.

on ALL of my cars I have had it on with the key (wired into the ignition) and never have had a problem with cooling. and this was on anything from 125hp to 550hp cars.

I only plan to use a switch because on this car I have the option to easily with the new t-stat housing I have

sorry for the delay I forgot to get pics of the fan, I will do so tonight and post it up then

*btw just to add*
The clutch style fan when workig properly with the stock fan shroud is a GREAT FAN and works OPTIMUM however it does not and will not hurt to go to an electric fan to clean up the engine bay. but u will NOT get any gain in anything from doing one over the other

Aaron Cake

iTrader: (1)

We're done here. We don't need yet another e-fan topic that covers the exact same thing as the 102,371 e-fan topics that are already out there.

Anyone interested in e-fans just has to check the FAQ, and use the search feature.

Thread closed.