fan delete

[Q_BMW]

hey guys
not sure what a fan delete is ? what does it do and is it an easy DIY ?
Q

[Kevin325i]

http://understeer.com/ go there then on the left side click on "Fan Mod" in the how to stuff. It's pretty easy but you need some specific tool and the fan is tricky to get off. It's also tricky to flush the coolant if you don't know what you're doing.

Kevin

[007ben]

I got it off with a 32mm open ended wrench and 8mm allen wrench and the help of a friend... nothing to special.

logun.org has some good info for fan removal.

[skawful]

what does it do?
whats the downside?

[Kevin325i]

It reduces the rotational mass. It's like putting on underdrive pullies, but cheaper. The downside is you reduce the cooling efficiency below like 10 mph. So if you're in stop and go traffic a lot or in a very very hot climate this wouldn't be for you.

Kevin

[bigred318]

nice dude maybe i will have to look into doing this!! i dont have to much stop and go, and i live in washington haha

David

[007ben]

I've thought about it but i think it gets to hot in the summer and hell I don't want to deal with the reinstallation of the fan if i ever endup in a hotter climate and/or stop-n-go traffic.

[Autotechnica]

Why don't you guys just convert to an electric fan?

[007ben]

1.) I'm lazy
2.) Money
3.) Too little gain for me.
4.) I'ts a lotta work when I don't have tools and crap of my own

but other than that its a great idea. and i will keep it in mind.

[Kevin325i]

The fan delete is an electric fan conversion, sorta. I've been trying to find some steeper angle fins for on my current fan for some extra cooling. Also I need to wire up a manual override for the fan so I can flip it on and leave the car sit between runs at the autocross to see if it helps at all.

As it stands the needle never goes more than half way. *knock on wood*

Kevin

[thekid]

Originally posted by Kevin325i@Jul 6 2004, 11:42 PM
The fan delete is an electric fan conversion, sorta. I've been trying to find some steeper angle fins for on my current fan for some extra cooling. Also I need to wire up a manual override for the fan so I can flip it on and leave the car sit between runs at the autocross to see if it helps at all.

As it stands the needle never goes more than half way. *knock on wood*

Kevin

I don't think that is really needed. Just shut the car off and open your hood up, all the cooling you need right there, I don't think that any fan (that you could put on a car and still have on during an auto-x run) could move enough air to cool the car at rest/idle better than that.

[007ben]

as long as temp doesn't pass the mid point your golden.

[thekid]

Originally posted by 007ben@Jul 7 2004, 10:11 AM
as long as temp doesn't pass the mid point your golden.

exactly, you dont want to auto-x with your temp gauge below middle or above it for that matter.

[Autotechnica]

Originally posted by thekid+Jul 7 2004, 10:09 AM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (thekid @ Jul 7 2004, 10:09 AM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-Kevin325i@Jul 6 2004, 11:42 PM
The fan delete is an electric fan conversion, sorta. I've been trying to find some steeper angle fins for on my current fan for some extra cooling. Also I need to wire up a manual override for the fan so I can flip it on and leave the car sit between runs at the autocross to see if it helps at all.

As it stands the needle never goes more than half way. *knock on wood*

Kevin

I don't think that is really needed. Just shut the car off and open your hood up, all the cooling you need right there, I don't think that any fan (that you could put on a car and still have on during an auto-x run) could move enough air to cool the car at rest/idle better than that. [/b][/quote]
Think again, opening the hood doesn't cool the radiator at all. With the help of an electric fan if my engine were to start overheating, the coolant would cool immediately right after the fan were switched on. "understeer.com's" fan delete does not include the addition of an electric fan. He simply removes the fan completely and uses water wetter to keep the coolant cool. I've tried this and I'm a bit paranoid about my motor overheating. It's not worth damaging your motor just to avoid sucking up some extra current. Get the electric fan. I drove to the track before I had the electric fan installed (removed clutch fan), my engine started to overheat in traffic, I had to pick up speed (80km/h+) then it started to cool down again. Trust me, you'll be amazed as to how much of a difference a fan makes. It's almost like running your CPU in your computer without a cooling fan.

Bry

[bitcore]

Auto is very very correct. I'm rather paranoid about overheating too.