Ebay Fan Mod - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 08-15-2008, 10:14 AM   #1
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,809
Total Cats: 1,780
Default Ebay Fan Mod

I came into possession of two 10" ebay fans and figured I'd give them a go. It was apparent when I bench tested each (oem and ebay) that the ebay fans, even at only 10" in diameter, pulled more CFM due to design and rpms.

So then as I was overthinking all my options, I decided the best way to ensure it pulls air out of the rad was to shroud it, since it's much smaller than the face it needs to pull from. So, as usual, I came up with something brilliant. I decided to gut the stock fan shroud and put in place, my ebay guts.

It took me exactly 45mins from start to finish. this included walking up 3 flights of stairs a few times and waiting for a soldering iron to heat up, and playing with different combos of motors and blades.

Simply, unbolt the blades and motor. Then I had to make two holes and screw in the ebay and attached the blade. The end. Soldered the oem connector in place and presto.

It does looks silly being so small and all, but when I jump the fans, this little guy spins much faster and pulls tons more CFM. Eventually I'll grab a cheap 12" and throw those blades on it.

Name:  081508_08361.jpg
Views: 29
Size:  71.4 KB

Name:  081508_08431.jpg
Views: 29
Size:  74.3 KB
Braineack is offline   Reply With Quote
Old 08-15-2008, 10:40 AM   #2
Miotta FTW!
iTrader: (24)
 
Splitime's Avatar
 
Join Date: Jun 2006
Location: Chicagoland, IL
Posts: 4,292
Total Cats: 26
Default

It's so tiny! So cute!!! AAwwwwww
Splitime is offline   Reply With Quote
Old 08-15-2008, 10:52 AM   #3
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,809
Total Cats: 1,780
Default

sure is. ill get some 12" to replace it soon.
Braineack is offline   Reply With Quote
Old 08-15-2008, 10:56 AM   #4
Elite Member
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

Nice work. Let us know if you see any difference in your CLT.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 08-15-2008, 11:03 AM   #5
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,809
Total Cats: 1,780
Default

Quote:
Originally Posted by levnubhin View Post
Nice work. Let us know if you see any difference in your CLT.
well the only time i ever activate the fan is when im idling at a redlight, so ill be able to tell you if it drops the temps quicker before I start moving again
Braineack is offline   Reply With Quote
Old 08-15-2008, 11:24 AM   #6
Senior Member
iTrader: (14)
 
brgracer's Avatar
 
Join Date: Nov 2004
Location: Ambler, PA
Posts: 1,275
Total Cats: 1
Default

Nice work, but methinks you mentally ********** about things a lil' much.
brgracer is offline   Reply With Quote
Old 08-15-2008, 11:27 AM   #7
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

I don't get it. Why change fans, do you have a problem with over heating while stationary?
jayc72 is offline   Reply With Quote
Old 08-15-2008, 11:38 AM   #8
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,809
Total Cats: 1,780
Default

It was free and i wanted to try it.
Braineack is offline   Reply With Quote
Old 08-15-2008, 11:42 AM   #9
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

Fair enough. I just see a lot of people jumping on these slim fans and I wonder why. With the godspeed rad I was able to get the OE fans to fit with minor (needed) modification to the rad. I've got the big RB swaybar and there is still a (very) little bit of clearance.

Carry on.
jayc72 is offline   Reply With Quote
Old 08-15-2008, 11:57 AM   #10
Elite Member
iTrader: (2)
 
Newbsauce's Avatar
 
Join Date: Jul 2006
Location: NoVA
Posts: 2,304
Total Cats: 2
Default

Quote:
Originally Posted by jayc72 View Post
Fair enough. I just see a lot of people jumping on these slim fans and I wonder why. With the godspeed rad I was able to get the OE fans to fit with minor (needed) modification to the rad. I've got the big RB swaybar and there is still a (very) little bit of clearance.

Carry on.
I don't think people buy them for the size... at least I didn't. There is something re-assuring in the fact that your fans are blowing enough air to create a small hurricane under your car.
Newbsauce is offline   Reply With Quote
Old 08-15-2008, 12:08 PM   #11
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,809
Total Cats: 1,780
Default

really, it's a lot easier to zip tie two $20 fans onto the new rad then to bother with the stock ones. The fact that you should never even need fans from the enormous size of the godspeed coupled with cheap *** high power fans, you can rest assure that your cooling system is more than "up-to-snuff"

I plan on tracking my car so heat management is a must for me. If a $20 fan works better than the oem one when i'm +130mph WOT on the front straight, surely I'm going to invest the $20.

I got these for free (plus shipping) and i wanted to try my idea out. I don't think the 10" fan in this shroud is ideal, but i like it better than being mounted directly onto the face of the rad. This give it room to pull from the entire shrouded area. Likewise, when I put a 12" blade on there it should work great. Like I said, I don't want to mount them directly onto the rad, there is plenty of surface area that would not get covered this way. And I dont want to use the plexi-glass sheet method as it blocks airflow from exiting the rad all together. and I dont think stepping it off an inch would help, or be as easy as this method.

I actually tried mounting the new motor with the stock blade, but the overall weight of the stock blades caused the motor to bog down and spin slower. I couldnt tell a difference with the ebay blades on the stock motor, so i used the ebay motor.

but with very little time/money invested, I know that I can go pick up a good 12" blade and have an easy functional shroud setup for it.
Braineack is offline   Reply With Quote
Old 08-15-2008, 12:27 PM   #12
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,037
Total Cats: 406
Default

no shroud
path of least resistance
can you make a little shroud adapter?
y8s is offline   Reply With Quote
Old 08-15-2008, 12:28 PM   #13
Elite Member
iTrader: (12)
 
Join Date: Apr 2008
Location: Longs, SC
Posts: 2,583
Total Cats: 13
Default

Doesnt a good amount of effectiveness of the fans come from its fit inside the shroud? I would think your orginial thought of the ebay fan being too small would be correct and that putting inside a larger shroud would do nothing. Maybe even make it less effective. Its not going to pull air from the area between the ends of the blades and the shoud.
icantthink4155 is offline   Reply With Quote
Old 08-15-2008, 12:32 PM   #14
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

Do the fans have any effect on cooling at +130mph WOT? How many CFM are flowing through the rad at speed? More than what a couple of 12" fans can hope to achieve I'd guess. I'm sure they are the bomb in +30C stop and go traffic.

Do what you want, I just think you are fixing something that isn't broken. IMHO
jayc72 is offline   Reply With Quote
Old 08-15-2008, 12:34 PM   #15
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,809
Total Cats: 1,780
Default

The 10" fan itself is tiny as hell in relation to the rad surface area. the shroud attached to the fan, is more of a cage, preventing you from slicing off your finger tips.. thus is why I want a 12" blade.

Even so, put your hand between the fan blade edge and the shroud and tell me it's no pulling air through there as well. Maybe not as well as if a 12" blade, but it still has a "sealed" area to create a vacuum for. Once mounted, as is, this fan is creating a small windstorm inside the engine bay. the stock fan; a light breeze. I'm positive it's doing a better job than simply flush mounted to the surface.

With that said, expect to see a 12" blade on there fairly soon.
Braineack is offline   Reply With Quote
Old 08-15-2008, 12:41 PM   #16
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,809
Total Cats: 1,780
Default

Quote:
Originally Posted by jayc72 View Post
Do what you want, I just think you are fixing something that isn't broken. IMHO

possibly yes. Does it hurt anything to have a more efficient cooling fan? no. My a/c will work better and the temps will drop quicker if said fan turns on.

My stock fans have work fine for me for 13 years. I never really had plans to upgrade, however I've had overheating issues on the track at 120mph before. If I had simply strapped the fan to the face of the rad and posted, hey "I got a new fan" would you have bothered posting?

I thought I came up with a creative method of mounting the fan while retaining some sort of shrouding and thought I'd share.
Braineack is offline   Reply With Quote
Old 08-15-2008, 12:46 PM   #17
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

Quote:
Originally Posted by Braineack View Post
possibly yes. Does it hurt anything to have a more efficient cooling fan? no. My a/c will work better and the temps will drop quicker if said fan turns on.

My stock fans have work fine for me for 13 years. I never really had plans to upgrade, however I've had overheating issues on the track at 120mph before. If I had simply strapped the fan to the face of the rad and posted, hey "I got a new fan" would you have bothered posting?

I thought I came up with a creative method of mounting the fan while retaining some sort of shrouding and thought I'd share.
Don't be cranky.

You are absolutely correct, having a more efficient fan is better. I just don't think that your overheating problem at 120mph will be fixed with a new fan.

I'll agree, your method of mounting is a good one, I'm surprise no one thought of it before.

Would I have posted if you had said "I got a new fan" absolutely. This isn't the first time I've asked someone to justify changing out a perfectly good OE fan for a $20 ebay unit.

Ironically a couple of years ago I bought an a/c fan from you Installed, but still not wired!
jayc72 is offline   Reply With Quote
Old 08-15-2008, 12:59 PM   #18
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

This thread is pretty informative.

I am also debating weather or not to buy new fans for my mishi rad.

With my stock rad, and the car stationary, the fans cannot drop the temps of the coolant. I hope that with the larger rad + stock fans this wont be a problem anymore.
Saml01 is offline   Reply With Quote
Old 08-15-2008, 01:43 PM   #19
Junior Member
iTrader: (1)
 
Join Date: Jun 2007
Location: Plano
Posts: 83
Total Cats: 0
Default

I used to think this way too until I saw this:
http://www.vidilife.com/video_play_9...ta_P_demo_.htm


http://www.vidilife.com/video_play_9...lta_P_demo.htm

It's not super scientific but you get the idea. Bottom line, you want shroud with fans unless your radiator is the first heat exchanger and the bumper is not blocking the airflow.

Quote:
Originally Posted by jayc72 View Post
Do the fans have any effect on cooling at +130mph WOT? How many CFM are flowing through the rad at speed? More than what a couple of 12" fans can hope to achieve I'd guess. I'm sure they are the bomb in +30C stop and go traffic.

Do what you want, I just think you are fixing something that isn't broken. IMHO
tilt is offline   Reply With Quote
Old 08-15-2008, 03:04 PM   #20
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,809
Total Cats: 1,780
Default

what i dont like about that shroud is that it's only stepped out 1/2" from the face of the rad. utilizing the stock one, tapers the air from the edges inward...should work better (with a 12" blade

but like his video shows....having an IC, A/C, and Rad....airflow is next to none without fans....that's why I stated my 130mph statement, Jay.
Braineack is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
"Chimney Ethanol" E100 MiataGarage Engine Performance 5 09-30-2015 12:04 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:15 AM.