VWDiesel.net The IDI, TDI, and mTDI source.

Engine Specific Info and Questions => IDI Engine => Topic started by: Smokey Eddy on November 14, 2008, 12:52:47 am

Title: Rad Fan swaps.
Post by: Smokey Eddy on November 14, 2008, 12:52:47 am
Anyone put neon rad fans in their IDI?
they are very slim and are dual fans. I noticed them when i was fixing my girlfriend's neon's starter problem. You have to remove them to do it.

they are verryyy thin and are dual fan shroud. Any ideas? i'm thinking of going to the junk yard to nab them out of a 1999 that's in there.

I know neons have a rep. for over heating but i thought it was poor engine design and too much load on the rad with the AC and trans cooler and everything.
Title: Rad Fan swaps.
Post by: 53 willys on November 14, 2008, 06:53:27 am
I would just look for a 91 passat dual fan...they are supposed to be a direct bolt in 8)
I got a 93 passat fan in mine...but mine is not the direct bolt in....I had to make 2 small tabs to mount the fan in the stock locations..
Title: Rad Fan swaps.
Post by: TurboJ on November 14, 2008, 11:27:50 am
Anyone have good pictures of the Passat twin fans?
Are they really slim and do they come with a deep shroud or is it really a 'space saver' design?
Title: Rad Fan swaps.
Post by: Smokey Eddy on January 04, 2009, 08:34:08 pm
Ford Taurus V6 fans work very well!
Title: Rad Fan swaps.
Post by: jtanguay on January 04, 2009, 10:35:37 pm
Quote from: "Smokey Eddy"
Ford Taurus V6 fans work very well!


i would also imagine that they would work well in an a/c system as well (more surface area being cooled)

i wonder how much juice they draw?
Title: Rad Fan swaps.
Post by: Smokey Eddy on January 04, 2009, 10:39:42 pm
(http://i49.photobucket.com/albums/f279/edmcclung/SSPX0310.jpg)
thats them in my garage floor just dwarfing the radiator.
They only JUST fit. I have a template drawn up for the supports and shroud.

I powered one of them in the middle of my living room and the blinds (they were closed) went EVERYWHERE....

Probably LOTS of draw... they are powerful fans.
The taurus had an oil cooler and AC i think?
AC for sure anyways...
Title: Rad Fan swaps.
Post by: TurboJ on January 04, 2009, 11:23:55 pm
Quote from: "TurboJ"
Anyone have good pictures of the Passat twin fans?
Are they really slim and do they come with a deep shroud or is it really a 'space saver' design?


Nobody...?
Title: Rad Fan swaps.
Post by: 53 willys on January 04, 2009, 11:32:18 pm
Quote from: "jtanguay"
Quote from: "Smokey Eddy"
Ford Taurus V6 fans work very well!


i would also imagine that they would work well in an a/c system as well (more surface area being cooled)

i wonder how much juice they draw?

might wanna beef up your wiring Ed!!!!!!


One of the issues that needs to be addressed when installing a Taurus fan is the wiring. The fans draw near 80 amps at start up :shock:  then simmers down to a mere 30 amps of continuous draw. These awesome fans pull around 3000 cfm, more than enough to cool even the meanest engine.


just make sure you have some BIG wires for running that fan... :wink:
reason I know this is cause my rockbuggy uses a taurus fan too...
Title: Rad Fan swaps.
Post by: 53 willys on January 04, 2009, 11:35:09 pm
Quote from: "TurboJ"
Quote from: "TurboJ"
Anyone have good pictures of the Passat twin fans?
Are they really slim and do they come with a deep shroud or is it really a 'space saver' design?


Nobody...?

I will grab some pics of mine tomorrow....mine is NOT the direct bolt in replacement...I had to make 2 small extender tabs to make mine mount in factory locations...
Title: Rad Fan swaps.
Post by: Smokey Eddy on January 04, 2009, 11:37:25 pm
Oh awesome!!! hahaha
yeah im re-wiring it. I hope the stock relay can take it though?
The wiring on the fans was significantly larger than the stock one...

Thanks for bringing that up. I'll keep that in mind with what all i have to replace.

The taurus fans are pretty thin TurboJ but you do need to make a shroud.
I'm looking forward to never over heating ever again.

(do you use two fans on your application or only 1?)
Title: Rad Fan swaps.
Post by: 53 willys on January 05, 2009, 12:01:55 am
Quote from: "Smokey Eddy"
Oh awesome!!! hahaha
yeah im re-wiring it. I hope the stock relay can take it though?
The wiring on the fans was significantly larger than the stock one...

Thanks for bringing that up. I'll keep that in mind with what all i have to replace.

The taurus fans are pretty thin TurboJ but you do need to make a shroud.
I'm looking forward to never over heating ever again.

(do you use two fans on your application or only 1?)


pretty sure the Stock VW  fan relay will not last wired to a Taurus fan.

Those fans in your pics are different then my Taurus fan I have on my rockbuggy...
this is the tauras fan I run on the rockbuggy..
http://cgi.ebay.com/ebaymotors/90-91-92-93-94-95-Ford-Taurus-Radiator-Fan-Assembly_W0QQitemZ310109222986QQcmdZViewItemQQimsxZ20081216?IMSfp=TL0812161110008r38250
I bought mine from a JY for $20....

if you are using a tauras fan you need to make sure you use a relay that is rated for spikes of 85amps.....napa sells cheap relays that would work.
Title: Rad Fan swaps.
Post by: 53 willys on January 05, 2009, 12:10:09 am
Quote from: "Smokey Eddy"
(http://i49.photobucket.com/albums/f279/edmcclung/SSPX0310.jpg)
.

so are these tauras? or neon?
Title: Rad Fan swaps.
Post by: Smokey Eddy on January 05, 2009, 12:35:35 am
those are off the taurus... i didn't look at the year.
Title: Rad Fan swaps.
Post by: TurboJ on January 05, 2009, 05:43:15 am
Quote from: "Smokey Eddy"
Oh awesome!!! hahaha
yeah im re-wiring it. I hope the stock relay can take it though?
The wiring on the fans was significantly larger than the stock one...

Thanks for bringing that up. I'll keep that in mind with what all i have to replace.

The taurus fans are pretty thin TurboJ but you do need to make a shroud.
I'm looking forward to never over heating ever again.

(do you use two fans on your application or only 1?)


I'd like to use two, but I don't want massive, heavy fans so if there isn't a suitable OEM application, I'll probably go with a single, universal, slim fan.
The Taurus / Neon ones aren't an option for me since there are very few Neons around here and absolutely no Tauruses..

...Still waiting for that pic of Passat fans :)
Title: Rad Fan swaps.
Post by: Kudagra on January 05, 2009, 06:41:10 pm
Quote from: "TurboJ"

The Taurus / Neon ones aren't an option for me since there are very few Neons around here and absolutely no Tauruses..

...Still waiting for that pic of Passat fans :)


You dont know how lucky you are.

SOMEDAY Ill take a picture of the ones I have. I have a 16v Passat fan (bolts right up) and a 95 VR6 Passat fan (much larger...same kind of design..wont fit without mods)
Title: Rad Fan swaps.
Post by: lildevil on January 05, 2009, 06:45:35 pm
Quote from: "53 willys"
Quote from: "TurboJ"
Quote from: "TurboJ"
Anyone have good pictures of the Passat twin fans?
Are they really slim and do they come with a deep shroud or is it really a 'space saver' design?


Nobody...?

I will grab some pics of mine tomorrow....mine is NOT the direct bolt in replacement...I had to make 2 small extender tabs to make mine mount in factory locations...



I put a passat dual fan into mine, its MUCH smaller and keeps it cool much faster, mines holding in with 3 screws though, forth one isnt lined up, BUT you could use the Passat rad aswell if you like
Title: Rad Fan swaps.
Post by: 53 willys on January 09, 2009, 08:23:16 am
here is my passat fan...mine came from a 93 with a 16v..but i still had to mod the passenger side mounts to fit.

(http://i81.photobucket.com/albums/j240/53willys/1991%20Jetta%20GLI%20diesel%20conversion/DSC_0544.jpg)

(http://i81.photobucket.com/albums/j240/53willys/1991%20Jetta%20GLI%20diesel%20conversion/DSC_0542.jpg)

here is the spot that needed to be modded
(http://i81.photobucket.com/albums/j240/53willys/1991%20Jetta%20GLI%20diesel%20conversion/DSC_0543.jpg)
Title: Rad Fan swaps.
Post by: TurboJ on January 09, 2009, 09:47:46 am
Thanks! That is helpful.
The Passat fan isn't really that slim after all..
But it's sure to be effective. Will have to see if that works for me too.
Title: Rad Fan swaps.
Post by: 53 willys on January 09, 2009, 10:00:33 am
Quote from: "TurboJ"
Thanks! That is helpful.
The Passat fan isn't really that slim after all..
But it's sure to be effective. Will have to see if that works for me too.

I think the MK3 gasser fan is smaller and direct bolt in???
Title: Rad Fan swaps.
Post by: TurboJ on January 09, 2009, 11:52:21 am
I guess I'll have to go on a breaker's yard tour soon  8)
Title: Rad Fan swaps.
Post by: Quantum TD on January 09, 2009, 03:09:48 pm
Quote from: "53 willys"
I think the MK3 gasser fan is smaller and direct bolt in???


Not really. The MK3 is taller and won't fit without trimming the bottom (or top?) off the shroud.
Title: Rad Fan swaps.
Post by: Smokey Eddy on January 09, 2009, 07:25:08 pm
well a bit of trimming isn't too difficult!
I'm still :roll:  waiting to make a shroud with my friend. I need to buy some stock.
Title: Rad Fan swaps.
Post by: TurboJ on January 11, 2009, 08:39:22 am
I got a Passat TD twin fan now too. It looks pretty nice and at least it should be very effective.
The only thing I don't like about it is the big fan motor that protrudes a long way into the engine compartment. I wonder why universal 'slim' fans only need a tiny motor on them. If only I had some reserve in my project budget I would look into fitting universal slim fans into the Passat twin shroud.
Now I think I'm just going to go with the Passat system.
Title: Rad Fan swaps.
Post by: 53 willys on January 11, 2009, 09:48:37 am
most aftermarket fans SUCK!! I have spent big bucks on fans in my day...and I have come to the conclusion that stock fans truly do pull the most CFM....my passat fan is thicker then the other style....so there is thinner versions.

in the end I like the thicker one since it has a REAL nice enclosed shroud.
I would take a pasasat fan or taurus fan over a high dollar flexalite or spal fan ANY day.
my .02



hey zukgod1!! post a pic of you bolt in passat fan would yah?!?!?!?!?
that way we can all see the difference.
Title: Rad Fan swaps.
Post by: Powjetta on January 11, 2009, 09:43:08 pm
I installed the newer passat dual fan with the blades tied on the outer edges with very minor modifications to mounts.  I have no problem keeping the rad and coolant temp down but have burned out 2 alts before going to a Bosch.  It does fine on low speed but when high kicks on it sucks juice and my voltage drops.  I am thinking of disabling the high speed.  AC blows cold even today at 80 deg.  I bought the passat controller but haven't opened it up yet to see what the magic is.
Title: Rad Fan swaps.
Post by: Powjetta on January 13, 2009, 08:26:55 pm
I took the opportunity to check the draw on the dual fan set up that I have, low draws 36 amps and high draws 55 amps total draw with AC on high blower speed.   My Bosch 90 amp alternator puts out about 36 at idle and on high speed and at idle I believe it is drawing from the battery.  After I let it sit at idle and then rev it up I saw a brief high of 75 amps with the clamp meter on the alt wire.   Slightly different numbers on the positive cable due to the juice in the battery.  I put a switch in to activate high speed but I don't use it since installing the dual fan.
Title: Rad Fan swaps.
Post by: zukgod1 on January 14, 2009, 07:58:06 am
Quote from: "53 willys"
most aftermarket fans SUCK!! I have spent big bucks on fans in my day...and I have come to the conclusion that stock fans truly do pull the most CFM....my passat fan is thicker then the other style....so there is thinner versions.

in the end I like the thicker one since it has a REAL nice enclosed shroud.
I would take a pasasat fan or taurus fan over a high dollar flexalite or spal fan ANY day.
my .02



hey zukgod1!! post a pic of you bolt in passat fan would yah?!?!?!?!?
that way we can all see the difference.



I'll see if I can get one today. I'll have to use the phone but should be ok.
Title: Rad Fan swaps.
Post by: carrizog60 on January 17, 2009, 01:57:21 am
i bought one from passat vr6 wih a/c and its slimmer...
and as 3 speeds...