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-   -   Radiator Fan Replacement? (https://rotarycarclub.com/showthread.php?t=14542)

ppritchard 08-06-2011 09:54 AM

Radiator Fan Replacement?
 
Searched, but not one thread on radiator fans?

Anyway, we have the drivers' side dead and a new one on the way from Ray.
The manual only details removing the entire radiator with fans attached.

Rather not do that. I've heard that we can remove the top in-the-way stuff and just disconnect the fan shroud, fans and wiring -- but again the manual just doesn't describe it that way.

Anyone removed the shroud and fans and left the radiator?
Any tricks or issues? Looks like up to four bolts holding the shroud.

Thanks in advance for any input.

Garfinkles Motor Works 08-06-2011 08:49 PM

Yes I did that last summer,replaced both motors .The motor was a direct replacement from Advanced Auto parts .Cheeper than the Mazda part and the same maker .The four bladed fan puts out more air then the five blade .I bought my second four blade fan from Mazda for about $34 .

vincentrx7 08-07-2011 09:15 PM

I went with a JEGS fan. I had to make a few mods but it moves much more air and is a lot lower profile.

Force13b 08-08-2011 11:10 AM

You can pull the fan's out through the top, you can even replace your radiator that way. I did it that way 5/6 yrs ago. Just remove everything you see that covers the fans. Airbox, IC, battery box from there you should be able to figure it out.

ppritchard 08-08-2011 03:15 PM

Thanks.
Fan Motor arrived today.
Hopefully that will be the answer.

thanks

yzf-r1 08-08-2011 11:07 PM

Quote:

Originally Posted by vincentrx7 (Post 161505)
I went with a JEGS fan. I had to make a few mods but it moves much more air and is a lot lower profile.

Which one did you go with? A lower profile fan would be a big help to clear my IC duct

Signal 2 08-09-2011 04:54 AM

If you need something aftermarket for clearance issues that's one thing. But just because a fan has a higher CFM by it's manufacturer doesn't automatically mean it's more effective when installed. Decent ducting is important too. The stock fan assembly is tough to beat IMO.
Never had a problem with mine. Still the original one....knocking on wood.

Force13b 08-09-2011 06:08 PM

Quote:

Originally Posted by Signal 2 (Post 161718)
If you need something aftermarket for clearance issues that's one thing. But just because a fan has a higher CFM by it's manufacturer doesn't automatically mean it's more effective when installed. Decent ducting is important too. The stock fan assembly is tough to beat IMO.
Never had a problem with mine. Still the original one....knocking on wood.

:iagree:

hades 08-09-2011 07:32 PM

Quote:

Originally Posted by yzf-r1 (Post 161698)
Which one did you go with? A lower profile fan would be a big help to clear my IC duct

what SMIC do you have?

vincentrx7 08-09-2011 08:14 PM

I don't know the model number but it was the one closest in size to the stock unit.
BTW, why is the stock unit have one a 4 blade and one 5 blade fan?

vincentrx7 08-09-2011 08:21 PM

Quote:

Originally Posted by Signal 2 (Post 161718)
If you need something aftermarket for clearance issues that's one thing. But just because a fan has a higher CFM by it's manufacturer doesn't automatically mean it's more effective when installed. Decent ducting is important too. The stock fan assembly is tough to beat IMO.
Never had a problem with mine. Still the original one....knocking on wood.

Are you just looking for a point of argument? Not sure why you point out the obvious? But for argument's sake, the JEGS fan fit nicely...as good as the stock with a few modifications. The rubber seals completely to the radiator on all 4 sides. I also have ducting made from aluminum sheeting to the radiator.
The low profile allows now for a custom cold air intake to the scoop in the hood.

yzf-r1 08-09-2011 11:38 PM

Quote:

Originally Posted by hades (Post 161878)
what SMIC do you have?

M2 Medium

Garfinkles Motor Works 08-10-2011 02:27 AM

The five blade and four blade fans are used so then fans will not set up harmonic noise.Two four blade or two five blade fans near each other running at near the same speed will set up a harmonic pulseing noise .I use two four bladed fans and I have heard the pulse a few times with the hood open but it is not enough worry about .

Herblenny 08-10-2011 08:16 AM

Like Garfinkle, I run 2 x 4 blade fans on my FD. Mainly because I no longer have the SMIC.. I was also told by some MIT engineer that 4 blades actually pull more air..

Signal 2 08-12-2011 09:56 AM

Quote:

Originally Posted by vincentrx7 (Post 161886)
Are you just looking for a point of argument? Not sure why you point out the obvious? But for argument's sake, the JEGS fan fit nicely...as good as the stock with a few modifications. The rubber seals completely to the radiator on all 4 sides. I also have ducting made from aluminum sheeting to the radiator.
The low profile allows now for a custom cold air intake to the scoop in the hood.

OK, let's argue. Apparently it isn't obvious. The OP posted a question about removing the fan assembly. Your reply to that is that you stuck a JEG'S fan in your car instead. As if that's an answer on how to replace the fan motor or remove the assembly. And without any qualifications as to "why" you went that route. The OP isn't exactly new to the FD and probably knew better. But for consideration to any readers who were new, I suggested that's not necessarily a good option.
I'm happy if it's working for you. But you posted no figures, pictures or reasons why getting a JEG'S fan was better. And I submit that in MOST cases, they are not.


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