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Old 11-23-05, 05:22 PM
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What are the pros and cons...

of removing the fan shroud? Besides weight reduction (pro) and Safety (com) are there any benifits or worries of removing this for more space?
Old 11-23-05, 05:28 PM
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dont remove it, i heard it won't lower your intake temps, it'll only raise them... thats if your running the stock fan, there are no pro's.
Old 11-23-05, 05:47 PM
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the shroud is the only thing directing the air flow created by the clutch fan.... do not remove it. Weight loss will be negligible anyway. Go with an electric fan if you want to get more room in the engine bay.
Old 11-23-05, 05:54 PM
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Originally Posted by BigMike85
the shroud is the only thing directing the air flow created by the clutch fan.... do not remove it. Weight loss will be negligible anyway. Go with an electric fan if you want to get more room in the engine bay.
If I were to get an electric fan, could I then remove the schroud? The reason is, i am looking to do some repiping of the intercooler but where I want to put 2 of the pieces, it would run straight into the shroud then out. So I could only make it fit if I drilled holes in the damn thing about 4 inches in diameter. If I do that then I might as well remove the thing.
Old 11-23-05, 06:08 PM
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the e-fan will mount where the shroud is now... so yes you can remove it.
Old 11-23-05, 06:09 PM
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Originally Posted by BigMike85
the e-fan will mount where the shroud is now... so yes you can remove it.

Awesome thanks for the tips
Old 11-23-05, 06:39 PM
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Also, if you don't want to spend too much on an e-fan conversion, ford taurus and escort both have fans that are about the same size as the fc's radiator, IIRC. That way you can just get one from a junked one somewhere, wire it yourself and save a bunch.
Old 11-23-05, 06:53 PM
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are they a good e-fan? i've heard horror stories of efans not cooling suffecently and blowing seals.
Old 11-23-05, 07:04 PM
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Originally Posted by Alex6969
are they a good e-fan? i've heard horror stories of efans not cooling suffecently and blowing seals.

That I dont know... I know several people on the boards use them but that's about it. I guess any used part should be checked out first. They probably arent as good as aftermarket either, they were just for stock cars. I'll probably be using a ford e-fan on my car (whenever I get it to run).
Old 11-23-05, 07:49 PM
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i have been seeing these pics of drift fc's with the tops of the fan shroud cut out, like a rectangle or something. whats up with that?
Old 11-23-05, 08:02 PM
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Originally Posted by Alex6969
are they a good e-fan? i've heard horror stories of efans not cooling suffecently and blowing seals.
Plenty of those cars had other problems or cooling issues as well. First off I'm sure plenty had an FMIC (is this what you're doing?) which restricts airflow to the rad. Second off they used too low of a CFM fan. You generally want at least 2800 CFM. The standard GM fan (I say that because it's on almost every larger GM car and truck) does a good job (same as the fiero fan). The escort fan I've heard does a good job, and has 3 speed settings.

No matter what though... RIG IT TO A THEMOSWITCH... do it like the factory would, and have it come on at a certain temperature.
Old 11-23-05, 08:03 PM
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Originally Posted by skatingsamurai
i have been seeing these pics of drift fc's with the tops of the fan shroud cut out, like a rectangle or something. whats up with that?
Don't ever let yourself think that what drifters do makes sense for drifting, and make absolutely sure that you know that what they do almost never makes sense for a street/race car.
Old 11-23-05, 08:10 PM
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yea i was procrastinating on my piping for my fmic and had my shroud off and the needle would be slightly above the middle but the other day i finally got a chance to put it back on and now the needle stays below the middle . so if youre doing the piping thats cool but dont run it like that... that waqs stupid of me and only put wear on my engine. also the weight you lose is ridiculous to even think about for that u take out your jack or spare or ?.
Old 11-23-05, 08:23 PM
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A good weight loss program (unless you want to take Friends in the car) is to remove all the seats including the driver. replace the driver seat with a street racing seat like a Recaro or which ever you like. good racing seats way less. so, you'll have shed some weight. and also if you want to( i don't know if this will have any impact on the rx7 depending on year) you can replace the rear hatch window. my Friend did that in his Z car and took a chunk out of its weight
Old 11-24-05, 12:49 AM
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rear hatch of our cars are alot, replace with some good lexan, hmm maybe a lexan front window. take out all carpet, kiss big speakers good bye, no a/c, air pump, you can keep power steering if you want depending on type of racing. Light wheels, replace sunroof with CF sunroof, CF hood.....there is alot you can do, removing the fan shroud does basically nothing for weight loss.
Old 11-24-05, 12:54 AM
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Ok because i'm considering putting one in. I have an 86 NA. I'm removing that massive A/C condencer. will it say on the fan the CFM? I'll be getting my trust tape measure and head to my local u wrench it (pick and pull is such a gay name) here shortly.
Old 11-24-05, 01:08 AM
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An e- fan will weigh more than a 2lb fan shroud also so thats not really weight reduction. But i understand what your saying with the IC piping so i guess your not worried about the weight.
Old 11-24-05, 05:57 AM
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Originally Posted by rotorman85
An e- fan will weigh more than a 2lb fan shroud also so thats not really weight reduction. But i understand what your saying with the IC piping so i guess your not worried about the weight.
No I am not. Just want to put the piping elsewhere. both to and from the fmic are right side enter through the body but it is too tight to work around so I want to space it out but that damn schroud has fouled up my plans.....blasted plastic
Old 11-24-05, 06:03 AM
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get a differnet fmic with different end tanks, it will make life much easier, you may need to relocate the battery
Old 11-24-05, 12:11 PM
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A friend of mine recommended the Ford Taurus e-fan to me. He said it matched the dimensions of our radiator just right. And also said that it moves 4,000cfm I think?? Er, I think he said it had 2 speeds it'd run... I think one was 3,600 and the other was 4,000, but it's been a long while and I don't remember it so much.

Only big pro in removing the shroud is if you remove the clutch fan with it.... frees up space. And takes some load off the motor. Then the alternator takes that load back to power the e-fan... so... But you also won't have your e-fan running while you drive unless you wire it to be on all the time (bad).
Old 11-24-05, 03:58 PM
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Originally Posted by MaxDuo
A friend of mine recommended the Ford Taurus e-fan to me. He said it matched the dimensions of our radiator just right. And also said that it moves 4,000cfm I think?? Er, I think he said it had 2 speeds it'd run... I think one was 3,600 and the other was 4,000, but it's been a long while and I don't remember it so much.

Only big pro in removing the shroud is if you remove the clutch fan with it.... frees up space. And takes some load off the motor. Then the alternator takes that load back to power the e-fan... so... But you also won't have your e-fan running while you drive unless you wire it to be on all the time (bad).
And why would you consider that to be a bad thing?
Old 11-24-05, 05:34 PM
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i have the efan of a 93 ford escort. It is about the same size as the fc rad. and does a nice job at cooling. I wasn't aware of this fan have anymore that 1 speed but hey i learn thing ever day. Now i just got to find the low med hi switch that gm put on the fan for us fc guys.Joking) but ya the fan works good. I have it running as soon as the car turns on and from what i hear isn't the best but it still works. I really need to find out how and where to mount a thermoswitch.
Old 11-24-05, 07:41 PM
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Originally Posted by ForsakenRX7
And why would you consider that to be a bad thing?
Eh, I'll just copy and paste something:


Originally Posted by Aaron Cake's site
The opposite of this is to wire the fan to operate anytime the car is running. It is connected directly to a 12V IGN source, perhaps through a relay. The downfalls of this are threefold. One, you don't need the fan on all time. It is only required when sitting stationary or driving slowly. At cruise, a spinning fan is just an unnecessary load on the electrical system. Which brings us to point number two; the fan loads an already factory-overloaded electrical system. The factory 2nd gen alternator is either rated at 70A ('86-'88) or 90A ('89-'92). These ratings are optimistic, and actual output is somewhat less. Adding a constant 10A draw on this system is quite a bit of stress. Finally, you may actually overcool the car at idle, causing the thermostat to close. Not only does this increase fuel consumption, foul spark plugs and foul the O2 sensor, but it may cause a "heat spike" should you start moving under high load. The engine will heat up in the lag time it takes the thermostat to come open.
Old 11-24-05, 09:52 PM
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all i have to say is that if you notice a difference with that little bit of wieght removed then you are doing something right.
Old 11-25-05, 01:49 AM
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http://www.aaroncake.net/RX-7/efaninstall.htm


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