I've been browsing through some of my catalogs of late and was curious
if it was possible to change from the clutch fan on my 78 camaro to an
electric one. I'm guessing its just remove from the clutch out, bolt on new
electric fan at the shroud, and plum the wires to the battery and ignition
switch. Is that about right? I hate, HATE working on the electric system,
it always ends up being a royal bitch to me with some rats nest somewhere or
a worn out wire hidden behind the dash or firewall. Also, will my little 60
amp alternator be able to handle the extra current draw? I wouldn't want to
buy a $200 high amp alternator just to get a $80.00 fan to work right.
Everything works fine when you turn it on all at once, but you can see the
headlights dim and voltage drop like a rock if you run the power windows
when I do this. I know my system is old and all, and it may just be high
time for a new alternator anyway, but I don't want to have to through good
money after bad. Additionally, my stock idle is a meager 500rpm, so I think
I'd need an alternator that can put out good volts at low rpm. Or is there
a smaller pulley I can use to get it to turn faster? Thanks in advance, I
know some guru here has though of or done this before.
You are going to definately need atleast a 100 amp alternator to keep up with
the electric fan. My dad's 78 T/A still dims down at idle with a 100AMP when
the fans kick in.
Why do you need an electric fan? The only real reason would be in you are
modifying and turning the car into an autoX or drag strip racer. If your
clutch fan can't keep up then you have something wrong with your cooling
system. It should run between 190-220 degrees at all times.
Also, your 500RPM idle seems low. It should be around 700RPM in drive or
neutral for a manual tranny.
Yeah, that's where it is right now, but I was hoping for a few extra ponies
for cheap by getting rid of that drag on the belts, or to at least get rid
of the finger stealing demon I have up front right now. I was also hoping
to get a little more cooling effeciency out of it as well.
500 is what the manual says, and that's what the smog shops always drop it
too when I take it in to get tested. It's an auto transmission, btw. So iI
was also thinking that my trans might be a bit happier if it was cooled down
I happen to be a guru who has installed quite a few electric fans in place
of clutch fans.
The pros are: Better fuel economy, better power, less under-hood noise when
fan is off. Also, it's a good idea to put a temperature activated switch on
the fan so it doesn't run all the time. You will find the fan is off almost
all the time.
The cons are: The electric fan actually won't cool as good as the clutch
fan when climbing a hill on a hot day or pulling a load. The fan costs 80
bucks. They do pull a lot of current when they are on. I never had to
replace an alternator though. Best of luck to you,
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