rad fan behavior

[Huw Powell]

> Do you know if the after-run rad fan feature can be installed in an '85
> if it does not already have this?  Or is this more trouble than it's
> worth?

here's the easiest way to do it i think... hmm, wait, it may not be
easy...

On my coupe I wired the power supply to the sender, which triggers the
relay, to be from battery, not ignition.  The power that the relay
switches to the fan is already battery power.  Now, if the sender is
calling for fan, it just keeps running when I turn it off.

But *how* I did that I haven't the foggiest idea... and my coupe has the
antique underdash "fusebox", so it would be a bit different anyway.

If there wiring is there, of course, you can just add the bracket, the
sender, and the relay and it should work.  Not that it really matters
with a normally aspirated car, there's not *that* much heat under the
hood to get rid of - no red hot glowing turbo to cool off, etc.

> Yes, mine is audible while in the car with radio off, but not too loud.
> If the car is parked and idling, and you are standing next to it, it is
> very loud compared to a "newer" car.  This could be normal maybe for a
> 4000?

pretty much.  you're not supposed to leave them parked and idling
anyway!

> Do you know if the multi-speed fans could be used in my '85 in place of
> the "hurricane only" model?  Could again be more trouble than it's worth
> but I'm just curious.

I'd say it's more trouble than it's worth... JMHO of course.

--
Huw Powell

http://www.humanspeakers.com/

http://www.humanthoughts.org/