From: (Little Jon)
Date: Mon, 31 Jul 1995 17:46:53 -0400
Subject:    Installing an Electric fan - replaces original 

As many of you know, I have been working to find a permanent solution to
replacing my original 16" belt-driven cooling fan with an electric fan.
Well, I have finally done it and I thought I would share it with you as
sort of a procedure:

1)  Drive to your local auto parts store and order a MURRAY 270005, or a
HAYDEN 3700, or a 4SEASONS 36898, or a CARQUEST 77503 electric cooling fan
and thermostat kit of your choice.  After you have the fan in hand, go onto
the next steps.

2)  Drive to the hardware store and buy six 90 degree L brackets with
1-1/2" legs and two holes on each side (just over 3/16" holes).

3)  While you're there, get a pop rivet tool and 3/16 x 1/2" rivets (at
least 12 of them) and the 3/16" backer washers.

4)  Make sure you have a 3/16" drill bit, a drill, and a bag of assorted
sized nylon cable ties too.

5)  Remove the 4 nuts holding the original fan to the water pump pully.
Remove the fan.  Replace the nuts adding spacers under each one.

6)  Remove the shroud which previously contained the original fan.

7)  Using the drill and rivet tool, mount 6 "L" brackets around the inside
of the shroud so that they make a flat surface recessed into the shroud for
the fan to mount.

8)  Place the fan into the shroud (after you have set it up as a PULLER
fan) to ensure it will seat flat onto the L brackets.

9)  Rotate the fan to desired position for ease of wiring later.

10) Mark the perimeter of the fan in all locations where holes must be
drilled in order to attach the fan to the L brackets using the nylon cable
ties.  Make sure the locations you choose will not interfere with the
rotation of the fan blades.

11) Drill holes in the perimeter of the fan and mount to L brackets with
cable ties.

12) Replace shroud in car.

13) Wire in the thermostat per its instructions, except instead of trying
to jam the thermostat through the fins of the radiator, simply clamp it
under the bracket attached to the water outlet at the radiator cap.  This
is the bracket that holds the spark plug wires up and away from hot cooling

14) When wiring the fan to the thermostat kit, make sure the rotation of
the fan is correct to pull air into the engine compartment.  If it is not
correct, change the polarity of the fan wires.

TOTAL COST:  ~$100.00  US   and about 3 hours time.

I did this today and it works great!  I used to have a problem where the
12" fan I installed first could not keep the engine cool while idling with
the AC on, but now, with the larger 16" electric fan and the shroud in
place, it can cool the engine right down with no problem!  It's a little
louder, but it uses very little energy to run unlike the original
belt-driven fan.  You'll notice a "seat of the pants" improvement in

Good Luck!

Little Jon
"The Green Beast of the Northeast"
'85 300ZX 2+2 160K+ miles in Jaguar Racing Green
'95 Honda CBR600F3