[6pack] Electric cooling fan: pusher or puller?

[Andrew Packard]

Part of my TR250 resto included the fan eliminator kit and a Hayden 15"
pusher.  My local LBC didn't want the puller because of the increased
operating noise of the thinner fans.  We used the wire typically used for an
AC condenser switch (so the fan comes on anytime the AC is on for a car that
has it) and wired up a manual switch to a pull knob that barely sticks out
underneath the dash just to the right of the steering column.  I can pull it
if in slow moving traffic and to check that the fan is coming on correctly.
With the fan on at a stand still, it's generating directed airflow
equivalent to traveling at pretty high speeds and I can see the temp gauge
move back to the left when it kicks on. 
Andy
CD6746L HVDA



-----Original Message-----
From: 6pack-bounces at autox.team.net [mailto:6pack-bounces at autox.team.net] On
Behalf Of Bob Danielson
Sent: Wednesday, January 07, 2009 11:09 AM
To: 'Henri Lefebvre'; 6pack at autox.team.net
Subject: Re: [6pack] Electric cooling fan: pusher or puller?

Henri,
Install Rick Patton's Fan Eliminator Kit
(http://www.pattonmachine.com/FanEliminator.htm) It's a real cheap
horsepower gain.

Get a 16" "thin" puller fan like the Spal fan that I have
(http://tr6.danielsonfamily.org/Radiator.htm) Just make sure what ever you
get is thin enough to fit between the radiator and the cross brace.

I have Dan Masters' wire harness which includes wiring directions for a
light that shows when the fan is running. You can see his schematic here
http://www.advanceautowire.com/latetr6.pdf My fan is also wired to a 3-way
switch: Off, Manual On & Auto-On

Dan also drew up a schematic for me in case I wanted to use the Spal relay
that came with their fan http://tinyurl.com/7yqkqx

Bob


Bob Danielson
1975 TR6 CF38503U
Running w/ Throttle Body Injection
Toyota 5 Speed & Nissan LSD
http://tr6.danielsonfamily.org 

-----Original Message-----
From: 6pack-bounces at autox.team.net [mailto:6pack-bounces at autox.team.net] On
Behalf Of Henri Lefebvre
Sent: Wednesday, January 07, 2009 10:24 AM
To: 6pack at autox.team.net
Subject: [6pack] Electric cooling fan: pusher or puller?

What is the preference for an electric cooling fan? Pusher or Puller?
As a Pusher, there seems to be easier mounting points in front of the rad,
but the fan and housing will reduce the free flow of air to the rad.
As a Puller the free air flow is better but mounting is less convenient and
the mechanical fan extension must be replaced.

I would appreciate comments and opinions, thank oyu,

Henri
75 TR6, triple webers
6pack at autox.team.net
http://autox.team.net/mailman/listinfo/6pack

http://www.team.net/archive

You are subscribed as 75tr6 at tr6.danielsonfamily.org
6pack at autox.team.net
http://autox.team.net/mailman/listinfo/6pack

http://www.team.net/archive

You are subscribed as apackard68 at att.net