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Macy's Garage,
http://www.macysgarage.com/myweb6/Parts/triumph_accessories.htm , sells a
purpose-built fan for just such a problem. Not inexpensive, but according
to one of our club members who installed one on a customer car, it worked
like a champ. End of cooling issues. NFI on my part here.
Moss also sells a fan conversion kit for the TR3-3B that might work on a 4.
http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=66775. Again,
NFI.
About 12 years ago I wanted to install yellow 8-blade fan on my TR3A, but
was also concerned about the closeness to the radiator: about a quarter inch
or less. I didn't want to install it backwards for efficiency reasons. My
solution then was to section a fan nose piece, shorten it about 5/8" then
braze it back together. I mounted the yellow fan to that, giving me the
fan-to-radiator clearance I was comfortable with. It's still on my 3,
working well after 60 thousand miles or so. The Moss kit is similar in
concept. I also painted the yellow plastic fan black, but after some miles
the paint started chipping off, so I just put in a new yellow fan and called
it good.
I've also heard of folks using a TR3 fan nosepiece on a 4 because it's
shorter than the 4 nosepiece, thus giving the required clearance. You can
then mount the yellow fan the proper direction. That might be the
easiest/cheapest way to solve your issue.
Dennis
_____
From: Triumphs [mailto:triumphs-bounces@autox.team.net] On Behalf Of Cliff
Sent: Wednesday, February 18, 2015 7:46 PM
To: Triumphs@autox.team.net
Subject: [TR] TR4A - plastic fan - advice?
So, I wanted to pull the fan hub extension because I wanted to fit an 8
blade plastic fan backwards. However, the center hole in the fan is 1/8"
smaller than the diameter of the plate at the end of the fan extension. I
was thinking of turning the fan extension down.
Has anyone fitted one of these plastic fans, and if so, how did you mount
it?
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Macy’s Garage, <a
href=3D"http://www.macysgarage.com/myweb6/Parts/triumph_accessories.htm";>=
http://www.macysgarage.com/myweb6/Parts/triumph_accessories.htm</a>
, sells a purpose-built fan for just such a problem. Not =
inexpensive, but
according to one of our club members who installed one on a customer =
car, it worked
like a champ. End of cooling issues. NFI on my part =
here.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Moss also sells a fan conversion =
kit for the
TR3-3B that might work on a 4. <a
href=3D"http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=3D6=
6775">http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=3D667=
75</a>.
Again, NFI.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>About 12 years ago I wanted to =
install
yellow 8-blade fan on my TR3A, but was also concerned about the =
closeness to the
radiator: about a quarter inch or less. I didn’t want to =
install it
backwards for efficiency reasons. My solution then was to section =
a fan
nose piece, shorten it about 5/8” then braze it back =
together. I
mounted the yellow fan to that, giving me the fan-to-radiator clearance =
I was
comfortable with. It’s still on my 3, working well after 60 =
thousand
miles or so. The Moss kit is similar in concept. I also =
painted the
yellow plastic fan black, but after some miles the paint started =
chipping off,
so I just put in a new yellow fan and called it =
good.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>I’ve also heard of folks =
using a TR3
fan nosepiece on a 4 because it’s shorter than the 4 nosepiece, =
thus
giving the required clearance. You can then mount the yellow fan =
the
proper direction. That might be the easiest/cheapest way to solve =
your
issue.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Dennis<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'> =
Triumphs
[mailto:triumphs-bounces@autox.team.net] <b><span =
style=3D'font-weight:bold'>On
Behalf Of </span></b>Cliff<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Wednesday, February =
18, 2015
7:46 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
Triumphs@autox.team.net<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [TR] TR4A - =
plastic fan -
advice?</span></font><o:p></o:p></p>
</div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<div>
<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><font size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>So, I wanted =
to pull the
fan hub extension because I wanted to fit an 8 <br>
blade plastic fan backwards. However, the center hole in the fan =
is
1/8” <br>
smaller than the diameter of the plate at the end of the fan =
extension. I
<br>
was thinking of turning the fan extension down.<br>
<br>
<br>
Has anyone fitted one of these plastic fans, and if so, how did you =
mount <br>
it?<br>
<br>
<br>
</span></font><font face=3DArial><span =
style=3D'font-family:Arial'><o:p></o:p></span></font></p>
</div>
</div>
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