[TR] Fan extension, but for what?

[tfansher at comcast.net]

I can't tell the length, but a buddy of mine with a TR3 mounted a TR6 yellow plastic fan. He had a machine shop remove 3/16" from the rear of the fan extension and 3/16" from the front of the extension for a total of 3/8" removed. 
That allowed for the yellow fan to fit in a forward direction, some have advocated mounting the fan backwards, anyway it's been on the car for a few years and works extremely well in the hot Florida summers. 
If this hub measures 3/8" shorter than the other, whatever it's for - it could be used as above. 
Tom 
60 TR3A 
61 TR3A 
62 TR4 
73 Stag 


Subject: [TR] Fan extension, but for what? 

Hi listers, 

On the right is a fan extension for a TS60000 era TR3A, on the left is a fan extension from ebay proporting to be for a 
TR2,3,4. I know if I were to install it on my car the fan would come into quick contact with the steering arm (if not 
the chassis brace), any idea what it's really for? 

http://picasaweb.google.ca/mcewena10/TimingChain?feat=email#5428229836982417426 

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