[TR] Fan Extension and Steering Rack Proximity - A

[CarlSereda at aol.com]

Although your TR3/4/4A extension comparison picture looks convincing it's 
still hard to  believe TR4As came with a grooved extension from the factory -  
every 'grooved' TR4/4A fan extension I've seen is grooved to a different depth 
(including your Roger Williams reference - so slight to even make a 
difference). Your's is certainly one of the most dangerous looking deep cuts I've ever 
seen.
If I'm wrong - I certainly like to learn new things.
I would take calipers and check your wall thickness of your casting - my 
smooth one is only about 1/4" thick in that area - I imagine your's is getting 
dangerously thin - and ready to collapse, under high torquing of a crank bolt. 
Please let me know what you find!
Regards,
Carl
'63 TR4 since '74

Time for pictures:
http://mysite.verizon.net/kentech0822/triumph/fans/fan_extensions.jpg
 
-----Original Message-----
From: CarlSereda at aol.com [mailto:CarlSereda at aol.com] 
I've seen a lot of junk yard TR4As and whenever I saw a fan extension with a
groove in it - it seemed 'rubbed raw' ie; missing paint..
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