Re: [GMCnet] Fan Shroud questions - one more thought [message #163161] |
Fri, 16 March 2012 12:33 |
enate98690
Messages: 23 Registered: January 2012
Karma:
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Junior Member |
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Hey Steve,
One more thought, there was SOME, good reason GM did the fan ring as they did. It clearly was not the cheapest, nor the most easily manufactured fan assembly by any means. Soooooo, that should tell you volumes as auto manufacturing, even with the GMC motorhomes, is all about cost saving where possible.
Thanks,
Keith Lee
-----Original Message-----
>From: Steve Southworth <midlf@centurytel.net>
>Sent: Mar 15, 2012 6:20 PM
>To: gmclist@temp.gmcnet.org
>Subject: [GMCnet] Fan Shroud questions
>
>
>
>I'm pulling the radiator and fan shroud off my front clip and am somewhat intrigued by the way GMC did this. On my 75 Vette the fiberglass fan shroud extends back over the fan, with some clearance between the fan blade tips and the shroud, enough to get a fan belt past. On the GMC, as most of you are aware, the fan "venturi ring", is mounted to the engine with a very tight clearance to the fan blades. This is an expensive method, parts and assembly time, compared to some of the alternatives used by GM.
>
>My question(s):
>
>Why did the GMC MH use this method?
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>Was it the method used on the Toro?
>
>What is the purpose of the tight tolerance between the fan and the venturi ring? Noise reduction? Fan efficiency?
>
>Just curious.
>--
>Steve Southworth
>1974 Glacier TZE064V100150 (for workin on)
>1975 Transmode TZE365V100394 (parts & spares)
>Palmyra WI
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