[TR] TR4A - plastic fan - advice?

[Cliff]

Hi George,

I can see how, with the spacer, you can get the clearance to the radiator.  I want to still be able to use the dog bolt’s head to turn the crank, which I don’t see is possible now, even if I manage to mount the yellow 8 blade fan backwards.

Someone referred to Macy’s garage (thanks!), who offer a direct bolt-on mechanical fan for the TR2-4A engine.  It does what I want (clears the radiator, improves air flow, and leaves the dog bolt head free) for the same price as an electric fan kit, so I’ve ordered one and expect to be quite pleased.

Thanks again for all the advice,

Cliff



From: Geo Hahn 
Sent: Thursday, February 19, 2015 8:33 AM
To: Cliff 
Cc: Triumphs 
Subject: Re: [TR] TR4A - plastic fan - advice?

I used the 8 blade fan backwards on my TR4.  I do not recall if I had to enlarge the center hole.  I did have to use a spacer to move it forward slightly (made from a piece of plastic cutting board).

Note, it's a TR6 yellow fan, just painted black to make it a bit stealthy.

IMO, 1/4" clearance is adequate if the usual radiator braces are in place, motor mounts good, etc.

Geo

On Wed, Feb 18, 2015 at 8:46 PM, Cliff <cliff_hansen at outlook.com> wrote:

  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.

  But now I think I'd rather not pull that dog bolt if I don't absolutely have 
  to.

  Options:
  1 - leave as is and put the original metal fan back on, at least, it’s a 
  semblance of a fan.
  2 - mount the plastic fan frontwise and give up the access to the end of the 
  dog bolt.  Mounted frontwise the fan is only about 1/4" from the radiator.
  3 - go modern and put an electric fan.

  I'm guessing many on the list would choose Door Number 3.  But I'd really 
  rather have the plastic fan, if practical, because, well, its paid for.

  Has anyone fitted one of these plastic fans, and if so, how did you mount 
  it?

  Thanks in advance,

  Cliff




  From: davehogye 
  Sent: Monday, February 16, 2015 7:57 PM
  To: Cliff 
  Subject: Re: [TR] TR4A fan hub extension - removal?

  Hi Cliff,
  There is a hefty long bolt that connects it to the crank shaft.

  Dave H.
  Santa Cruz, CA


------------------------------------------------------------------------------

  From: "Cliff" <cliff_hansen at outlook.com>
  To: Triumphs at autox.team.net
  Sent: Monday, February 16, 2015 6:49:26 PM
  Subject: [TR] TR4A fan hub extension - removal?


  I need to remove the fan hub extension (part 128318).  I’ve taken the nuts off of the 6 bolts that pass through the pulley.  It seems still attached solidly.  Rusted in place perhaps?  Or is there something else to be done to get this piece off?

  Thanks,

  Cliff



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