[Fot] early TR3 input shaft question

[malaboge at aol.com]

    I agree, loose is the way to go with that bushing. The original style also had a chamfered edge on the rear of the inside diameter, probably to help the insertion of the third motion shaft into that bushing. The nose of the original third motion shaft (rear mainshaft) had a scroll cut into it to help lubrication, but the original bushings were smooth on both inside and out.
 
 I think the factory went to the larger needle style bearing to alleviate the wear issue in the bushing as it allowed the trans to pop out of third gear on decel when that bushing got worn enough to allow movement at that interface.

Good luck and check the triangular thrust spacer at the back of the box for cracks emanating from the corners of the teeth cut into it.

my bushings are a bit worn as well...
Nick in Nor Cal
   
 
   
 
  
 
 -----Original Message-----
 From: rkramer3 <rkramer3 at austin.rr.com>
 To: Enquiries Road & Track <enquiries at roadandtrack.net.au>; fot <fot at autox.team.net>
 Sent: Wed, Aug 19, 2015 3:01 pm
 Subject: Re: [Fot] early TR3 input shaft question
 
  
   
  
 That's the type of info I was looking for. Thanks Terry 
 Bob Kramer 
 rkramer3 at austin.rr.com 
  
 ---- Enquiries Road & Track <enquiries at roadandtrack.net.au> wrote:  
 > the hard bronze bush system was used on all vanguards and non syncro TR;s. 
 > The bush needs to float between main-shaft spigot and input shaft inner, so 
 > about 0.003" clearance both inside and outside. we always made them with a 
 > deep cut spiral in them to transfer oil. they will feel sloppy and the 
 > input shaft will move around, but its no hassle in a race car box that 
 > comes apart regularly and is not expected to last 100,000 miles. Use LG3 
 > spec bronze material to make them 
 >  
 > Terry 
  

  
 
   
    
  

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