[TR] TR-4 Rear oil seal modification

[Bob Nogueira]

My crank mics out at 2.812. A set of NOS scroll seals mics at 2.822. 
Greg told me to have my mandrel, turned to 2.812.  I haven't received the
modified seal yet so I'm not sure what it will be but my guess is probably
2.816 or 2.817. That would then result in a radial clearance of your .0025
to .003  which half the stock clearance. 

Bob 
  
   


> -----Original Message-----
> From: triumphs-bounces at autox.team.net 
> [mailto:triumphs-bounces at autox.team.net] On Behalf Of Randall
> Sent: Tuesday, February 03, 2009 11:47 AM
> 
> All of those numbers seem huge to me.  I've got an old note 
> from Hardy Prentice saying the setting mandrel shown in the 
> workshop manual is marked .004" oversize (should be 2.818" 
> instead of the given 2.822").  ISTR Greg Solow and others 
> agreed.  But I thought that gave a radial clearance of about 
> .003" between the crank & seal (with the crank centered in 
> it's bearings).  And he didn't mention having to modify the 
> seal to achieve that.
> 
> Randall