John, I think you got some bad advice with regard to sanding the mating
surfaces. Yes it will bring the scroll closer to the crank but only at the
top and bottom of the seal and certainly not the whole diameter. So what you
have is a seal with varying dimensions from the crank. Check it with a
feeler gauge and you'll see what I mean.
Again the comment about slight contact is contrary to how the seal is
designed to work. There must be a gap between the crank and the seal for
proper function.
Stick to the Manual and you'll have the best advise.
Good to hear that you are on the mend with you injury. Drive your TR that's
the best therapy I've ever found.
Jerry Van Vlack
----- Original Message -----
From: "John Gillis" <jgillis@gemini.tcd.ie>
To: <triumphs@autox.team.net>
Sent: Tuesday, June 10, 2003 5:50 AM
Subject: That Old Crank Seal!
> Having decided to stick with my original rear crank seal, allbeit
> with careful fitting using the centralising tool and finding an
> original in as good condition as possible. In addition to this I got
> advice from a well known G.B TR supplier, that with careful
> flattening on glass plate and using fine wet and dry, the mating ends
> of each seal can be slightly reduced, thus bringing the inner scrolls
> closer to the crank, he mentioned that this was the practice of a
> well known Triumph engine builder. He also said that any slight
> contact that may be made between the the seal and the crank would
> quickly be removed on the first firing of the motor. ANY COMMENTS.
> John
> P.S For those who know me: I have not been on the list for some time
> due to an accident I had, in which I just about removed my right
> thumb, thanks to the skill of surgeons and several pieces of fancy
> metal it is now back in place but still a bit of an appendage, I have
> many hours of Physio before I can put a spanner in my hand, and no
> the accident did not occur while TR'ing
> --
> John Gillis
> 1954 TR2 TS3618. October 1954 (ground up)
> Trinity College
> Dublin,
> IRELAND.
>
> Phones: 6081149 or 6081137 mobile: 086 1556589
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