I cut the crank and shortened the spring per Jack's instruction plus
trimmed the ends to get just the right lip compression on the crank and it
still leaked.
I'm done with em and going with Cris' seal.
Jim G
-----Original Message-----
From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
Behalf Of J.C. Hassall
Sent: Tuesday, October 05, 2010 6:09 PM
To: Dan Cronin
Cc: Friends of Triumph Triumph
Subject: Re: [Fot] Crank--Rear Main / Scroll
On 10/4/2010 2:02 PM, Dan Cronin wrote:
> Listers
> Some time back in mid 07 I purchased a Crower E4340 Billet Steel Crank for
my
> TR motor build which I am just now getting around to......had the rear lip
> milled to the 63.5mm (2.5") that was the collective thought (manual and
> instructions for the improved rear main lip oil seal) and now find that
most
> think this was in error! Am I right that now the proper size for the seal
is
> 71.57mm (2.8"), and if so what is one to do if he has the "old" dim.? Can
the
> journal be built up by hard chroming and them re-milled to size? What
other
> options can you think of that would permit successful use of the 2.5"
scroll
> with the lip seal? What have others done to surmount this problem?
> Thanks, Dan C.
>
>
Dan, on one of the rare occasions when I actually read instructions, I
had my crank cut to 2.500". Before I reassembled the engine I learned
about the leaking seal problem, so shortened the spring (per Jack's
guidance) to 8.25". I didn't trim the seal split ends, but will this
winter when the engine comes out again. Damn damn damn. This time I'll
shorten the spring to 8.0 and trim the split per Tony's guidance.
hth
jim
--
Jim Hassall
Blacksburg VA
'63 TR4 in autox preparation
99% finished, 90% to go
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