Tony:
You do indeed need to machine the cap.
As for how to pin the bearings, you use a countersunk machine
screw made of brass. Use brass because it will not damage the journal on
the crank if the bearing wears excessively, allowing the screw head to
contact the crank.
Use two per bearing on the bearings mounted on the bearing cap.
I would imagine a 4-40 countersunk brass screw would be just fine. This
requires two drilled/tapped holes for each bearing, as will as drilling
and countersinking the two bearings in two places (total of four
countersinks).
Cheers,
Vance
-----Original Message-----
From: 6pack-bounces+vance.navarrette=intel.com@autox.team.net
[mailto:6pack-bounces+vance.navarrette=intel.com@autox.team.net] On
Behalf Of Tony Gordon
Sent: January 20, 2008 7:12 PM
To: triumphs@autox.team.net; 6pack
Subject: [6pack] TR6 Thrust Washer question
<snip>
I did find MJBs advice that the lower thrust washer be pinned in place
with
a roll pin, and his follow-up advice that said that pinning was a bad
idea
... I have a very vague recollection from my early 4 pot Ford engines
that
the thrust washers had cutout tabs to stop them rotating (I think...).
If a
360 deg thrust washer is installed by machining the main bearing cap, is
there a need to have a means to stop them rotating .... I'm guessing yes
...
if yes, any suggestions on how this might be done?
<snip>
**************************************
Tony Gordon
72 TR6
**************************************
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