Peter---Yes, the "std." is .092 thick, and sometimes it isn't stamped as to
size, as are to oversized ones. I'd just replace the .090 with a .097 (this
would be the +.005) which should get you to your goal of .005 running
clearance. You'll probably get a pair of these in a bag, so save the other as a
replacement about 50,000 miles from now. Leave the +.030 where it is. This
should cause no interference at the connecting rods.
If you feel your engine block or crank is worn to a point where there are
special needs, then go with a custom set. To me, it doesn't seem that there is
this need.
Dick
-----Original Message-----
From: PeterSchop@aol.com
Sent: Tuesday, November 18, 2008 11:15 AM
To: 6pack@autox.team.net
Cc: triumphs@autox.team.net
Subject: [6pack] What size thrust washers do I need?
I measured my crankshaft end float the other day and found it to be just
under .012". I would like to get the end float closer to .005" so I dropped
the
pan, took off the rear main bearing cap and removed the thrust washers. What
I found was one marked "STD" and measured at .090" which showed a lot of
wear and the other marked "+030" that measured .122" and showed very little
wear. I believe that STD should be .092" ?
I have read online that the front washer should not change size because it
gets very little wear and you don't want to move the crankshaft out of place.
I have also been told that both the washers should be the same size so to
center the crankshaft which also makes sense. TRF sells sets of thrust washers
at STD, +.005", +.015" and +.030" which I believe both washers in set are the
same size.
Now I would like to reduce my end play from just under .012" to just over
005" which means I have to add .006" to my thrust washers. In order to do that
I need a total of .218" with both thrust washers measured together. I like
the idea of using Scott Helms's solid bronze thrust washer. I could have a
096" made and my use my .122" or if the front should not change I could use
a
STD .092" and make a .0126" or if the crankshaft should be centered, have two
109" made, all which would equal .218"
Oh, one more thing, TRF's list at $6.95 a set and Scott's are $20 each and
are probably worth every penny of it. If you still follow me, any comments as
to which way to go?
TIA
Peter Schoppelry
TR6 '69
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