If you are "sensitive" to changes in the way your TR behaves, you should
feel anything happening to the bolts in the drive train. i.e. A guy
brought me his '69 a year or so ago and asked me to drive it. He said it
had a strange vibration in it. Indeed. All four of the tranny flange to
propshaft flange bolts were about to fall out. Unbalanced parts, big
time. They were garden variety hardware bolts and nuts, with threads
clear up to the head (Altho worn down) Two of them were 5/16". The point
is that I agree with Robert C. It is unlikely that a (breakdown) failure
should occur before the driver notices that all is not well.
The original flange bolts are extremely tough and could last the life of
the car, if not allowed to loosen and stress themselves. Replacing the
nyloc nuts will give more confidence that failure is unlikely.
Dick
From: rclark@robertsonclark.com(Robert N. Clark) Date: Thu, Jan 10,
2008, 1:31pm To: vance.navarrette@intel.com (Navarrette, Vance),
75TR6@tr6.danielsonfamily.org (Bob Danielson), 6pack@autox.team.net
Subject: Re: [6pack] Special Bolts Needed?
Bob,
Is there are reason why you are replacing the original nuts and bolts
other than to have nice new hardware? Is there some indication that
these bolts need replacement or are prone to failure? It seems the weak
link in our cars is the u-joint and failure of all 4 flange bolts at one
time is quite remote.
Bob Clark
'69 TR6
Bob:
I was completely
ignorant of this when I reassembled my driveshaft and axles. I used
standard Grade 8 hardware. So far no issues, but if you read my obituary
and it says I died in a car crash, well, you will be able to guess what
happened.
Vance
A while ago there was a discussion about the special bolts that TR6
calipers use, but how about the driveshaft and axle flange bolts? TRF
lists them in their catalog as "Special Bolt # 107960". Is this another
example of the collar being a unique size relative to the thread? At a
$1.50 each the price adds up pretty fast.
Thanks
Bob
Bob Danielson
1975 TR6 CF38503U
Running w/ Throttle Body Injection http://tr6.danielsonfamily.org
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