We've seen this quite a bit in GT-6 situations also. The fix is to add
another locating pin, lighten the flywheel, maybe even consider an aluminum
one, and use torque and loctite on the securing bolts. Lock washers are not
a solution. Either grade 8 or aircraft alloy fasteners should be used. Some
have also gone up one size on the fasteners used to secure flywheel to crank
with desirable results. The key to the problem is the large mass the
flywheel poses vs the mechanical advantage of the sheer moment on the
fasteners and pin. All of the above will improve the situation. Ed Ceilley
(GT-6) had a similar recurrent problem which was finally resolved by the
above procedures. That was years ago and he has not had a problem since.
As you I am sure realize this fix will require some effort and removal of
the components, but the payback is there. I suggest, if you haven't already,
have the crank balanced with the front pulley, flywheel and pressure plate
installed by a dependable shop. Be sure to index the crank, flywheel and
pressure plate relative to eachother with some sort of markings for future
assembly operations.
Best of luck.
Russ Moore
-----Original Message-----
From: owner-fot@autox.team.net [mailto:owner-fot@autox.team.net]On
Behalf Of Charly Mitchel
Sent: Saturday, July 05, 2003 3:19 AM
To: Friends of Triumph
Subject: Flywheel woes
Today (Friday), I was running my TR6 in the SOVREN Historics @ Pacific
Raceways in Kent WA, when during my qualifying session, I suddenly felt a
vibration and the clutch wasn't operating fully. Upon removing my
transmission I discovered 3 of the bolts holding the flywheel on were
sheered
off and the last one was about half way out.
I'm looking for a fix I can do tomorrow(Saturday) and get me back on the
track. Anybody have any suggestions? I've heard of extra pins in the
crankshaft end and putting loctite around the crankshaft snout to flywheel
connect as well as the bolts. The extra pins in the crank won't be possible
until I take the motor apart. Any particular bolts work better? Lock
washers?
Any ideas?
Charly
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