Jerry,
There is a chance that the PO modified the flywheel per the Competition
Preparation Manual. On page 17, it says " Our latest modification to the
clutch and flywheel was to drill out the fixing bolt holes to 3/8" and
counterbore to this diamet into the flywheel 3/16". The flywheel was then
tapped to accept a 3/8" SAE bolt and a bolt fitted that had an unthreaded
portion under the head that would go into the flywheel counterbore."
If so, just open up the pressure plate holes to 3/8" and you're good to go.
Hope this helps,
Hugh Barber
Hollister, CA
'73 TR6
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net] On
Behalf Of Jerry C Shaw
Sent: Tuesday, March 15, 2005 2:10 PM
To: 6pack@autox.team.net
Subject: Clutch Attachment Bolt Size
I just unpacked my LUK clutch to attach it to my newly lightened, refaced,
and balanced flywheel. It turns out that the clutch cover bolt clearance
holes were too small to accomodate the 3/8"-24 bolts that were used by the
PO.
Upon looking at Bentley on torquing specs it says the clutch attachment
bolts are supposed to be 5/16" UNF, which would explain the difference.
How frequently do clutch attachment bolts strip out, to be fixed by drilling
out and retapping all 6 bolt holes with a larger thread?
Anyone else had this problem?
Thanks,
Jerry
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