Bob,
I believe that new (unused) cam sprockets are always unmarked. You put the
mark on it after you time the cam. IMHO the best way to set cam (valve)
timing is to "degree" it with a dummy pushrod, degree wheel, and dial
indicator (the procedure is in the comp manual). However the equipment and
procedure are quite intimidating to a lot of folks, so you can use the
procudure in the Bentley manual to check that your cam timing is correct.
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 Bob Fabie
Sent: Sunday, July 27, 2003 2:42 PM
To: triumphs@autox.team.net; 6pack@autox.team.net
Cc: Sally or Dick Taylor
Subject: Original Cam Sprocket Timing Mark
I'm in the process of installing my new stock TR6 cam. With the help of Dick
Taylor and Bentleys, the cam is properly set and its sprocket is ready to be
lined up with the OEM dimple mark on the front cover backing plate. My cam
sprocket did not come with any OEM marks and the mark I punched was for my
old
Piper cam so it doesn't apply.
The Haynes manual shows a picture of the cam sprocket with the OEM mark in
the
valley of one of the sprockets and Bentley's shows the OEM mark on the tip.
I
can get the chain to properly align using the valley, but not the tip.
Which
one is it?
Does anyone have an OEM cam sprocket who can tell me where the mark is
placed,
i.e., on the tip or in the valley?
If all else fails, does anyone know where I can purchase a new cam sprocket
with OEM markings?
That half a tooth can make a big difference, so I'd appreciate hearing from
the collective wisdom of the list.
Thanks for your help.
Bob Fabie
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