Mike, and list---Bentley got their info wrong when they printed the
timing to be at 4 deg. ATDC with the retard blocked. It should've read
with the retard connected. The Triumph Repair Manual, almost identical
to the Bentley, got it right.
Dick
Subject: Re: Dizzy Question
The 41352 model was specific to the 1971 model year. I has a different
advance curve than your earlier unit. The static timing for the 41202 is
12 deg BTDC and for the 41352 is 4 deg BTDC.
They both call for dynamic timing of 4 deg ATDC with vacuum retard
blocked.
The big difference is in the cetrifigal advance curves. At 3000 rpm the
maximum advance on the 41202 is 22 deg at the crank versus 30 degrees
for 41352. You may run into an over advance problem with the 41352.
Others may be able to elabotate more on this subject. I know that Berry
Price sleeved his posts to limit advance.
There is much detailed info in the Bentley Manual-pp.511 thru 517.Hope
this helps. Mike C '71 TR6
|