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I've just re-timed the 1500 by the vacuum method that was brought up recently over in the Triumph forum.
It went surprisingly well. (Before I went through all that business with the dizzie, the car was running, I believe, very well). After re-fitting the dizzie I get the engine up to temp - the reading on the vacuum gauge was 14 (inches of Hg, I think).
I slowly rotated the dizzie clockwise until the reading showed a max of 20. (Engine revs also went up from 800 to 1300). Then I backed off to 19 and set the idle back to 800 rpm using the idle screw on the carb.
I checked with a timing light on the crankshaft pulley marks and this new setting was about 13 BTDC at 800 rpm.
I'm quite pleased about this because the engine now is operating more efficiently.
During this set up I had plugged the vacuum retard at the dizzie with a golf peg.
I'm wondering if there is any benefit re-attaching this vacuum line.
It went surprisingly well. (Before I went through all that business with the dizzie, the car was running, I believe, very well). After re-fitting the dizzie I get the engine up to temp - the reading on the vacuum gauge was 14 (inches of Hg, I think).
I slowly rotated the dizzie clockwise until the reading showed a max of 20. (Engine revs also went up from 800 to 1300). Then I backed off to 19 and set the idle back to 800 rpm using the idle screw on the carb.
I checked with a timing light on the crankshaft pulley marks and this new setting was about 13 BTDC at 800 rpm.
I'm quite pleased about this because the engine now is operating more efficiently.
During this set up I had plugged the vacuum retard at the dizzie with a golf peg.
I'm wondering if there is any benefit re-attaching this vacuum line.