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[T3] AB dizzy timing


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Ok, so I'll count this as Type III content, as it is a question about the Type III A-B fuel injection distributor.


I have one on a stockish 1600 upright w/ dual kads. I'm using it as strictly mechanical advance. It's spec'ed in Bentley as having 15deg of mech. advance at the distributor, so 30 degrees at the crank. I found some people's conversions for measuring linearly along the circumference of the upright pulley to mark the 30degree mark, so I used this w/ my timing light to adjust the timing dynamically to advance to this mark at max advance.

Not really putting 2 and 2 together, I decided to have a look at the timing statically after I'd set it dynamically. I found I'd timed it to maybe a degree or two before tdc when measured statically. Then, of course, I realized that it's supposed to give 30degrees max advance at the crank... and if I'd timed it to 30degrees max advance, then it'd be at 0 degrees tdc when checked statically. Duh.

Now, I kinda doubt that I had good figures for determining the 30degree mark on the pulley, and I may not have measured well. How well can I trust that my distributor does not have, say, 32 or 33 degrees actual advance at the crank? Are they pretty reliable? Now, if this were being installed in a Type III and statically timed a la Muir, it would be set to 0 degrees; when you floored the Type III at medium/high rpms, the vac advance wouldn't be engaged, and the conditions would be a lot like my engine...

So, should I retime the car statically to 0deg tdc with this dizzy for a little more oomph? Or do I likely run the risk of killing my engine by running it too advanced?

-Greg

(p.s.: it seems to drive a bit more smoothly than with the 009. Also, I'd assumed that the 009 cap and rotor would just swap on, but the Type III shaft size is different, so I installed the Type III cap and rotor.)

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