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Old 03-21-2004, 08:22 AM   #1 (permalink)
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vacuum/mechanical advance

Can I convert my vacuum advance dizzy to a mechanical on a 69 engine.
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Old 03-21-2004, 09:19 AM   #2 (permalink)
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vacuum/mechanical advance

As far as I know, the only things you need to do are: 1) elimate the vacuum canister or plug the vacuum source on the carb; 2) have you distributor recurved with new springs and/or the advance stop bushing to allow the amount of total advance and the rate at which you achieve it.
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Old 03-21-2004, 12:23 PM   #3 (permalink)
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vacuum/mechanical advance

Why would you want to eliminate the vacuum advance? All that's going to do is hurt your performance and fuel economy.



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Old 03-21-2004, 03:27 PM   #4 (permalink)
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vacuum/mechanical advance

[quote]
On 2004-03-21 12:23, johnebli wrote:
Why would you want to eliminate the vacuum advance? All that's going to do is hurt your performance and fuel economy.




Im going with a side draft webber system and it requires a mechanical advance
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Old 03-22-2004, 05:05 AM   #5 (permalink)
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vacuum/mechanical advance

[quote]
On 2004-03-21 12:55, chilly460 wrote:
As geronimo said, just disconnect the vacuum source. Then check the advance at 1000-1500-2000-2500-etc and make sure you have a nice smooth advance curve. I like to have full advance by 2500-3000rpm

Chris, Do i remove the spring and leave the weights, Do I need to set the weights to a certain point. Thanks Tim
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Old 03-22-2004, 07:20 AM   #6 (permalink)
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vacuum/mechanical advance

You'll need the springs to control the weights. Accel sells a little kit I think with the springs in it. Most times you end up with a light and a heavy spring, but YMMV. A good timing light and patience is required for a Ford dizzy. MSD mucho easier.
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