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Ported vacuum vs. full manifold vacuum
#11 · September 5, 2019, 6:43 pm
There are a number of ways to do it but you may want to limit the vacuum advance to 10 degrees. Billk
#12 · September 6, 2019, 12:29 pm
I limited the mechanical advance to 12 degrees with the limiters supplied. I also used a vacuum 'T" to get full manifold vacuum and everything seems to run OK.
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#13 · September 6, 2019, 10:23 pm
The vacuum advance will be in addition to the mechanical advance. Some distributors will allow too much vacuum advance. Best to check it to see what the max vac adv is. You should be able to check manifold VA by checking timing with the hose connected vs with the hose disconnected and plugged at idle. Billk