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RichardJ · 06-28-2019, 06:30 PM

>>Setting a points gap at .019 is just a starting point,<<

Not really.
A real gap of .019" should give a dwell of 31*, but the problem is that many people don't have a good sense of feel to actually get .019". It takes a soft tough and a perfectly straight alignment with the feeler gauge to get the right gap.
The movable point arm has a spring with only about 16 oz of pressure and can easily be pushed out of the way by the feeler gauge. This results in a narrower gap than you think you have and higher dwell reading.
It's best to use a feeler set that can be taken apart and use the single .019 strip.

>>pull the Vac line hose off the carb and plug it with a golf tee.<<

it is hard to stick a golf "T" into a metal vacuum port. Remove the hose from the vacuum canister and stick the "T" in the hose to stop any vacuum leak. If the carb is close to being adjusted correctly, there won't be any vacuum from a Ported Vacuum port, but it's best to plug it anyway.

06-28-2019, 06:30 PM	#75
RichardJ Registered User Join Date: Apr 2010 Location: So Cal Posts: 1,413	Re: 292 Questions >>Setting a points gap at .019 is just a starting point,<< Not really. A real gap of .019" should give a dwell of 31*, but the problem is that many people don't have a good sense of feel to actually get .019". It takes a soft tough and a perfectly straight alignment with the feeler gauge to get the right gap. The movable point arm has a spring with only about 16 oz of pressure and can easily be pushed out of the way by the feeler gauge. This results in a narrower gap than you think you have and higher dwell reading. It's best to use a feeler set that can be taken apart and use the single .019 strip. >>pull the Vac line hose off the carb and plug it with a golf tee.<< it is hard to stick a golf "T" into a metal vacuum port. Remove the hose from the vacuum canister and stick the "T" in the hose to stop any vacuum leak. If the carb is close to being adjusted correctly, there won't be any vacuum from a Ported Vacuum port, but it's best to plug it anyway.