276 flathead test drive big improvement.........but?

[36tudordeluxe]

Originally Posted by 51 MERC-CT

At this point all mention of cam and cam duration are meaningless.
Perhaps the proper adjustment of the idle mixture screws will bring it closer to where it should be.

Have adjusted idle mixture screws to a lean setting as described by Edelbrock. Out looking for a timing light to help solve the problem, the one I have is outdated and missing the spark plug adapter.

[51 MERC-CT]

Originally Posted by 36tudordeluxe

Have adjusted idle mixture screws to a lean setting as described by Edelbrock. Out looking for a timing light to help solve the problem, the one I have is outdated and missing the spark plug adapter.

Now that you have set to a lean setting and it is running, adjust for best vacuum and idle.
If the spark plug adapter is what I think it is, it's nothing more than a metal conductor that fits between the plug and plug wire to provide a spot to clamp the sensor. (nothing fancy and probably can be made up out of available materials.)

[36tudordeluxe]

Originally Posted by 51 MERC-CT

Now that you have set to a lean setting and it is running, adjust for best vacuum and idle.
If the spark plug adapter is what I think it is, it's nothing more than a metal conductor that fits between the plug and plug wire to provide a spot to clamp the sensor. (nothing fancy and probably can be made up out of available materials.)

Have ordered timing light from Amazon, won't be here until the 10th. By adjusting do you mean rotating the distributor?

[51 MERC-CT]

Originally Posted by 36tudordeluxe

Have ordered timing light from Amazon, won't be here until the 10th. By adjusting do you mean rotating the distributor?

By adjusting, I mean the IDLE MIXTURE SCREWS

[Talkwrench]

Don't take what Jack said to heart Im sure he didn't mean it.. The dial back light is a handy tool, but learn how to use the vacuum gauge in the meantime. I'd help you out but I wont be in Vegas for another 4 weeks [and counting wooooh!]

[B-O-B]

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Go to auto zone & they wil loan you one. You pay for it then when you are done you return it for your money back. Better than waiting till the 10th.

[RandyZ]

I have a 276 with the L-100 cam and it idles about 14" vac.

[40cpe]

Randy, approximately what is the idle RPM?

[billwill]

Use a paper clipgoodluck

[36tudordeluxe]

Battery (OPTIMA) won't hold a charge now so didn't get a chance to adjust idle mixture screws for optimal vacuum reading. Was getting 10-11 vacuum HG at 850 RPM. Renting the light was something I didn't think of but like I say won't turn over now and quite honestly my frustration level is such that I need to move on to something else. Going to start hanging some of the front sheet metal while I've got someone to help me. Monday am leaving for a couple of weeks at the beach.

[40cpe]

deleted duplicate post

[Ol' Ron]

I got my post mixed up, thought he was running a 59a engine. Getting old.

[36tudordeluxe]

Originally Posted by Ol' Ron

I got my post mixed up, thought he was running a 59a engine. Getting old.

Ol' Ron knew what you meant; I've got the original 8BA distributor along with the one you machined for me.

[Ol' Ron]

I didn't know I did that? When?

[Richard in Florida]

Originally Posted by Ol' Ron

I didn't know I did that? When?

Not to worry, Ron. I did it.

[36tudordeluxe]

Ol' Ron sorry about the mix up on the distributor, got my wires crossed again!