I think I'll tackle the ignition. It has been converted to 12v. The wiring to the coil is currently bypassing the harness. I have a wire on a toggle switch directly from the battery to the coil, no resistor. Will try new plugs, coil & points. And redo my temp wiring. It is on temp wiring because I have my dash out.

Regarding the intake & exhaust there was some corrosion on the face of the exhaust manifold and I had to have it machined. The two are no longer connected. I brazed close the two holes that are on the exhaust manifold that feed the heat box. It makes taking the intake off easier and I see all side of the intake good. Can see no issues with the intake.


The idle screw I referenced was the idle speed screw. I had the idle speed screw in all the way. I've had the idle mixture screw anywhere between 3/4 turn out an 3 turns out.

I did not wiggle the valves to see if the guides were loose. I'll do that. What should the vacuum be ? When it is running at high idle (2k rpms ?) no choke the vacuum is at 18 inches. When at low idle with the choke on around 15 or 16. When I give it gas it drops.

The engine sounds really good when it is running, no smoke, nice and smooth and relatively quiet.

I'm taking a few days off for the holidays will report back when I make some progress.


Jason
1946 GMC COE
1967 Pontiac Lemans Convertible

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