F155 initial timing

[HemiAlex]

I just got done popping a spare f155 in my buddies 71 40.

I set initial timing at 11, assuming it was the same as my de smog 60 2F.

It seems to want less timing. Should I back it down to 7*?

We live at sea level and we will be taking it up to Colorado next week.

Rebuilt carb, valves set, new intake manifold gasket and all the odds and ends. Idles with 20 inches of stable vacuum. It has a slight pop out the exhaust at idle. It’s set at 850 rpm with the lean drop method.

Just looking for some guidance.

 

[Skreddy]

What distributor and is the vacuum hooked to it? I run my F so the BB is at the lower edge of the window at about 780 rpm idle with the vacuum advance distributor (hooked up).

I wouldn’t think 11 is excessive but I’ve also always just started with a baseline and figure the engine will tell me if it wants more or less.

How new is the gas?

 

[charliemeyer007]

I'd give it an Italian tune-up. First a bottle of gas dryer and a new filters. Its a tractor, tune by ear has meaning. Check the contacts inside the cap - aluminium oxide is an insulator - scrape it off if its really thick build up. Check the play in the rotor bug shaft. Mine from 82 was really sloppy causing the engine to run poorly/without power. With new chinesium $110 Delco it runs great. I'll make bushing for the real Delco this winter.