Still working on going through and getting a good setting with the fuel system.
The fuel pump is sorted……..it was simply a blocked internal filter causing the problem. Have also fitted a new short fuel line between the pumps and 3-way-valve as it was beginning to crack.
A specialist has gone through the carburetors to make sure all settings are correct, or at least seem sane, before the car is put on a dynamometer in a few weeks to measure power output and fine tune the engine. The PPO (prior to previous owner) had overhauled and synced the carbs while he had the car, and Webers are usually set-and-forget, but I’ve learned that a whole lot of strangeness can happen when someone gets their hands on an unusual automobile, if even for only a few months…
He didn’t find anything obviously mis-matched in the carbs, or any serious imbalance, just way out of tune and general wear – not one specific thing. He says that a full setup is the only way to improve things and thinks that the poor running (ref. earlier posts here about the same issue) is a combination of numerous general wear items (carb jets etc) and no one big issue.
I had a suspicion she was running a bit rich, judging both from the two black spots on the rear wall of the garage as well as the amount of soot expelled from the exhaust. That would also affect acceleration and power in general. So the specialist’s findings match well with my own observations and thoughts. His adjustments did result in a nice improvement, but there’s still more to be done.
When we get her running according to spec, we should see somewhere in the neighborhood of 280hp when all is said and done. I’ve been considering removing all the US smog equipment, but that would mean new cams, which is more work than I’m prepared for at this point.
Right now I’m more interested in getting the repaint done and actually taking her out for a drive!
Let us know how the dyno test goes.
Absolutely. Scheduled for the 19th.