I am slowly getting the engine bay of my 67 Duetto back to what I believe/understand to be 'as factory'. I think I am nearly there but I am not convinced with my current choice of ignition coil (Bosch 'Blue' coil) - see pic. below.
What is the general con-census as to what was the original fitment ignition coil - from the factory?
I am not after what is 'best' - I am after what was 'correct'.
I think you're right - not the Bosch blue, which probably didn't exist in 1967. My guess would be a Marelli branded coil, with an external, ceramic resistor. The early coil brackets had a flat surface (about 1" X 1") where the resistor mounted. Here's a photo I grabbed off ebay of the type of coil, resistor and bracket I'm describing:
Admittedly I'm not an authority on when Alfa transitioned from Marelli to Bosch coils, but I believe it happened after the Duetto era.
My only other comment would be to suggest that you zinc plate the housings of the voltage regulator and horn relay, since you have replated the other underhood hardware. When I judge a car, I look for consistency; evenly-dulled plating on all parts gives that "barn find" look, while fresh plating on everything reproduces the day-it-left-the-factory feeling. A mix of the two just doesn't look right. (And yes, I expect some hate mail for this remark from those who don't get concours).
I doubt the head nuts were chromed either, but if it were mine, I sure wouldn't be removing them)
sometimes you can go too far.......forget Pebble Beach, Ville d'Este, Goodwood and the rest....get it to how you want it to look, and then drive it
that bosch blue coil does look a bit modern, I agree, so I'd just get a new vintage look black or silver coil and stick either a Marelli or Bosch coil sticker on it, depending what yours originally was.
is the dizzy original, or has it been replaced with electronic?...in which case I guess the bosch blue was necessary.
(I notice the B.S.AU seatbelt standard plate on the bulkhead, so its a UK car correct?)
Thank you spiderserie4. Have have been reconsidering the head nuts as well - I have the originals, so may put back (again, undecided). Good spot on the BS AEU seatbelt plate. It is indeed an original UK car - delivered straight from the factory to London in June 1967.
Hi Ranz, Your black coil with brown top set up has come up my other research so well may be the answer. Have you got a picture of it you could post? Failing that could you describe the decal that is on it - if you have one. In answer to your other question I do not have a booster bracket under the washer bag - I understand that they did not come with boosters - not until later.