Distributor question for early car
 

Building a 2 liter six. Originally it had Marelli. In another car a Bay Area wizard changed to a Bosch for me a 100 years ago with great results.
Based on that experience I was planning to change to a Bosch. The engine has S p/c, DC 30 cams and big valves. Need source for rebuild and reprofiling a Bosch (E) distributor.
Or am I better going with 1-2-3 …..
Thanks

Is it really possible to re-profile an E distributor ? go with the 1-2-3 . Did the 2 liters originally
come with a Marelli ? E and S distributors are the same excepting the rotor .

The’65 911 I used to have had a Bosch distributor.

Distributor
 

The 914-6 engine (T) had Marelli which is what I have.
And to clarify your question Richey, do you mean E and S same except for higher rpm red line?
Thanks

Yes , same except for the governor / rotor .

I would just go with 1-2-3, strong reliable ignition is key to a good engine. 123 will enable tuning your engine much more easily than distributors with springs. Not to mention bush / shaft wear. If you want to retain an original distributor for looks, consider getting it locked & fitted with Pertronix Ignitor and tune your curve in a programable CDI box.

It has been a really long time but Deering Industries in Long Beach, Ca and Stanton speedo in Stanton, Ca re-curve distributers I am sure there is still some old school hot rod shops that do it. It is not hard to do on your own, but it is very time consuming. I would call places like Wilhoit, Emory, even Patrick. If they don't do it they probably know somebody who does. It is not the rotor that makes a difference it is the weights and springs. They limit how much total advance, how fast it advances, and when it advances. Don't let someone convince you to buy or do something.

Source
 

Phunt:
You were right it’s been a long time…………he stopped doing it about 20 years ago……but nice guy.
Still looking for a source for recurving ( and rebuilding ) early Bosch dist.
Thanks