Fitting 123 ignition

[David C]

I finally got around to fitting a 123 ignition to my 403.

When I first fitted it the distributor did not go in far enough for the dog to engage properly in the drive. I then machined about 1/8 in off the base of the distributor to make the shaft longer. This then meant that the base of the distributor fouled on the bolt with spring that holds the timing adjustment plate. I removed the bolt and spring and replaced with a shallow headed bolt with spring washer and used a locknut underneath.

Anyone else had any issues? I spoke to a couple of people with the conversion before I bought mine and neither mentioned installation issues.