Thanks for the info.
> Subject: mech. advance springs
> other than the "major" parts houses (Moss, Victoria British,
> Special Interest Car Parts, etc.) you can try some junkyards
> to try to find a donor distributor. The trick is that the
> distributor advance settings were typically changed from
> year to year in an effort to meet emissions requirements.
> also, and you probably don't want to hear this, but i
> doubt your distributor is in too great a shape. if
> there is any slop in the shaft bushing (from side-to-side)
> it is time for a rebuild. John Twist at University Motors
> rebuilds them (Ada, MI, I forget his phone number) and
> probably can supply advance springs as well. as i recall
> the price is ~$150.
> However, in my experience, I have found fitting a modified
> distributor works well. Aldon Automotive in England
> (APT in Riverside CA are their US agents) sell a recurved
> distributor, which is in a Lucas 43D4 body. It uses a
> ball-bearing on the shaft instead of a bronze bushing
> and is a much better made unit than the 25D4 (even a
> rebuilt 25D4). It comes with points fitted, but you
> can fit a Lumenition (same fitting kit as 68-74) with
> a slight bit of trouble. I have done this to mine
> slightly modified '73 and it runs wonderfully. the distributor
> is around $175 and the Lumenition kit (from SICP 800-556-7496)
> is about $150.