[Healeys] distibutor

[Dave & M]

Patrick,

The original 100-M distributor would have been marked DM2 & 40520. The
standard 100 distributor would have been marked DM2 & 40495.

The Pertronix replaces the points & condenser. It does not replace the
centrifugal advance mechanism & other innards.

The DM2 has a really poor centrifugal advance mechanism, not very
precise. With a little work the advance mechanism can be replaced with
  25D parts from a later distributor. The 25D has much more precise
centrifugal advance curve setting potential.

If you are uncomfortable doing such modifications, Jeff at Advanced
Distributors could do the conversion, supply missing parts,  & give
you a custom advance curve to what ever you desire.
http://www.advanceddistributors.com/

A distributor modified as above could be equipped with a Pertronix
unit. The only visible give away would be two small leads exiting the
distributor body instead of one lead.

Regards,
Dave Russell
BN2

patrick harris wrote:
 > What should I have for a distributor number on my 100-m and if the
 > pertronix unit is fitted to replace points does it also come with
 > advance mechanism and other innards for the distributor.  My
 > distributor seems to be missing various springs and advance
 > mechanisms internally.  I would like to get it repaired and have it
 > look factory per m spec but be as reliable as possible .  I am
 > suspecting that a dual point mallory would be frowned upon by the
 > concours crowd. thanks pat