[Healeys] Distibutor Internals

[Dave Russell]

Hi Mike,

Jeff converted my DM2 distributor to 25D about a year ago. It DID make 
an improvement. Actually, I just kept my old distributor & he furnished 
a well rebuilt assembly.

The original DM2 advance mechanism is a very strange design with center 
pivoted advance weights. The timing was erratic over the rpm range, not 
just slow to return. The 25D is  much more conventional & in my opinion, 
more precise & repeatable. Jeff tailored the advance curve to my 
requirements & did excellent work in building it.

I can't say whether the later points would be an improvement or not. I'm 
using a Pertronix ignition.

Regards,
Dave Russell
BN2

rrengineer at dslextreme.com wrote:

>With all the talk lately about distributors and the testimonials for Jeff
>at Advanced Distributors, I thought I should add my two cents about the
>work Jeff a did for me on my BN2 distributor.  When Jeff rebuilt mine, he
>advised that I replace the BN2 distributor's innards with a 25D mechanism.
> He said the old BN2 advance mechanism would hold the advance too long
>after the car was back at idle.  The 25D mechanism solves this problem and
>drops the advance as the rpm is dropped.  I have not had a chance to try
>this out on the car yet, but from what others on the list are saying about
>Jeff's work I can only say that it will probably be an improvement.   I
>just won't have anythiong to compare it to.  Anyone on the list with a
>BN1-2 have any experience with this or one of Jeff's conversions?
>Mike MacLean
>56 BN2
>60 AN5
>_______________________________________________
>rusd at sitestar.net 
>
>Healeys at autox.team.net
>http://autox.team.net/mailman/listinfo/healeys