Re: [Roadsters] distrubitor

[Paul Courson <cour.jpeg@gmail.com>]

Gary has sent me an excellent explainer of Nissan's antipollution
system that included different distributor weights and springs for the
U.S. market. He gently corrected my misunderstanding of the "smog
pump," by pointing out it injects air, not exhaust fumes !!! Over the
years, the notion of a "smog pump" and how it seemed like such an
afterthought, made for a much darker grasp of the matter, for me.
Thanks Gary for the illumination.

My 311still had the "smog pump" on there.  The car had 41,000 original
miles when I bought it in 1984, and as far as I could tell, the air
injection system still worked. I got a set of 7.5 degree mechanical
advance weights and countersprings and installed them when I took it
off, and the car's performance improved quite a lot.

Paul

On Tue, May 29, 2012 at 1:50 PM, Gary and Cindy Ault <aultgc@att.net> wrote:
> Linda,
>
> Both Dean and Dann offer recurve kits which have the non-smog springs,
> cam and
> weights. B Others may as well. B They may also have just the springs,
> but I
> haven't checked. B I don't know whether the emissions control
> configuration
> springs are still available or not. B If interested, I can look
> the part up the
> part numbers. B As Paul indicated, all you need is the 7.5 cam
> and springs. B I
> think Nissan lists different vacuum control units for
> pre-smog and smog
> distributors, but I think the calibration was the same.
> Let me know if you want
> the numbers.
>
> Gary
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