[Roadsters] Solex Carb Starting Issues

[Walter Peterson]

I usually give it 2-3 pumps of full throttle before starting and then have
to hold the idle higher with the throttle for a minute or so.  I often
forget to wait for the electric fuel pump to fill the carburetors before
pumping the pedal and then hitting the starter.  If I goof this up I could
over prime the start and have to wait a minute or just run the starter to
clear it.

I use a pair of early 44's and while the "starter valves" do function, they
really only hold the idle higher once it's started.  I've tried to tune them
up but they never delivered the required fuel enrichment needed.
In the case of the SU, the Main jets get dropped to seriously or even
excessively enrich the mixture.  I recall setting SU chokes to some half-way
point and having to keep it that way for some time.

Happy Motoring,

Walter Peterson
Goleta Ca, 93117

805 968-7290 Home
805 689-7557 Mobile

H20 Stroker

-----Original Message-----
From: datsun-roadsters-bounces+walter.peterson=cox.net at autox.team.net
[mailto:datsun-roadsters-bounces+walter.peterson=cox.net at autox.team.net] On
Behalf Of Gary and Cindy Ault
Sent: Saturday, August 30, 2008 8:26 PM
To: datsun-roadsters at autox.team.net
Subject: [Roadsters] Solex Carb Starting Issues

List,

67 2000 Solex (late, I believe).  Runs very well once warm.  Fuel economy in
the mid-20s on the highway.  210 main jets/55 air correction jets.

This puppy doesn't like to start.  The starting device, a.k.a. "choke",
appears to be set up correctly from a mechanical standpoint, but is no help
in
starting the car.  (A conversation with Todd at Wolf Creek indicates
installation is OK.)  My current procedure for starting the car is to give
it
one full pedal shot then crank it.   If that fails, which it always does,
repeat.  I have always been able to get it going, but this is a poor
comparison to my '66 with SUs which starts on the "choke" every time
regardless of ambient temperature.

Who out there has experience with Solex carbs in low temperatures (32 F and
lower)?  Will the "pump it and crank until it starts" approach work in cold
weather, or does one really need the starting device?  Does it work at low
ambient temperatures when it doesn't at moderate temperatures?  (60F versus
32F).

Afraid to take it to Wisconsin in October, I am

Gary
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