Hi, I'm new on the list. There seems to be a lot of knowledge about Triumphs
out there and I'd like to tap into it regarding the vacuum retard unit on the
distributor on my '71 TR6. Here's the story:
I recently replaced my dual vacuum capsule distributor with a rebuilt all
mechanical advance unit from TRF (pricey, but well worth it. I haven't had to
fiddle with the ignition since). I plugged the vacuum advance connections on
the carbs (dual Weber DGVs). I discovered that the vacuum retard switch on the
throttle linkage had been bypassed. The vacuum retard is connected directly to
the banjo fitting on the intake manifold. I tested the vacuum switch by
dropping it into a sink full of water and tried to blow air through it. It is
non-functional. The car seems to run pretty well with this setup and sailed
through Colorado emissions testing.
Now for the questions:
What is the vacuum retard doing to my timing? Do I need it at all? If not,
is it possible to remove the banjo fitting entirely? What was the purpose of
the vacuum retard in the first place?
Thanks for your answers.
Mark Stahlke
'71 TR6 (a bit rough around the edges, but I keep after it)
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