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TR3A tuning problems

To: <triumphs@Autox.Team.Net>
Subject: TR3A tuning problems
From: "M.W. Jordan Jr." <>
Date: Tue, 15 Apr 1997 16:56:15 -0500

I am trying to get a 59 TR3A running a lot better than it is right now.

The car has Stromberg 175CD carbs and will not run smoothly at speed
without the choke pulled way out.  It will idle fine with the choke in once
it warms up, but put any load on it and it sputters, backfires and
generally is not happy.

I disassembled the carbs, put new gaskets, needle valves and the like out
of a carb rebuild kit about a month or so ago.  The mounts to the intake
manifold are good, there do not seem to be any air leaks there.  Fuel
filter is fine and gas tank does not appear to have water or other
contaminants in the fuel.  

The Haynes manual describes the tuning of the Stromberg carbs as setting
initially and then lifting the piston about 1/32 of an inch, with a stall
indicating rich (or Lean, I don't have the book in front of me) and an
increase in idle indicating lean (or rich, see above).  When I try this
tuning approach, I get no difference in idle, suggesting the setting is
correct, but I know that not to be the case.

Any suggestions, or is the TR3A just very cold natured and I may not have
let it run long enough to really get warm - even though the temp gauge
works up to 160-170 when I do these tests.

Any help would be appreciated.

M. W. Jordan, Jr.
Greenwood, MS

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