Your problem especially with the tri carb is that the carbs are leaning out
due to the Ethanol in the gas today. What you have done is richened up the
mixture off idle.
The best answer is to install the rich needles and the car will come to
life.
David Nock
British Car Specialists
209-948-8767
www.britishcarspecialists.com
-----Original Message-----
From: Wayne Schultz
Sent: Thursday, October 30, 2014 11:16 AM
To: healeys@autox.team.net
Subject: [Healeys] Tri-carb poor running
Hi,
I was stymied by the poor part throttle response of my
friends tri-carb Healey. I checked and rebuilt the distributor, checked
the carburetors, mixture, cam timing, adjusted the valves, different
coil, etc. Everything I looked at was in spec. I then decided to try
different SU damper springs. The original springs were the original red
springs and measured at the proper 4.5 oz. at 2 . 6 inches or so. I
replaced the Red springs with Yellow springs at 8 oz at 2.6 inches.
Without changing anything else the results were dramatic. The power
comes on smoothly and the hesitant and poor light throttle response is
totally gone. Even with its early cam the car now feels pretty close to
my own BJ-8 in term of drivability and power. I can't tell you how many
hours of trying to fix this problem were fixed with $20 worth of
carburetor springs. My advice to anyone with similar problems is to
give the Yellow damper springs a try. Even if you think you tri-carb is
running well give the Yellow springs a try. I did have to adjust the
carburetor mixture a couple of flats to get the best idle after changing
the springs. I use 30# oil in the dash pots.
Wayne
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