What I did vs what I should have done.
We drove from Dallas (sea level) to Reno (about 5000 ft) and did nothing. The
car drove ok. once in Reno we leaned it out quite a bit and it ran much
better. Back through Taos and return to Dallas did not do anything. Car still
runs and drives but I really should get out there and do a tune up.
Here is how to tell: hold the piston up just a smidge with a flat bladed
screwdriver.
RPM increase means the carb is adjusted too rich. RPM drop means the carb is
adjusted too lean. RPM stumble, but returning close to normal or no change
means the mixture is about right.
-----Original Message-----
From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of Dave Connitt
Sent: Friday, December 2, 2022 9:50 AM
To: Triumphs <triumphs@autox.team.net>
Subject: [TR] Travel and tuning question
Hi all,
This coming summer my wife and I are planning a fairly long trip in my TR4A
leaving from Cincinnati, Ohio (altitude approximately 500â??). Our first
destination is going to be Colorado Springs, Co. to drive up Pikes Peak
(altitude approximately 14,115â??). Then north to Mt. Rushmore (altitude
approximately 5,700â??), then north to drive through Yellowstone national park
(altitude approximately 9,200â??). Thatâ??s going to be quite a swing in
altitude and I am wondering if I will have to occasionally tune the SU HS-6
carbs? Has anyone on the list done a similar drive? If so, how did your Triumph
run and what did you have to adjust?
Thanks in advance!
Dave Connitt
â??67 TR4A-IRS
DavesTR4A.com
Sent from my iPhone
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