Jim,
I live in the San Francisco Bay Area and the last time I drove the TR4 up to
Lake Tahoe I turned my Stromberg carb jets 'in' (leaner) by about 1/2
revolution which seemed to be about right for the higher altitude.
Carl
'63 TR4 since '74
Next month Triumphest is being held at South Lake Tahoe, elevation ~6200
feet, on the way up there via Hwy 395 or 50, there are several passes higher
than that, some up to 8000 feet high. From my experience and some hearsay,
SUs, Strombergs and Zenith carburetors all need to be readjusted to maintain
decent operation at these higher altitudes. Without adjusting them, none of
these cars are going to be performing anywhere near their best without some
help.
Obviously, a mixture readjustment is the answer. However, trying to do this
on the side of the road or at a rest stop is not the easiest thing to do.
Does anyone have a short-cut rule of thumb or a guess for compensating for
each 1000 feet of altitude. For example "two flats leaner (on the SUs) for
each 100 feet", etc.
Anyone care to toss their 2 cents in on this issue, informed or otherwise!
TIA, Jim
PS. There is still room at the hotel for anyone that hasn't registered for
Triumphest as yet! See:
http://www.triumphtravelers.org/Triumphest04/Trphest04Home.php
Jim Bauder
'58 TR3
(New!) '68 TR250
Scottsdale, AZ
Check out the new British Cars Forum:
http://www.team.net/the-local/tiki-view_forum.php?forumId=8
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