QUESTION - In thinking about installing
a Weber 34ICH carburetor in my Series Land Rover's 2.25L engine,
Can you tell me more about them?
ANSWER - The Weber 34ICH is a generic
carburetor designed to be adaptable to several different brands
of small engines. This means that the jetting is complicated enough
to require an expert to get it tuned as close as possible to your
engine's needs. However a 165 Main Jet , 190 Air Correction Jet
and F6 Emulsion Tube will normally get a stock Land Rover 2.25L
engine running acceptably well at or near sea level. At around
7000 feet try a 155 main jet. Webers tend to be sensitive to altitude
changes and need to be leaned out at around 5000 feet for proper
running. Because this Weber is designed for generic small engines
it often times comes with jetting that is too lean and will burn
pistons or valves. Be
sure to check the jet sizes before installing.
While the 341CH has more top end power than the Zenith it is a
lot more susceptible to dirt and water in the fuel and can frequently
cause problems if the fuel is not clean and well filtered. The
Weber's main jet is located at the bottom of the float bowl, where
it can be clogged with gunk. The Zenith and Rochester have their
main jets supported from above, and are less susceptible to clogging
The Weber 34ICH is a direct replacement for the Zenith carburetor
on your Land Rover 2.25L engine. If your Land Rover came
equipped with a Solex you will need to buy the Zenith adaptor that
rotates the carburetor 90 degrees.
I recommend the Rochester
B over the Weber 34ICH. The top end performance of the 34ICH is
less than the Rochester, The 34ICH is harder to jet and more often a source
of running problems. However it can be an efficient good performing
carburetor if properly jetted for your driving conditions and your
fuel is kept very clean and free of moisture.
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