48ida venturi question
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Senior Member
Joined: May 2002
Posts: 22,465
From: California
so lets say i have the engine in the competition prep manual, and i'm starting with a 48 weber, jetted like they have in the comp manual, which uses a 42mm venturi.
if i go to a 38mm venturi, which is 20% smaller, does it run richer? 20% richer?
i'm thinking 38mm might be good for break in, and smogging the thing
if i go to a 38mm venturi, which is 20% smaller, does it run richer? 20% richer?
i'm thinking 38mm might be good for break in, and smogging the thing
Fabricator
Joined: Jan 2004
Posts: 1,322
From: Central Ohio (Hebron) Zephyrhills Fla.
Originally Posted by j9fd3s' post='900955' date='May 24 2008, 02:15 PM
so lets say i have the engine in the competition prep manual, and i'm starting with a 48 weber, jetted like they have in the comp manual, which uses a 42mm venturi.
if i go to a 38mm venturi, which is 20% smaller, does it run richer? 20% richer?
i'm thinking 38mm might be good for break in, and smogging the thing
if i go to a 38mm venturi, which is 20% smaller, does it run richer? 20% richer?
i'm thinking 38mm might be good for break in, and smogging the thing
The carb will run richer with the smaller choke size.
With a 36MM choke I run a 210 main 80 air F-7 tube. There is a lot of stuff to change for road racing.
Not much on the street.
Lynn E. Hanover
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