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#11
Re: Twin su or single 45mm side draft for l20b?
ddgonzal
Posted on: 2009/11/14 2:39
A single 45 on a plenum manifold will flow more than twin 38mm SUs.
The twin SUs should be more response and smooth, if both setups are tuned correctly.  
#12
Re: Twin su or single 45mm side draft for l20b?
LOWTECH
Posted on: 2009/11/16 0:10
Unless modified, twin 38mm S.U.'s are too small for a worked over L20B. Even a single 45 Weber or 44 Mikuni would be pushing it I think. With twin 40mm mikuni's on the dyno my engine couldn't get enough fuel at the higher RPMs. For a worked L20B I would go for twin 44 Mikuni's or twin 45 Weber's. Just my two cents.....
#13
Re: Twin su or single 45mm side draft for l20b?
ddgonzal
Posted on: 2009/11/16 0:21
Twin carbs only flow a bit more than singles, so if a Single 40 is too small, Dual 40s will be too small.
Sounds like 44s or 45s are the way to go for a modified high RPM L20B.
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