Daniel asks:
> Could you have a car
> that had good off idle performance good midrange and good top end??
Yeah - install fuel injection. And add variable valve timing :-)
IN GENERAL, the SU's are more for the street and the Solexes are
more for the track. On the street, you need lower-end power, on the
track you need higher-end power. IN GENERAL.
Looking at the Nissan performance curves, it's interesting to note that
the SU setup outperforms the solex setup below 4000 RPM. They're
equal at 4000, and then the solexes gain the advantage above 4000.
Whenever discussing carburetion, remember that more is NOT better.
If you tried fitting 4 SU's, you want each one to be SMALLER than
what's on there now. Perhaps not quite half the current size, but down
there somewhere. Hmmm, a quad of R (1.5") su's?
Also, as an interesting pondering point, the SU's are only working
half the time. And a solex only works a QUARTER of the time. If you
could get an ideal intake manifold, simplistic logic says that a SINGLE
carb will work fine, as there is only one cylinder pulling at any moment...
The problem, it seems, is in getting the intake to provide an equidistant
path from the carb to each cylinder...
-- John
John F Sandhoff sandhoff@csus.edu Sacramento, CA
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