Ray asked:
>If the collective net wisdom (I like the concept of net
>wisdom--you add up the good opinions and the bad ones, to get the net
>wisdom--but I digress) is that the carbs were improperly rebuilt, and I
>have to start over, I am tempted to have the larger set rebuilt for a
>performance gain. The question is, would there really be a significant
>gain? If I am not mistaken, the original carbs are 1-1/8 inch, and the
>other set is 1-1/4 inch from a later Spridget.
[Only a partial answer...]
Going from 1.125" to 1.25" is a gain of nearly 25% in throttle area, which
is certainly nothing to sniff at. However, unless the rest of the engine
is ready for the better breathing (yours does sound like a good setup) you
won't necessarily gain, and you could lose performance. For example, if
you went to a REALLY large throat, you would reduce the air velocity to
almost nothing, and would lose the venturi effectiveness. Now if you
weren't worried about originality, a 1275 would look real good under the
bonnet...
I'm not sure I'm the best one to comment on rebuild quality; I currently
have a real problem with my rear carb. It's turned about 12 flats richer
than the front. Yes, I have carefully balanced, checked the pistons, etc.
but suspect a shaft bushing problem or a clogged jet. Maybe I'll get to it
this weekend...
sf
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Wireless Communication Technologies 1951 MGTD
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