Goofball,
Gee .. thats a big drill ...... be careful when "drilling" and
"removing" stuff. These engines are actually pretty well designed as
stockers ... big holes on either end may require major re-tuning to
realize any gain at all .. or to keep from going backwards. I would
think at this point you might need a "shim" or even more. The popping
at 4300 RPM indicates too lean a mixture as you are trying to open the
slides, (at 4300 you are just entering "mid-range"). If you simply
take the "Y" off ...... you will lose on the low end .. it will lean
the bike out even more ........ it might be good for 1 RWHP on the top
though. IMHO ...
campbell
----- Original Message -----
From: <[EMAIL PROTECTED]>
Subject: carb setting
> i drilled out the baffles in my stock exhaust 1 1/8"
> sounds great no cost should i use a shim under
> needle and take out the " Y" for more mid range
> getting some exhaust popping at 4300 rpm when
> fully hot
> snip <
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