<VV> Early Rochester B/BC/BV Question - No Corvair

[Bill Meglen]

Interesting post.  In addition to my obsession with Corvairs I am interested
in inline 6's and as such a member of a local chapter of International
Inliners. I have floated the question to several members who race inline
engines.  Have you considered posting the question on the bulletin boards at
<inliner.org>.  As to no Corvair content let me add some that also
rationalizes my eclectic (?) Chevrolet interests.  Until his death Wayne
Hornung the creator of the 12 port head was an honorary member of our
chapter. He was deservedly revered by "Inliners". One of his other creations
was a Corvair powered boat (I believe Matt has one on his web site).  My
fellow Inliners seem to tolerate my Rampsides presents at Inliner events not
because of his involvement but because the think it is often running on 3
inline cylinders! <grin>

Bill
Gardnerville, NV



On 2/13/09 17:45, "Grant Young" <gyoungwolf at earthlink.net> wrote:

> Hoping someone might be familiar with some early Rochester B series carbs that
> were on 50's and early 6 cylinder GM engines. I am rebuilding one for a
> customer off his '57 Chevy and noticed that there are some extra holes drilled
> in the cast iron throttle body that were not part of the original casting. In
> this particular carb, there are 5 of them about 1/16" drilled next to each
> other, apparently from the outside through a hole for a vacuum connection
> brass fitting. They are just above the throttle plate when closed, similar to
> the location of the ported vacuum slot in our H/HV carbs (so I assume that
> might be their purpose). I checked several other carbs I have of the same
> vintage, some used and three NOS ones. All but one (a used one) have the
> holes, but the number varied in size and from one large to 3 small ones. None
> are neat and aligned enough to be "factory." I am certain the ones in the
> customer's carb were drilled from the outside by hand because the person who
> dril
>  led them was not careful enough and hit the throttle plate on 4 of them. Does
> anyone know of an early TB or old mechanic's tale that might have resulted in
> this? Thanks,
> Grant
>