so i tore my barry grant carb apart...

[Jerry Clayton]

I've modified/blueprinted hundreds of holley type carbs for some big cam engines and generally around .105- .110 will get the idle to around 850 with the butterflies adjusted to where the transfer slots are the little perfect squars---Sometimes I take a .025 drill and reverse broack a little exact hole there with the plates just lightly snugged closed---will need about 1 1/4 turns on idle air screws

[vector1]

Originally Posted by Jerry Clayton

I've modified/blueprinted hundreds of holley type carbs for some big cam engines and generally around .105- .110 will get the idle to around 850 with the butterflies adjusted to where the transfer slots are the little perfect squars---Sometimes I take a .025 drill and reverse broack a little exact hole there with the plates just lightly snugged closed---will need about 1 1/4 turns on idle air screws

thanks for the info, i was thinking it would be easy to do to some other carbs as you described.

""Sometimes I take a .025 drill and reverse broack a little exact hole there with the plates just lightly snugged closed""

Jerry, could you describe this, i don't follow.