... this is another of those stupid ideas that pops into my head from
time to time ... ignore me if you start laughing too hard!

But ... could a ball-valve work as an off-the-shelf throttle for your
Holly carb setup?

See the following:
http://images1.mcmaster.com/Contents/gfx/large/2693k22p1l.png?ver=19729922

Hog a couple of pounds of excess metal off the above unit(s) and run
your intakes into it (about $70 each, however).

Might be a bit stiff to operate (at least at first)

R.Berglund

A 2 inch ID brass ball valve would have a serious effect on the CG :)


Paul Lamar


Who says it has to be brass?  Why not make it from a nice cheap PVC ball
valve.  PVC is fuel proof and it shouldn't take too much to prevent it
from getting hot enough to melt. ;-)  Just sayin!

A ball valve is not recommended for partial throttle operation.  Ball
valves are indicated for on/off operation.  Same goes for gate valves.

Mark LaPierre
Registered Linux user No #267004

I would say a gate valve is the same as a slide throttle.
Slide throttles work fine. The Le Mans winning 4 rotor had
a slide throttle.

Paul Lamar