It is 5-40. Chuck S BBRT ----- Original Message ----- From: "Bob Gilbert" <traceya at montrose.net> To: <virtualVairs at corvair.org> Sent: Tuesday, May 20, 2008 9:24 PM Subject: <VV> choke rod > Howdy Folks, > > I need to clean out the threads in the choke coil. I have a 4-40 tap that > is too small but it may be a 6-40. Does any one know? > > Bob