Cylinder Head Porting, Antique and Hi-Performance American Motorcycles

TORQUE PORT on PANHEAD  Includes installation of oversize (1.94) intake valves and high performance stock diameter exhaust valves, new guides set up with seals, and a set of high performance valve springs (parts included in price).  Also includes installation of oversize intake valve seat inserts as needed.  Full porting with intake runners finished to 50 grit and exhaust runners to 120 grit.  Combustion chambers remain untouched with the exception of unshrouding of the valves. Intakes get a 5 angle seat for good wet flow characteristics, and a radius exhaust seat for maximum scavenging. $989

BIG VALVE PORTING on KNUCKLEHEAD  Includes installation of  2.060" intake valves (stock is 1.750) and high performance stock diameter exhaust valves, new guides set up with seals, high performance valve springs and new intake spigots (parts included in price).  Also includes installation of exhaust valve seat inserts as needed.  Full porting with intake runners finished to 50 grit and exhaust runners to 120 grit.  Combustion chambers are fully polished. Intakes get a 5 angle seat for good wet flow characteristics, and a radius exhaust seat for maximum scavenging. $1295

TORQUE PORT on KNUCKLEHEAD  Includes installation of  1.94 or 2.0" intake valves (stock is 1.750) and high performance stock diameter exhaust valves, new guides set up with seals, high performance valve springs and new intake spigots (parts included in price).  Also includes installation of  valve seat inserts as needed.  Full porting with intake runners finished to 50 grit and exhaust runners to 120 grit.  Combustion chambers remain untouched with the exception of unshrouding of the valves.  Intakes get a 5 angle seat for good wet flow characteristics, and a radius exhaust seat for maximum scavenging.  $1095