Rotary Valve Specials

The Fang Honda CB500T Nervous Norvus Dragbikes Superchargers Game Links
 

THE Australian motor racing scene is well known for innovative engineering, not least in drag racing. Below is a selection of images from two friends who have been researching rotary valve engines for some years. Their latest projects are; (Gary Thomas) 2500cc in-line four and (Mark Walker) 3000cc V-twin. ALL IMAGES ARE FUL SIZE.

 
 

Left front

 

Gary's engine is the 3rd generation model, a 2500cc fuel injected four with 93mm bore and 86mm stroke. Compression is 12:1 to run on methanol with a supercharger.

All components including pistons and connecting rods have been designed and made from scratch based upon Gary and Mark's cumulative experience.

Information is a bit sparse, so just feast your eyes on a lifetimes work......

 

 
 
Right rear
  Rear
 
  Left rear
  Valve sleeve and bearing
 
  Drive to rotary valves
 
  DetailPistons
 
  Mark Walker V-Twin

Mark's monster 3 litre fuel injected rotary valve v-twin.