Originally posted by Thunder racer
Hey all iv never modded any engines in my life and was just wondering What you are talking about when you say 200,220,230 degrees. how are you working out the Degrees and the degrees of What?
Can you plz let me know. Becasue i got no idea.
Thanks
When modifying the engines we bolt a 360deg protractor onto the engine to get a reference. The figures stated are numbers relating to when the ports open and close and how long they stay open as in regards to a full turn of the protractor from the piston being at either the Top Dead Center or Bottom Dead Center.