ok this is the problem going up through the gears no problem coming down 4 ok 3 ok 2 i get a knocking noise when the engine is under load and the same in 1 wot can it be please help

 

ps there is vibration as well

 

bttt

 

Is the vibration through the accelerator pedal? Could be the clutch slipping/juddering?

 

Take a good look at how close the center exhaust pipe is to the prop shaft middle support.
The re can be far too little, and when the engine twists on it's mounts under accelleration/decelleration the two can touch with a knocking/vibration also.
Worth a look?

(it happened to me, and the gap was just 5mm with engine off)
Graham