Gaz22
New member
Can anyone with a VP 2001 engine comment on back pressure from the engine, this one has just had a top overhaul reground valves etc, the rocker box and joint are aligined correctly to allow the engine to breathe normally but it now seems to have more back pressure than before.
Can anyone comment on this or tell me how to somehow measure the back pressure /forums/images/graemlins/confused.gif
Can anyone comment on this or tell me how to somehow measure the back pressure /forums/images/graemlins/confused.gif