due to another thread i now want an answer to this guys,as i am getting a heavily tuned bike set up using the good old arse dyno 1st,and its got engine rubbers that have got 94 embossed on the top and on the inside lip that meets the head its got 2 small bits scooped out,so are these more restrictive than the older ones?
i have got more of the older rubbers i can fit since i am after getting as much bhp out of this lump as possible on a rolling road when i am happy with my road dynoing so i can sell the engine with good figures.last thing i want to do is lose some available power without even trying!!