When I built this engine back in 1995, I went to the 1196 (74.5mm) Wiseco kit. I had the head rebuilt professionally, which included porting and flowing and had the cams ground by a bloke in QLD who does race cars. I used the original Carbs with a K&N stage 2 kit, which loosely means bigger jets. Exhaust is standard and original and the air box is retained using a K&N filter. Overall I was happy with the build. High compression made starting harder and had to use a battery with more cranking power. I don't know if other folk have had this problem. I have since rebuilt engines on some of my other XS11s and used the standard pistons (71.5mm) not near as much oomph but I don't need speed anymore. These engines cruise easily above the speed limit without ripping your arms off (1196 kit). Some folk replace the carbs with the Mikuni BS36 from an FJ1200, with a couple using Flat Slides, (see basket case on YouTube).but again the Stock BS34 are more than enough (for me).
