For all you engine experts out there, I am looking at trying to improve the BHP on my Royal Enfield Bullet without doing any major modifications to the bike. So with my limited knowledge about engines, I have thought of doing the following:
1. The bullet comes with a Micab carburettor with a 28mm bore (This info is from the Hitchcocks website and I have no clue what the bore refers to!). Anyhow, I'm thinking increase the pilot, needle and main jet's sizes so more fuel pases through at the respective throttle stages.
2. Adding a free flow air filter like the K&N rc1060 pod filter to support the increased fuel flow due to the larger sized jets in the carb.
3. installing a Goldstar silencer.
A general question: how would shortening/ lengthening the header pipe effect the performance? I know its got something to do with the compression, but an explanation in layman's terms would be much appreciated.
Thanks for your time
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