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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