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megawatt

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Posts posted by megawatt

  1. The main jet mainly controls fuelling at top end throttle openings, typically above 6000rpm, though it does affect mid range as well. Lifting the needles will richen the mixture above 3000rpm. Pilot jets control tickover and up to 3000rom as well as airscrews. They all affect each other at the overlap phase.

  2. If you fit higher lift cams, you need to check the valve to piston clearance. The cam duration also affects this as minimum clearance is not necessarily at top dead Centre. Adjustable cam sprockets allow the cam timing to be varied to increase power and maintain clearances.

  3. Whatever you put on the ground, the shed floor needs to have an air gap under it. I did this with adjustable plastic stands, between two and three inches high. The bottom of the stand can sit on slabs or gravel, the top touches the underside of the wooden floor or its bracing beams.

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