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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
TT carb
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<blockquote data-quote="greg brillus" data-source="post: 142730" data-attributes="member: 597"><p>Interesting about the slide cut away...... I wasn't sure about the number verses the actual height figure........anyway tuning carb's is all about trial and error.......plus knowing which part to adjust to get the correct result.........The absolute first thing you should always do is check the float level with a home made sight/level tube with modified banjo nut........For some reason I have found setting the levels on the larger 302 type bowls is a challenge, either on petrol or methanol fuels.......hard to say why, not sure if the SG of modern fuels is different from those back in the day. There are several mods that need to be done if the level is out.......it is usually too high, thus the engine runs too rich.......For racing it is very important (and no different for a road engine really) that the engine responds cleanly to opening the throttle out of corners, the larger the engine the more important as the power on/off will upset the bike quite badly.......The correct float levels and the slide cut away affect this area directly.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 142730, member: 597"] Interesting about the slide cut away...... I wasn't sure about the number verses the actual height figure........anyway tuning carb's is all about trial and error.......plus knowing which part to adjust to get the correct result.........The absolute first thing you should always do is check the float level with a home made sight/level tube with modified banjo nut........For some reason I have found setting the levels on the larger 302 type bowls is a challenge, either on petrol or methanol fuels.......hard to say why, not sure if the SG of modern fuels is different from those back in the day. There are several mods that need to be done if the level is out.......it is usually too high, thus the engine runs too rich.......For racing it is very important (and no different for a road engine really) that the engine responds cleanly to opening the throttle out of corners, the larger the engine the more important as the power on/off will upset the bike quite badly.......The correct float levels and the slide cut away affect this area directly. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
TT carb
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