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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Egli 500 Special
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<blockquote data-quote="davidd" data-source="post: 96660" data-attributes="member: 1177"><p>Ben,</p><p></p><p>Lovely bike!</p><p></p><p>Do not bother with a PCV valve. If you want to race do a leak down test and find out where the problem is. This most likely means new rings and lapping in the valves and seats at a minimum. It might mean a new piston. With good clearances you will not have oil going up the breather and that problem will be solved. You just can't race with that amount of blow by.</p><p></p><p>It is possible that the BTH is fixed ignition. It seems unlikely with the kicker, but I have the twin plug and use a fixed ignition.</p><p></p><p>I think Bill may be right on the Dellorto. The pumpers are often hard to start because the squit puts the fire out. 34 mm is quite small for a 600 cc.</p><p></p><p>Your engine sprocket looks big. I use a 36T engine sprocket with my Newby for road racing. (The number should be stamped on it.) You also need to take a stab at finding out what ratios your gearbox has so you can decide what gearing you need to run at various events.</p><p></p><p>Do you plan to race with an organization? It is important because you have to figure out what rules to live by.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 96660, member: 1177"] Ben, Lovely bike! Do not bother with a PCV valve. If you want to race do a leak down test and find out where the problem is. This most likely means new rings and lapping in the valves and seats at a minimum. It might mean a new piston. With good clearances you will not have oil going up the breather and that problem will be solved. You just can't race with that amount of blow by. It is possible that the BTH is fixed ignition. It seems unlikely with the kicker, but I have the twin plug and use a fixed ignition. I think Bill may be right on the Dellorto. The pumpers are often hard to start because the squit puts the fire out. 34 mm is quite small for a 600 cc. Your engine sprocket looks big. I use a 36T engine sprocket with my Newby for road racing. (The number should be stamped on it.) You also need to take a stab at finding out what ratios your gearbox has so you can decide what gearing you need to run at various events. Do you plan to race with an organization? It is important because you have to figure out what rules to live by. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Egli 500 Special
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