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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Very bad blow by - Help!
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<blockquote data-quote="Ducdude" data-source="post: 23179" data-attributes="member: 2077"><p><span style="font-size: 12px"><span style="font-family: 'Times New Roman'">Am I sure that the timed breather is not open on the up stroke and closed on the down stroke? I would not bet my life on it as I did that test 5 months ago but I followed the instruction and was able to blow though the breather when I was supposed to and was not when it was closed according to KTB and a degree wheel...</span></span></p><p><span style="font-family: 'Times New Roman'"><span style="font-size: 12px">When I built up the timing case I spent A LOT of time making sure the marks were properly lined up. I still may have mucked it up but I don’t think so at this point.</span></span></p><p></p><p><span style="font-size: 12px"><span style="font-family: 'Times New Roman'">You said a 'D' breather should go on the front exhaust valve cap, (where the spring is at the very front of the motor correct?) and it needs to have modifications to the upper valve guide and the head to let the gas pass easily...</span></span></p><p><span style="font-size: 12px"><span style="font-family: 'Times New Roman'">What type of modifications is needed on the head?? Is there any benefit at all if the breather cap is used with out making the modification?</span></span></p><p><span style="font-size: 12px"><span style="font-family: 'Times New Roman'">Thanks all,</span></span></p><p><span style="font-size: 12px"><span style="font-family: 'Times New Roman'">Eric</span></span></p></blockquote><p></p>
[QUOTE="Ducdude, post: 23179, member: 2077"] [SIZE=3][FONT=Times New Roman]Am I sure that the timed breather is not open on the up stroke and closed on the down stroke? I would not bet my life on it as I did that test 5 months ago but I followed the instruction and was able to blow though the breather when I was supposed to and was not when it was closed according to KTB and a degree wheel...[/FONT][/SIZE] [FONT=Times New Roman][SIZE=3]When I built up the timing case I spent A LOT of time making sure the marks were properly lined up. I still may have mucked it up but I don’t think so at this point.[/SIZE][/FONT] [SIZE=3][FONT=Times New Roman]You said a 'D' breather should go on the front exhaust valve cap, (where the spring is at the very front of the motor correct?) and it needs to have modifications to the upper valve guide and the head to let the gas pass easily...[/FONT][/SIZE] [SIZE=3][FONT=Times New Roman]What type of modifications is needed on the head?? Is there any benefit at all if the breather cap is used with out making the modification?[/FONT][/SIZE] [SIZE=3][FONT=Times New Roman]Thanks all,[/FONT][/SIZE] [SIZE=3][FONT=Times New Roman]Eric[/FONT][/SIZE] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Very bad blow by - Help!
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