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Vincent Comet Timing
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<blockquote data-quote="alscomet" data-source="post: 5933" data-attributes="member: 260"><p><strong>comet timing</strong></p><p></p><p>what i would do is</p><p>1,make a top dead centre stop out of a used sparkplug and 1/4" rod so that</p><p> TDC can be accurately fixed.</p><p>2,fix all your pulleys as detailed in Richardsons book p107 leaving the half time pulley out</p><p>3, put a dial gauge onto inlet valve and zero</p><p>4, turn your engine back beyond44deg btdc and then forward to 44deg BTDC</p><p>5, at this point inlet valve should be just opening </p><p>6, Install your half time pinion with a temp key that you can get out easy</p><p> using its original mark which should be ok</p><p>7, turn the engine and see at what degrees the inlet is opening but doent keep turning over and over just the once.</p><p>8 if its not opening at the correct time turn back and adjust the position of the half time pinion until it opens correctly. </p><p>9 then check the rest of the readings to see if the valves are doing what they should.</p><p>Thats how i would do it but i am open to suggestions.al</p></blockquote><p></p>
[QUOTE="alscomet, post: 5933, member: 260"] [b]comet timing[/b] what i would do is 1,make a top dead centre stop out of a used sparkplug and 1/4" rod so that TDC can be accurately fixed. 2,fix all your pulleys as detailed in Richardsons book p107 leaving the half time pulley out 3, put a dial gauge onto inlet valve and zero 4, turn your engine back beyond44deg btdc and then forward to 44deg BTDC 5, at this point inlet valve should be just opening 6, Install your half time pinion with a temp key that you can get out easy using its original mark which should be ok 7, turn the engine and see at what degrees the inlet is opening but doent keep turning over and over just the once. 8 if its not opening at the correct time turn back and adjust the position of the half time pinion until it opens correctly. 9 then check the rest of the readings to see if the valves are doing what they should. Thats how i would do it but i am open to suggestions.al [/QUOTE]
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