interpol timing marks

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interpol timing marks

Post by nednortonrider » Wed Nov 21, 2018 10:05 am

Anyone know if there are any timing marks that facilitate the use of a strobe to check the timing on a running engine .

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Richard Negus
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Re: interpol timing marks

Post by Richard Negus » Wed Nov 21, 2018 9:30 pm

Sorry, there are none!
But, the vertical axis of the engine is the line between eccentric shaft and the bottom stud.
TDC is when the flywheel key is at either 9 o'clock to that line for the l/h rotor or 3 o'clock for the other.
Full advance timing, although not critical, is alleged to be at 18 BTDC, except for F1/F1 Sport fitted with a 'yellow-spot' flywheel
From that you should be able to mark your flywheel using a point on the casting as reference.
Slower slower, no faster faster - the joys of old fogey mode to hooligan mode at the flick of a switch

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