SOHC.co.uk Forums > CB350/400
Strobe
Seamus:
Bought an accuspark (with adjustable advance) to time my MG. The Suzuki 350 was timed using a dti as the timing marks are notoriously innaccurate. 500 four , came all set up, but will check the timing with my strobe. Electronic ignition fitted to that though.
Recommend the strobe for what it is worth though
Erny:
Strobe is great tool for fine tuning, but you need to have one that works with your sohc..
I bouth this one https://www.ebay.co.uk/itm/111945334787
It works on idle and up to 1500rpm than light does not flash and it does not show rpms.. Even in separate battery... Not issue with unit, I get new one from seller as replacement. The same bahaviour.
But works fine on my old car even with higher rpms
My procedure:
1. Manual adjustment (with bulb or led)
2. Using dwell meter fine tune gaps to be the same for both points
3. Fine tune by strobe
4. Recheck dwell
5. Recheck timing with strobe
Repeate in loop 4-5 until is ok. Takes time but pays off but great idle and smooth run!
Rob62:
That accuspark looks ok and I certainly dont want to be spending much more than forty quid...I was looking at this one
https://www.machinemart.co.uk/p/gunson-g4113-timestrobe-xenon-timing-light/
TrickyMicky:
Y'know, if like me you're really brave, (or bloody stupid!!), you could try the following:- remove plugs so engine is easy to turn over, insert cigarette paper in between points, pull on paper until it feels like it's about to tear, then VERY slowly turn engine over whilst watching timing marks until you feel a slight release of grip on the paper which signifies the moment the points are just starting to open, and that's the point at which to set the 'F' mark. Not very scientific I know, but I've got away with using this method from 1967 on Hondas ranging from 90cc to 750cc, and I've got away with it so far!
Erny:
--- Quote from: TrickyMicky on March 28, 2020, 07:07:52 PM ---Y'know, if like me you're really brave, (or bloody stupid!!), you could try the following:- remove plugs so engine is easy to turn over, insert cigarette paper in between points, pull on paper until it feels like it's about to tear, then VERY slowly turn engine over whilst watching timing marks until you feel a slight release of grip on the paper which signifies the moment the points are just starting to open, and that's the point at which to set the 'F' mark. Not very scientific I know, but I've got away with using this method from 1967 on Hondas ranging from 90cc to 750cc, and I've got away with it so far!
--- End quote ---
this is legacy method I used on all 2-stroke jawa's in 80's (those powered by generator only, thus no battery available). I had only one problem that time (woould have even now) - I'm not smoking, so I have no cigarette papper, even no lighter! ::)
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