SOHC.co.uk Forums > CB350/400

Setting Ignition Timing With a Strobe Light

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Bryanj:
I did the training in the 70's and was told to set the gap with feelers, the timing static with a bulb and then check the advancer with a strobe BUT you had to be good with feelers to get the gap right (and have a set with a 14thou one!) have patience and practice to get gap and timing right at the same time and to be honest unless a problem was reported by the customer rarely bothered to use a strobe as it took too long to set up the Honda box!--likewise the dwell box

i always found that the advancer started opening very early so using a strobe set the timing advanced but still in the marks on full advance.

You have to remember I was apprenticed in 69 and brought up on old Fords to the extent that i proved to an apprentice in the 80's who tried to tell me it was impossible to set points and timing without a dwell box and a strobe that i could do an essex v6 (capri 3.0) in half the time it took him and get better results.

A dwell box and strobe may well be easier for someone who does not do the job often but seems like witchcraft to this old timer mate

Piki:
I have the "Honda Box" and 10 Minute is enought for a Perfect Tune-up.

fisjon:
I used to find that my CB750 K1 was a bugger to time up.

The only way I could get the ignition timing spot on was to set different points gap !

I even bought several point sets but to no avail, they always had to be set different.

I found out later that the gap is not as important as the dwell and if you did not get the timing right the pipes would go blue very quick.

I have a dwell meter and a strobe with a power source and after setting/checking the gap I alter it to get the correct dwell then adjust the timing regardless of the gap. If the dwell is correct you will always get a fatter spark.

Dwell more important than gap! But if you fit Boyer electronic you would think you were riding a more powerful bike.

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