Fitting Dyna S to Z900. Installation instructions say 'use the advance timing marks which are approximately 1/2 inch to the right of the F marks'.
I dont have any marks, only the pivots of the weights at this position.
Help!!!
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Dyna S ignition - Advanced timimg marks
Moderators: KeithZ1R, chrisu, paul doran, Taffus
Maxico,
I dismantled my Z900 advance unit in order to scribe myself a line at the full advance (40 deg) mark, only to find that there is already a line on the plate behind the weights (really useful), just before the pivot pin. If you carefully remove the spring and weight you will see it but I recommend putting a blob of tippex on the edge of the plate to make it easier to see when timing with a strobe.
Andy
I dismantled my Z900 advance unit in order to scribe myself a line at the full advance (40 deg) mark, only to find that there is already a line on the plate behind the weights (really useful), just before the pivot pin. If you carefully remove the spring and weight you will see it but I recommend putting a blob of tippex on the edge of the plate to make it easier to see when timing with a strobe.
Andy
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Jeff Saunders
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- Location: Upstate NY, USA
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the z900 uses an ignition advance set for 20 degrees at idle and 40 degrees at full advance. This means the distance between TDC and the F mark is the same as from the F mark to the imaginary full advance mark (which hides behind the pivot point of the advancer weight).
Although I time the bikes to the factory marks to start with, I tend to retard the igntion a couple of degrees to help avoid pinging on older bikes (the result of crappy petrol quality and stretch on the cam chain impacting cam timing).
Although I time the bikes to the factory marks to start with, I tend to retard the igntion a couple of degrees to help avoid pinging on older bikes (the result of crappy petrol quality and stretch on the cam chain impacting cam timing).
73 Z1 (turbocharged), a 74 Z1A, and some h***a's and Suzuki's...
www.z1enterprises.com jeff@z1enterprises.com
www.z1enterprises.com jeff@z1enterprises.com
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maxico
Thank You Hack & Jeff.
Removed the weights but could not find a mark on mine.
Resorted to tracing round advance unit and marking 20 degrees from F mark with a Protractor. When the advance unit was laid back on the paper it shows the full advance mark to be very close (circa 0.5mm) within the shoulder of the pivot pin.
I've marked this point and will aim for this at the weekend.
Cheers.
Removed the weights but could not find a mark on mine.
Resorted to tracing round advance unit and marking 20 degrees from F mark with a Protractor. When the advance unit was laid back on the paper it shows the full advance mark to be very close (circa 0.5mm) within the shoulder of the pivot pin.
I've marked this point and will aim for this at the weekend.
Cheers.
Maxico,
I was doing exactly what you are doing (marking out with a protractor) when I noticed the 40 deg mark was already there, just before the pivot pin.
If you take a look at the lower example on Jeff's Dyna 'S' page http://www.z1enterprises.com/detail.aspx?ID=200 you can just see the edge of the mark behind the weight. As Jeff says, it's the same distance clockwise from the "F" mark as the "F" is from the "T" mark
Andy
I was doing exactly what you are doing (marking out with a protractor) when I noticed the 40 deg mark was already there, just before the pivot pin.
If you take a look at the lower example on Jeff's Dyna 'S' page http://www.z1enterprises.com/detail.aspx?ID=200 you can just see the edge of the mark behind the weight. As Jeff says, it's the same distance clockwise from the "F" mark as the "F" is from the "T" mark
Andy
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