Hello everybody!
I am new in the forum. I live in Sweden and have been riding bikes since the 70,s. That gives and indication of my age. Right now I have three japanese bikes. A 1972 Suzuki T500 wich I am restoring. And two Yamaha a 1983 RD350 and 2000 XJR1300.
Now to the T500. I am having trouble with setting the timing. I am doing it according to the manual with a lamp and a small battery. To get the timing marks even close I have to set the timing at max retard. I have tried with several new points and condensers but the there is no difference. Opening up the points gap more than specified alters the setting as i should, but that is just a test. Also should I have to disconnect the condensers when setting the timing? When connected the lamp never goes of.
I have also checked the position of the timing marks with a micrometer in the sparkplug hole. The left cylinder is spot on 3,4 mm before TDC. The right one has its mark 2,9 mm before TDC. Nevertheless that should not affect the timing setting in this way. One idea I have on the timing is that the points cam lobe is worn. Is it possible to measure to cam, if so how is this done?
I hope som one has som thoughts about this.
T500 timing
Moderators: oldjapanesebikes, H2RICK, diamondj, Suzsmokeyallan
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Gorgen
- Still in the Driveway
- Posts: 1
- Joined: Sun Sep 24, 2023 12:14 pm
- Country: Sweden
- Suzuki 2-Strokes: 1972 T500
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karl pa
- Yeah Man, the Interstate
- Posts: 557
- Joined: Sat Sep 05, 2015 3:14 pm
- Country: us
- Suzuki 2-Strokes: GT
- Location: southeast pa
Re: T500 timing
Welcome to the forum.
The way I set timing is, I measure piston before TDC, take note how close the marks are, then set timing using timing light roughly where the marks were.
The way I set timing is, I measure piston before TDC, take note how close the marks are, then set timing using timing light roughly where the marks were.
76 GT185
77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe
77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe
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jabcb
- Moto GP
- Posts: 4310
- Joined: Mon Dec 13, 2010 4:32 pm
- Country: USA
- Suzuki 2-Strokes: 69 T350 thru 75 GT750
- Location: southwestern Pennsylvania
Re: T500 timing
The dwell angle is roughly 180 degrees. So you can end up with one points closing as the other opens.
And the timing light is always on because the other points closes the circuit.
I use a multimeter. The resistance varies between ~ zero & the coil resistances.
The bulb brightness will vary. But depending on the bulb & battery, you may not notice the change.
And the timing light is always on because the other points closes the circuit.
I use a multimeter. The resistance varies between ~ zero & the coil resistances.
The bulb brightness will vary. But depending on the bulb & battery, you may not notice the change.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more
Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
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Cook1e
- Still in the Driveway
- Posts: 2
- Joined: Tue Jun 13, 2023 8:24 am
- Country: United Kingdom
- Suzuki 2-Strokes: T500M 1975
Re: T500 timing
Thanks, I was trying to time my T500 with a buzzer across the points and I had the issue that the buzzer was constantly on. I ended up using a multimeter in the end like you but the fact that the buzzer didn't work was confusing me and now you have explained why!
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joolstacho
- To the on ramp
- Posts: 395
- Joined: Sun Jul 13, 2014 7:55 pm
- Country: Australia
- Suzuki 2-Strokes: AS50, GS500, GT500, ex GSXR750 slabbie
- Location: Greendale Vic, Australia
- Contact:
Re: T500 timing
Nothing wrong with the ol' fag paper!
