Ignition setup

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bosco659
Posts: 21
Joined: Mon Aug 09, 2021 4:33 am

Ignition setup

Post by bosco659 »

Newbie here…. On a GT750M with points, can timing and points gap be set with a timing light and dwell meter? If they can, what are the dwell specs for the points? Thanks
1976 Yamaha XS650C, 1975 Suzuki GT750M
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Alan H
Posts: 12104
Joined: Fri Aug 05, 2011 6:38 am
Location: Wombwell, Republic of South Yorkshire

Re: Ignition setup

Post by Alan H »

Just set with a timing light or ohm meter. There's no advance/retard, so dwell is determined by the points cam alone and can't be changed.
Proof that four strokes are over complicated
bosco659
Posts: 21
Joined: Mon Aug 09, 2021 4:33 am

Re: Ignition setup

Post by bosco659 »

Thanks Alan. I’m just accustomed to setting point gap on my 4 stroke bike with a dwell meter after an initial setting with feeler gauges. I’m also strongly considering the installation of an electronic ignition on the bike this summer.

Another question. What’s the best way to sync the carbs? I have a manometer set. Wasn’t sure about vacuum ports on the bike (haven’t picked it up yet)..
1976 Yamaha XS650C, 1975 Suzuki GT750M
User avatar
Alan H
Posts: 12104
Joined: Fri Aug 05, 2011 6:38 am
Location: Wombwell, Republic of South Yorkshire

Re: Ignition setup

Post by Alan H »

Try it first and if there's a problem, send 'em to Baz on here and he'll sort them. He's done a few sets for my Hippo and 550s and he's all geared up for them.
I've had several 550s and a Hippo and all ran fine on points. The choice is yours of course, but if electronics break, you're shoving it. All 3 points should never fail at the same time.
Proof that four strokes are over complicated
bosco659
Posts: 21
Joined: Mon Aug 09, 2021 4:33 am

Re: Ignition setup

Post by bosco659 »

Thanks Alan.
1976 Yamaha XS650C, 1975 Suzuki GT750M
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