gorbys Posted September 8, 2021 Posted September 8, 2021 Can I swap the points ignition from my gs750 over to my gsx1100 motor as a temporary solution untill I can get a hold of either the stock ignitor or a dyna s or something?? I'm at the point now where the only thing keeping me from starting my gsx1100 swapped gs750 is the ignitor I never thought about until I couldn't get spark today 1 Quote
TonyC Posted September 9, 2021 Posted September 9, 2021 I think it will work! I fitted the Piranha optical set-up that was on my GS750 to my GSX1100 motor and it worked fine. (the Piranha uses the original back plate and the mechanical advance) I now have a Dyna S ignition (which doesn't need the ignitor), still with the GS750 backplate. Regards, Tony Quote
gorbys Posted September 9, 2021 Author Posted September 9, 2021 Bolted straight in! Happy days! Here's a video of it's first start up: https://www.instagram.com/p/CTmwRfLlSQz/?utm_medium=copy_link I am so happy now, this definately gave me som fresh motivation 2 Quote
Poldark Posted September 10, 2021 Posted September 10, 2021 Just remember to match the appropriate ignition coils to the breaker points; 4 or 5 ohms. Electronic ignition systems are normally 2 or 3 ohm. Running points with the lower resistance coils will work fine for a short while, then break down and leave you stranded; been there. 1 Quote
gorbys Posted September 10, 2021 Author Posted September 10, 2021 3 hours ago, Poldark said: Just remember to match the appropriate ignition coils to the breaker points; 4 or 5 ohms. Electronic ignition systems are normally 2 or 3 ohm. Running points with the lower resistance coils will work fine for a short while, then break down and leave you stranded; been there. Good point. Didn't think of that. Lucky I'm still using the old coils then Quote
Rijko Posted September 10, 2021 Posted September 10, 2021 (edited) 6 hours ago, Poldark said: Just remember to match the appropriate ignition coils to the breaker points; 4 or 5 ohms. Electronic ignition systems are normally 2 or 3 ohm. Running points with the lower resistance coils will work fine for a short while, then break down and leave you stranded; been there. 3 Ohm coils are fine to use with contact points. The green 3 Ohm Dyna coils for instance have been in use for many years with points, replacing the higher resistance OEM coils. Note : Dyna recommends a ballast resistor when using them with points and they do get warm. But many people have used them without the resistor for many years (including me) The 3 Ohm mini coils get real hot : those will fail especially when not cooled. Edited September 10, 2021 by Rijko 1 Quote
Poldark Posted September 11, 2021 Posted September 11, 2021 The Dyna coils are likely more heat resistant than the stock ones. With old stock coils, best to use the correct resistance; no matter internal or external. Dyna makes the black 5 ohm coils for use with points, why not just use them or an external resistor as recommended? What's the advantage to running with over -heated coils? Quote
Rijko Posted September 12, 2021 Posted September 12, 2021 20 hours ago, Poldark said: The Dyna coils are likely more heat resistant than the stock ones. With old stock coils, best to use the correct resistance; no matter internal or external. Dyna makes the black 5 ohm coils for use with points, why not just use them or an external resistor as recommended? No argument there buddy. Just offering experience. 20 hours ago, Poldark said: What's the advantage to running with over -heated coils? Um, you don't expect an answer to a retorical question i hope Quote
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