Unofficial Royal Enfield Community Forum
Royal Enfield Motorcycles => Bullet Iron Barrel => Topic started by: bill on November 05, 2007, 09:48:56 pm
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Does anyone have detailed info on converting the bullet 65 to dual ignition & sparkplugs
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Why would you want to?
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Saw the topic somewhere, must have been on another forum. Think they mentioned increased torque & the 2nd plug mounted where the decompression valve is.
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I'm with Krodaddy. An unneeded complication in my book. The difference in flame front on this engine probably couldn't be noticed. The stock compression ratio is 6 to 1. The nice hemi head design, even on the Classic engine, is well engineered for it's time.
Not many dual plug hemi head racing engines for cars either.
Dual ignitions are standard in aircraft engines for redundancy and safety in the first place.
Regards, Foggy
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I wonder if dual plugs would result in reduced emissions and better fuel economy? I understand that to be the case with 2005 and later BMW F bikes and 2007 and later Suzuki V-STROM 650s. But those are fuel injected and liquid cooled.
Jeff
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There's been quite a bit of discussion on this subject in the UK forums recently. My own view is that any benefit would be tiny.
Tom
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I put two spark plugs on my bike.
One in the factory location and the other is mounted in its cardboard box inside the left hand storage box with my spare bulbs. Oops, there I go being a smart ar$$e. Sorry I couldn't resist.
Seriously though, rather than mounting two plugs and ignitions why not buy a MSD module.
Check out this link: http://www.msdpowersports.com/mc-3.html
You would get the same result with less creative engineering having to be done. They sell one for single piston engines and a fair amount of competitive motocross riders use these types of devices on their bikes. If your not familiar with MSD what it basically does is causes several sparks instead of one spark each time your ignition fires. I had one of these on my '78 Camaro back in the day when I used to race at the 1/4 mile track. It worked great but only added a very modest difference in performance mainly it looked cool and gave me one more thing to adjust in the pit.
Aloha
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If I am not mistaken the Power Arc ignition as sold by us at:
http://www.royalenfieldusa.com/power-electronic-ignition-p-7013.html
Can be quite easily set up to run a two plug system. Tait in our office knows for sure.