Twin spark 535cc

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Twin spark 535cc

Postby Henry V111 » Thu Jun 15, 2017 4:13 pm

I have now converted my faithful Enfield to twin spark. Electronic ignition has been used for a long time, now fitted a dual output micro coil , Removed decompressor, blanked off the vent hole into the exhaust port, and fitted a special plug , kicked her alive again

definately better running on tick over, remove one lead and the difference can be heard, all we need now is a decent run to try it out.

plug on the wrong side.jpg
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plug on wrong side 2.jpg
plug on wrong side 2.jpg (69.69 KiB) Viewed 415 times
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Henry V111
 
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Re: Twin spark 535cc

Postby adrian » Sat Jun 17, 2017 8:17 pm

What compression piston are you using, Henry?

A.
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Re: Twin spark 535cc

Postby Steve E » Fri Jun 23, 2017 10:54 am

Great mod!

Did you use different size plugs??
As Bill once told me -"Ride it like you stole it!"
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Re: Twin spark 535cc

Postby Henry V111 » Tue Oct 10, 2017 8:39 am

Fitted a 14mm long reach but with the small hexagon, then made a brass spacer so the plug can be undone with a plug spanner, this saves any machining of cylinder head, and if desired the plug can be removed and the decompressor valve refitted.
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Re: Twin spark 535cc

Postby Steve E » Thu Oct 26, 2017 10:15 am

Have you put it on the Dyno yet???

Would be interesting to see the different power curves!
As Bill once told me -"Ride it like you stole it!"
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