SOHC.co.uk Forums > CB350/400

Testing a Boyer Bransden system

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royhall:
Had a reply back from Boyer Bransden on this issue, that may be of interest to anyone using a Boyer Bransden system......... The total resistance on each plug lead must be no more than 5000ohms............ That means if you have the plug caps with built in 5k resister a non resister spark plug MUST be used. As the standard plugs sold by DS are NGK DR8ES-L these will be no good as they also have an internal resister of 5000ohms. The correct plug would be D8EA..............No wonder I have a dim spark as the total resistance is running at 10,000ohms way outside the specification for Boyer Bransden Micro Digital systems............Will report back when the new plugs arrive and I get a weather break to give the bike a test run........Thanks for all the replies. 8)  

ka-ja:
D8EA's were recommended for my 400/4 by a main Honda agents in 1985 when I fitted my first BB system

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