Quote:
Originally Posted by gixxer_junkie_m
They both are cpr type ,that is center electrode is protruding ,so obviously they are hotter and will self clean up properly.But what i am interested is in how the hesitation was taken care of? any ideas? because my bike is experiencing some jerking at higher revvs .I changed the adapter and it took care of it .But it keeps coming and going .Kindly give the number of the NGK plug shown in the pic.Is it a CR type? and which model is it used for?
I have tried the twin electrode of the rtr ,the bosch one and found it very hot for my bike and reverted back to NGK R CR7E IX.My bike is a 195cc fiero.I have tried NGK R CR8E AND NGK R CR9E too but found that the engine performs better with the stock plug that is NGK R CR7E and the iridium equivalent IX .
ps: engine is a high compression one now.
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Since you had increased the compression ratio the stock plug itself is running hot now.CR8E is the way to go.Higher compression and higher RPM will tend to blow the spark away much like our blowing of candle. Try non resistor type and please check whether your HT coil to Plug cap connecting cable shows resistance.If so then try non resistor type.At High RPM the spark event is taking place at a significantly higher speeds and any resistance in serious with the HT will bring down performance. Hope this helps.
