Thread: spark plugs
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Old 07-18-2014, 04:23 PM
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Thumbs up Re: spark plugs

Originally Posted by tinnes2 View Post
I purchased a new NGK spark plug yesterday and the thread portion is longer than the original pretty sure I can't use this or it will hit the top of the cylinder head am I using the wrong plug number I got the number off of one of the performance parts threads it's an NGK B 7 HS the original was a champion J8C
The Chinese spark plugs that come in the kits have too short of a threaded portion.
The NGK B7HS is the right length.

You could also use a NGK BP7HS which has an extended tip and it
won't hit your piston.

Last edited by MotorBicycleRacing; 07-18-2014 at 10:08 PM.
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