CR9EKB?

[Ruggybuggy]

Can anyone tell me the difference between the NGK CR9EKB and the CR9EK? What does the "B" stand for? I have a new set of the CR9EK for my Yamaha FZ1 and physically they look identical.

 

[Jeffz]

NGK Website says Special Design for the firing end. Must be the 4 electrodes on it.

 

[yamahas]

I have read before that it has to do with the part that the coil plugs into, but I am not 100% sure.

 

[Ruggybuggy]

Both plugs have dual electrodes and they look exactly the same. My local supplier wants $11.50 a plug and I sure wouldn't mind using the FZ1's plugs, I have four of them!

 

[Ruggybuggy]

I have read before that it has to do with the part that the coil plugs into, but I am not 100% sure.

You get the hero cookie! Did some more research and your right. The difference is on the end of the plug that fits into the coil. One has a screw on cap and the other is one piece.

 

[cannondale27]

The B stands for Solid Top. Use the B or you will end up with the little screw on ends coming loose.

 

[Ruggybuggy]

I was thinking of red loctite.

 

[stingray719]

The B stands for Solid Top. Use the B or you will end up with the little screw on ends coming loose.

Screw top - Wire cutters crimp cap = done!

 

[stingray719]

I was thinking of red loctite.

loctite would interfere with connection, just crimp the cap with wire cutters like you would do an electrical connection I have done that for decades.

 

[Ruggybuggy]

Good idea, thanks!

 

[yamahas]

You can't do that with these. The coil itself goes over the spark plug and it is rigid.

 

[Psycho Dave]

You crimp the cap that you screw on the spark plug before you screw it on, it will be hard to screw it on but it will not unwind itself.

 

[cannondale27]

I would just by the correct plug. Just me though.

 

[Ruggybuggy]

Here's a question. If it's the same plug accept for the end cap that is removable. The FZ1 is uses the same coil on plug design and has never had a end cap unscrew, why would it on the phazer? Why won't Yamaha just use the "B" plug on the FZ1?