NGK Spark Plugs

[Guest]

This might sound like a stupid question, but I'm trying to replace the spark plugs on my 79 GS850GN. The old ones have a threaded pin, but the new ones - the same model NGK B8ES - have a solid pin. I can't find the old ones anywhere. Can someone tell me which plugs will fit a '79 bike? Thanks!

[Steve]

Unscrew your "solid pin", you will have what you need.

.

[fbody_mike]

There is a version of NGK B8ES that has a solid cap that doesn't not screw on. You may get those when you get the plugs at a auto part store. I guess some cars use that plug.

[jabcb]

Make sure you get the plugs with the correct item number.
NGK B8ES, item # 3683, have the solid terminal.
NGK B8ES, item # 2411, have the screw on terminal.


The NGK plug name (B8ES, etc) is not a complete descriptor. The item # is unique. Tell the auto parts staff you need “NGK 2411 B8ES” and you will get the correct plug.

https://www.ngk.com/search.aspx?ptn=Spark+Plug&data=13%3a14mm%7c16%3aGasket%7c29%3aNo%7c15%3a19mm+(3%2f4%22)%7c18%3a8&s=1#results

[GRAND ROUGE]

Just checked my 'stock' of NGK B8ES. Wow...never knew..... Anyway....screw terminal. No fatter pin in box. Item # 2120

[jabcb]

Just checked my 'stock' of NGK B8ES. Wow...never knew..... Anyway....screw terminal. No fatter pin in box. Item # 2120

NGK 2120 should be a D8EA plug. What bike uses that plug?

https://www.ngk.com/product.aspx?zpid=9696

[Skinner]

NGK 2120 should be a D8EA plug. What bike uses that plug?
https://www.ngk.com/product.aspx?zpid=9696

My 1982 Katana 750 takes the D8EA, as did my 1981 GS650GL.

[GRAND ROUGE]

NGK 2120 should be a D8EA plug. What bike uses that plug?
https://www.ngk.com/product.aspx?zpid=9696

jabcb...My bad.....D8EA.....old box.....D looked enough like a B..the A....sloppy me.

[mascottjd]

There is a version of NGK B8ES that has a solid cap that doesn't not screw on. You may get those when you get the plugs at a auto part store. I guess some cars use that plug.

That's exactly what happened - they sent me the solid plug, and are sending out the screw on instead. Thanks!

[mascottjd]

Unscrew your "solid pin", you will have what you need.

.

Thanks - got it!

[mascottjd]

Just checked my 'stock' of NGK B8ES. Wow...never knew..... Anyway....screw terminal. No fatter pin in box. Item # 2120

Thank you Sir!

[mascottjd]

Make sure you get the plugs with the correct item number.
NGK B8ES, item # 3683, have the solid terminal.
NGK B8ES, item # 2411, have the screw on terminal.


The NGK plug name (B8ES, etc) is not a complete descriptor. The item # is unique. Tell the auto parts staff you need “NGK 2411 B8ES” and you will get the correct plug.



https://www.ngk.com/search.aspx?ptn=...a8&s=1#results

Thanks for your help!

[standswithabeer]

resistance on my 1/4 coil measures 11.67K, while the right coil measures 12.40K. spark plug caps are original, and found one that was open and one with an intermittent reading so they will all be replaced. should i use resistor plugs DR8EA with my new NGK 5 ohm caps? bike has Dyna S ignition. tia,
bob p

1979 GS750L

[kingofvenus]

You only need resistors in either the caps, or the plugs. Both is overkill.

[standswithabeer]

very good, many thx!
bob p