SOHC.co.uk Forums > CB750

What are these plugs telling me?… and other questions!

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Trigger:
Steel  ;) stainless and brass is too soft for the job  ;)

Matt_Harrington:
Er, do you mean stainless steel? or mild steel?  ???

Trigger:
They are carbon steel. On my packet the grade is 12L14.  ;)

Matt_Harrington:
Ah, low carbon steel - thanks

Trigger:
The ones you use for spark plugs are copper plated to seal better on the spark plug. If you need a taper seat insert it comes with a sliver plate  ;)

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