Speed,Combat,Scale,Racing > Combat

Nelson Plug Size

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Roy Johnson:
Can anybody tell me if the Nelson glow plugs are the standard glow plug thread size? In pictures I've seen they appear to be larger diameter.

BillLee:
Yes, larger diameter than a standard glow plug.

Paul Smith:
Yes.  They are of a bigger diameter.

Also, they do not bottom out against a plug washer, but rather use a cone at the bottom of the plug that seals against a cone-shape in the head. 

This design has become the new standard of most high performance engines.  The current crop of plugs requires a 10 mm hex wrench.

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