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Author Topic:   NGK PLUGS?
posted August 26, 2004 08:08 PM
What is a cold ngk plug small type. What about a ur5 is that middle hot or cold? Thanks, Craig Moore

posted August 26, 2004 08:44 PM
Our engine builder has us running the NGK V-Power Racing plug. I can't remember the stock number, be we are running the 10s, which he says is a cold plug.

I'll get the stock number tomorrow morning if nobody has replied yet.

posted August 27, 2004 09:21 AM
B9ES is the starting point for methanol, B8ES is for gas. thats the standard plug size threads , etc. the numbering is the same regardless of which thread it is hex size tip style, higher number, colder plug. Brodix recommends those numbers for the 10,10x,11,11x heads as a reference for ya.

good site, good info.

posted August 27, 2004 10:39 AM
Checked this weekend...we are running:

R5673-10 vpower racing

stock number: 4050

The -10 is heat range of course.

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