View Single Post
Old 01-08-2012, 04:01 PM
nightcruiser nightcruiser is offline
Motorized Bicycle Elite Member
Join Date: Mar 2011
Location: USA
Posts: 1,180
Default Re: Spark Plug reach-why not use longer?

I don't know if this will be helpful or informative, but since I have the parts right here I threaded a stock china girl plug and an NGK BP6HS into straight and angle fire head(s) and took some pictures. Since the heads are not mounted the plugs are just finger tight and do not have that final quarter turn that torques them in place. The NGK appears to protrude a slight but further into the head than the stock plug.
Attached Images
File Type: jpg NGK_Straight.jpg (120.4 KB, 74 views)
File Type: jpg Stock_Straight.jpg (124.0 KB, 79 views)
File Type: jpg NGK_Angle.jpg (139.9 KB, 75 views)
File Type: jpg Stock_Angle.jpg (143.3 KB, 80 views)
Reply With Quote