Re: Eating plugs?

Posted by hendred on Jul 24, 2012; 11:07am
URL: http://silk-motorcycles.221.s1.nabble.com/Eating-plugs-tp5000678p5000683.html

Hi,

I have got my Silk running and MOT'd at last - frame/ engine 124/126.  Firts run yesterday for the MOT.  Had some plug problems so checked the manual.  I am using NGK B8HS at present.  
Manual gives Champion L10 for running in and low speeds, the L10 is superceded by the Champion L86C. The NGK equivalent is B6HS.
For high speed touring the manual gives KLG220 or NGK B8HC.  Modern equivalents for the KLG F220 seems to be the NGK B8HN.  The difference between the NGK B8HS and NGK B8HN seems to be the projection of the earth electrode from the body of the plug.  The NGK B8HN seems to have no projection at all.

Now for some confusion; the Champion L10/L86Y has the same projection as the NGK B8HS.

The Champion L86C/ NGK B6HS runs hotter than the  NGK B8HS and is more tolerant to oil.  I'm going to try the NGK B6HS while riding the bike during the running in period and see if the plug condition improves.

Anybody else tried the softer plug?

Jon