Fast Eddie
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- Joined
- Oct 4, 2013
- Messages
- 21,218
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Gents,
I have been running NGK BR8EIX plugs in my Commando. I also bought, and tried, NGK BPR8EIX. The P stands for 'Projecting'' and refers to the fact that the centre electrode and its insulator project 1.5mm ish into the combustion chamber.
The theory is that being located more centrally in the combustion chamber helps the burn and helps the plug stay cleaner.
I'm struggling to understand how a mere 1.5mm could make any discernible difference! And my back to back runs don't show any difference at all.
So, are there any real pros / cons?
I have been running NGK BR8EIX plugs in my Commando. I also bought, and tried, NGK BPR8EIX. The P stands for 'Projecting'' and refers to the fact that the centre electrode and its insulator project 1.5mm ish into the combustion chamber.
The theory is that being located more centrally in the combustion chamber helps the burn and helps the plug stay cleaner.
I'm struggling to understand how a mere 1.5mm could make any discernible difference! And my back to back runs don't show any difference at all.
So, are there any real pros / cons?