Plug recommendations

Hi folks,

I found this group by searching around Google groups. I have a '62 BSA
A65 with a '65 Lightning bottom end. It was fitted by a previous owner
with twin Amal concentrics (930s) and a 12 battery & ignition. I live
in Brooklyn, New York and I have two sets of spark plugs to use, so
I'm asking for your recommendations. Oh, the plug cables are NGKs from
twin Lucas coils. My two options are NGK B8ES's or NGK BP6ES's . A
mechanic put the BP6ES's on, and said that's what I should be running.
Somebody else has said that the NGK cables are for racing and that I
probably shouldn't use it on a bike for city use. The Haynes manual
says use the B8ES's. What's your take? Is there a place on the
internet that explains all this? I just rebuild the carbs, but before
that, the B8ES's were fouling up and the bike rode erratically after
about 30 minutes of use.

Thanks in advance for your opinion(s).

I have only had this bike since last August, and I'm still learning
the ropes with it.

Chris

 

That is a very hot plug. I dunno much about ShiteOldBeezers, but I'd be
worried running a plug that soft. Danger of burining a hole in the
piston(s). I'd change mechanics.

Someone knows **** all. I'd change acquaintances or drinking partners,
too.

Sounds about right.

If the plugs are fouling that quickly, I'd suspect the bike to be
running over-rich. Usual culprits: wrong jets, wrong needle position,
sticking choke control (or is it a tickler on Amals?).

Something else you need to consider, although it's unrelated to this:
has the bike been coverted to run on unleaded? Or are you using an
additive?