I am using a Champion L86C at present and the bike starts and runs well.
Looking at the plug it seems I am running a bit rich but the Amal carb is brand new and jetted correctly according to Waller and the Burlen data sheet.
If I try an L82C she is reluctant to start, so I have stopped even trying to use it.
A series of NGK B6HS plugs sit on my bench in shame, hard to start the bike and a “misfiring feeling” once we get underway. I have now just given up on NGK.
I have ordered a Champion L7 thinking it may be better than the modern “equivalents”.
Does anyone have experience of running L7?
How about a Bosch W7AC?
I have finally found a new old stock Lodge HN in the USA that is ordered off eBay but pretty expensive with postage.
Any feedback would be welcome!
David.