Hi, got my mini running spot on today:-). however I took out spark plug no1 to confirm id set fuelling up more or less correct with colour tune and the ceramic bit at the top snapped of the spark plug (not colour tune). as a result I want get some asap (today!). up until now ive always used champion N9YC and always ran very nicely. however I am going to have to get spark plugs from Halfords as its the only place I can guarantee having stock and being open.
they don't seem to do the n9yc so I will get ngk ones.
im not sure out of BPR6ES and BP6ES which will be best for my car though. its a 79 998 with accuspark electronic ignition conversion and a lucas sport coil. also what should the gap be. up till know ive always set it to the recommendation in Haynes. ive read though that the gap can be increased for a slight power advantage when running electronic ignition?
Cheers