Model B spark plug?
Posted:
Sun Jan 07, 2024 1:00 amby Thackers
Hi guys, I'm uncertain as to which spark plug type i should be using in my B.
I know it came to me with a long reach type (BR7ES) and works ok, but browsing all that seems to be offered is a short reach version (BR7HS) So which is the correct one? Thanks for any help
Re: Model B spark plug?
Posted:
Sun Jan 07, 2024 2:53 amby Fast n Furious
19mm is the correct reach. So BR7ES.
Re: Model B spark plug?
Posted:
Wed Jan 10, 2024 3:23 pmby jbcollier
The ignition systems are pretty marginal so a non-resistor plug would be a better choice: B7ES.
Re: Model B spark plug?
Posted:
Fri Jan 12, 2024 8:04 pmby Steve J
Apologies if I've got this wrong, but as far as I know all the A, B, C, LC, D & LD models use a short reach plug. Using a long reach plug on these early models runs the risk of putting a dent in the piston crown....
Re: Model B spark plug?
Posted:
Fri Jan 12, 2024 9:25 pmby Fast n Furious
Just had a look at an old model B head in my junk box. It has a 19mm reach plug in it. Extracted the plug and found it was shimmed with washers. Doh!
