25 thou for a 25D4 distributor, 35 thou for a 45D4. ----- Original Message ----- What is the spark plug (NGK BP6ES) gap for a 1967 MGB engine? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://autox.team.net/pipermail/mgs/attachments/20210117/21772f2c/attachment.htm>