Re: 1977 Garelli NO1

Joe Woods /
This single post is part of a larger thread. Start from the top or view this post in context.

i dunno what you meant by:

_i mounted the exhaust one hole closer because the other one was missing the rubber_

Something to do with exhaust could be part of it since greater backpressure gets things like the piston crown hotter.

This added heat promotes a faster burning mixture. If ignition timing is already borderline-too-advanced, some added heat in the combustion chamber could push it over the edge of pre-ignition.

This single post is part of a larger thread. Start from the top or view this post in context.

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account