Just built a polini 130 et3 engine, race crank, 25 Carb and all associated upgrades. My questions are :-
25mil carb came with a 90 main jet, will this be ojk for running in or should I go bigger.
What size of idle jet should I run it on.
There appears to be a central jet adjacent to the main jet/needle housing with a no. 55 on it. Am I correct in thinking this jet is fine unaltered
& finally- Polini suggest 16 BTDC for timing- does anyone think different as they seem to on www.setup.small-frame.de