4 mil

[Bobbybrown2018]

I am building my 4 mil banshee stock cylinders that have been ported pj34mm carbs spacer plates on the carbs on a stock head on race fuel what would be a good starting jetting for breaking in my motor elevation 1086

[Ayesully810]

stock head, or cut head?

[Bobbybrown2018]

 

It's been cut for a 4mil

[trickedcarbine]

What type of Porting and pipes? I just did one very similar to yours with a dune type port CT pipes and it’s at 152 main, CEL needle second from bottom clip, and 55 pilot.