Originally Posted by
NitroLuver
so on this engine you're stuck with 8mm in the carb only? doesn't accept inserts? if so what's a good carb to use for smaller inserts gonna try 6.5's on all my new engines
Correct carb on the JL is fixed to 8mm, gives my buggy a solid 7 1/2 run time , pushing hard as i wish, tuned for mileage and easy on thottle will go 9 mins. Not too bad

The rb Killer 9 is the same engine pretty much, does have different carb, which may be hard to find( the carb be itself), but accepts inserts. You will pay an extra 40 bucks for that engine=worth it