23cc juice box on 27cc bb?

[Jeff23]

I just got my 27cc kit and put my juice box on it. I know it is designed for the smaller engines but will it help out at all? I didnt run it without the juice box yet but i did run it with it and it seems fine. Should i grind some of the inside out?

[Brooks]

You can grind it out to increase the volume. We did just finish a Juice Box for the big bores, and they are the same outside, just machined out more inside. They should be available within the next day or so.