practice engine
I do not own a Werks B5 but I have researched them quite a lot and everything I have read & herd they are great engines, fast, reliable & great run time. Watch the 2009 Nitro Cross. Jeremy Kortz did very well with it and from what I read has several gallons on it. I am currently running the GRP engines and my next 2 engines will be the B5. Even though these engines are only $200 I believe they are a full race engine. It seems the 2013 pipe and p3 plug are the ticket.