Hi all, been a long time since i have posted on here. Recently got myself a Baja 5B SS fitted with a CY29cc motor.
I have just recently bought the Rovan 30.5cc head kit along with the 2mm stuffed crank.
It says it does fit the CY29cc but also states that these heads have a 38mm opening so will have to be used on a crank case with a 39mm opening.
That to me is a bit confusing.
I am guessing that the head is 38mm but the bottom end will have to 39mm?
Does anyone know if the CY29's bottom end/crankcase opening is 39mm?