I will write up a "beginners guide" just for AV10 modifications of stock pieces. The suggestion for searching and obtaining a previously enjoyed Motobecane or MBK AV10 rather than a knock off version is a very good idea. The fit and finish of the knockoffs seem to leave a lot to be desired and the low price lack of quality control gives a lot of porosity on the casings that can be problematic when reworking the engine. Also the previous enjoyed engine make sure you get the lower mounting brackets hardware with it because it is different to the AV7.
Similar to the AV7 mild porting, there is a lot of goodly power in the AV10 with the added advantage of reed valve to stretch the usable portion of the power band. Makes the sometimes desired ability to idle and have goodly high end power more of a reality... and the added bonus of reliability.
Need to be aware that later model stock pipes like the Z expansion pipe looks good but contains EU mandated restrictions for speed and sound.
> Graham Motzing Wrote:
> Hit up dos, that's where this engine came from. They have a bunch of
> used junk that is probably cheaper and better than the reproduction
> china stuff on treats. This engine came with a good crank installed
> I'll take some good pictures or maybe even a little video and put
> everything from the av7 on here, it literally looks about as hard as
> swapping a a35 into an a3, I've just never done it.
> Thanks for chiming in Reb, that's kinda what I'm hoping for, ported with
> one of the late model style pipes, 8k rpm range with really good torque.
> If I can get a solid 45 and pull hills at 40 - all with stock like
> reliability- I'll be very happy. (edited)