125cc mad
Active Member
So after replying to the post "TDR150 Pitbikes, what are your thoughts ?" and singing the praise of such a cheap new bike which I had only owned for 2 months and ridden 4 times all I can do is sit back in my chair and laugh at my post and review :/
Fast forward to today... Now it's an every 2nd day rider and I'm more used to the bike, so far the OE rear shock has blown out and been replaced.
After reading numerous threads on tuning Mikuni carbs and 140 / 150cc engines I since found out that the factory unit is a crappy 22mm one running a 95 main and a 15 pilot jets which explains the low down hesitation and then the mid to top end crackling and back firing on and off the throttle so I rang the guys at DHZ explained my woes and as of tomorrow I will be sporting a nice new 30mm Mikuni all jetted and prepped for the bike so in the mean time I have been port matching the inlet manifold to the the gaskets, Adjusted the tappets .003 inlet and .004 for exhaust, and cleaned up the ugly restrictive welds in the exhaust pipe header.
Bring on tomorrow hopefully it will be a totally different bike to ride.
All in all this is a huge thanks to everyone who posts here with technical info and general feed back.
Fast forward to today... Now it's an every 2nd day rider and I'm more used to the bike, so far the OE rear shock has blown out and been replaced.
After reading numerous threads on tuning Mikuni carbs and 140 / 150cc engines I since found out that the factory unit is a crappy 22mm one running a 95 main and a 15 pilot jets which explains the low down hesitation and then the mid to top end crackling and back firing on and off the throttle so I rang the guys at DHZ explained my woes and as of tomorrow I will be sporting a nice new 30mm Mikuni all jetted and prepped for the bike so in the mean time I have been port matching the inlet manifold to the the gaskets, Adjusted the tappets .003 inlet and .004 for exhaust, and cleaned up the ugly restrictive welds in the exhaust pipe header.
Bring on tomorrow hopefully it will be a totally different bike to ride.
All in all this is a huge thanks to everyone who posts here with technical info and general feed back.