Yes, it's done, I've finished my 230ccm engine after a much too long time.
The carb has a well setup, there is just a small hole from idle to less open thottle.
Now the technical details sorted from the inlet to the outlet:
- modified Airbox
- Mikuni VM28-418
- 200/225 cylinderhead
-> incl. cylinderhead optimisation with porting to 71mm and a bigger outlet
-> Webcam camshaft stage 3 incl. Valve Spring Kit With CrMo Retainers Beehive (Race)
- 225er cylinder
-> with 71mm piston from Wiseco, compression: 10,25:1
- 225 crankshaft (58mm stroke)
-> incl. 225 ballancer
- Akrapovic Racing exhaustsystem (complete system incl. headerpipe)
- 5 disk clutch (not std. at the 125ccm engine) with fitted pressureplate for springs froma 600ccm Yamaha engine
Here the results from the dyno (stronger as the feeling from my testrides):
Performance: 21,8 hp @ 8,091rpm
Torque: 20,9 Nm @ 6,643rpm
Here is the chart in comparison to a:
TW125 (+10,4 PS {+91%}/+12,9 Nm {+161%})
TW200 (+5,8 PS {+36%}/+4,9 Nm {+31%})
Click to zoom!
Here are the org. prints from the dyno:
Regards, Sebastian
