Yamaha Jupiter-Z, Compression 13.8 Jawara Motoprix So Kemayora

 Racing M. Zaki on a Yamaha Yamalube FDR KYT Trijaya successful champion MP3MotoPrix round Kemayoran Circuit VIII at last. Managed to leave his opponents. What's the secret? Let's ask Harris aka Mletis Sakti, the mechanic.

"In the past Kemayoran, the key motor should be durable and able to quickly get out of thecorner," said Mletis. For durable then the compression should be fitted.

"When QTT, compression to 14, but when the race was so hot down so 13.8," continuedthe mechanical origin of this Jogja. The trick to replace the lower piston.

While so much faster increase in rpm, the duration of the camp also changed. "From 272 degrees to 270 degrees. All was done before the final Sunday," said the mechanic wasready smile.



There is one move again to conquer Kemayoran. "The ratio of gear 1 and 2 in particularshould be fit, because a lot of corners broken," he added. For an amended so heavy gearratio 13: 24. Lay-out circuit this time was down to 1st gear requires at R 2.

As for teeth 2 dientengin. "From the beginning 16/29 18/33 dientengin so," he explained.Oh yes, the composition of the gear this time 14: 42, this figure will certainly change the character following the circuit. Proven with changes like this, the origin Zaki Bondowoso,East Java could be a champion in Jakarta. (motorplus-online.com)

DATA MODIFICATION
Piston: TDR
Sok back: YSS
Exhaust: AHM
Carburetor: Sudco 24