Join Date: Jun 2012
Location: Harker Heights, TX
Thanked 122 Times in 69 Posts
we do not have actuall compresion on the engine yet, we install it straight away what is kawahara give to us. there is extra thick gasket comes with the package which will lower the compression.
our goal here is to check the durability of the bore up kit.
i will give you an update of the compression ratio once we have done with durability check with extra thick gasket.
you are right, 12.8:1 is way to much for casting piston.
i'm sure it will not reach more than 12:1
we have been testing about aweek now with Indonesian temperature is constant around 29-33celcius and humid weather. approximately, we have put more then 500km to the bike and the bike is ok and in normal condition. no need bigger radiator.
If they need more testers, they can send me a kit and I will test it in American weather. I put about 500 Km on it every week, mostly highway around 130 km/hr.
2012 CBR250RA all black w/ ABS, blackened muffler heat guard, P3 brake flashers TS+.
Green: reflective rim decals, LED lighting, custom "to punish and enslave..." lettering.
Riding gear: Icon Contra Mil-Spec Hi-Viz & HJC CL-16 helmet
Planned: Upgrade to 2017 FZ-09 w/ ABS
My MPG via fuelly:
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