http://www.youtube.com/watch?v=v0o4Yt6e ... r_embedded
mal ne frage an die anderen: sind das echte 9700 U/min ???? ich kann das irgendwie nicht so ganz glauben

mit sicherheit ist das ein guter tunerJohn Bitch hat geschrieben:Ich weiß nich was ihr euch einbildet, der Persson hat nen eigenen Zylinderkopf entwickelt der hervorragend ist, der Persson verbaut mikuni Flachschiebervergaser mit ausserordentlichem Erfolg. Da hat hier keiner auch nur im Ansatz was entgegenzusetzen mit seinem W110 gediddel. Das is ne ganz andere Liga, da kann man nur in Ehrfurcht erstarren. Wer hat denn den Motor im CSP 34er gebaut?
just my 2 cents...
....aber:Hello,
This engine was built for at least 4 years ago as an R&D project.
It is designed to have peak power at 9000rpm and 14bar bmep, if I can hit this goals it will pump out 265hp or 138.4hp/lit.
Only small changes has been made since first build, it has mostly been sitting on my shelf but the plan is to race the engine for next season.
The pulls on the video is up to 9700rpm where the rew limiter kicks in, the power is 248hp at 8900rpm.
No special oiling mods are done, just ordinary full flow with 26mm pump and oil return into main gallery.
New header was tested today, 252hp at 9000rpm and keeps the power almost to 10000rpm.
There was also a 8hp increase at 7000rpm, I have only made the calibration of A/F maybe some improvements could be expected from calibration of the ignition curve which I will do the next days.
Next change will be "top shot" injectors, after that a custom made piston, which will raise the comp ratio to hopefully about 13:1.
I still have 13hp up to reach target, a 3-4% increase could be expected going from 11.2-13:1 in CR.
BTW I only use my std size OTEVA75 dual springs, valve lift is 16.3mm(0.641").
/Johannes
