Thanks! Yes dyno numbers are measured at the wheel, and are corrected for altitutde @ 5200'.
We took .093 out of the motor between the head and the block combined (not going to share the specifics on each).
Squish is .019
Calculated CR is 14.0:1, AFR = 11.8 on 91 octane pump, stock 9100 rpm rev limit
Everything inside the motor is still stock: cams, gasgets, crank, pistons, rings, throttle botties, head ports, etc.
Cams are degreed to 105 ex and 105 in
Full Hindle Megaphone exhaust
No ignition timing change - yet.
The master is just a regular Brembo 16 x 18 master cylinder made for a single caliper
The only change to the airbox is that I am using a filter that replaces the entire airbox cap and allows for +50% more airflow into the motor
Thanks for sharing more of the details Ryan.
That 0,093 inch or close to 2,3mm total reduction is quite a lot. From seeing the piston at TDC I'd guess it is at least about 0,8-1 mm from the cylinder and the rest is from the head both for reducing squish and not to end up with extraordinary amount of CR. Very interesting.
With that I understand now why the manual cam chain tensioner. Have you degreed the cams by removing the wheels and pushing them back offset, or just by different positioning with the chain? How much did the degreeing contibuted to the current power figures?
I think playing with the ignition can bring some more power - possibly in the midrange. Do you find the Bazzaz much better than the PCV? If yes in what aspect?
Are you still on stock fuel injectors? What is your duty cycle at WOT before rpm cutoff?
Dunno about your race specifications, but a bit of honing on the throttle bodies and new velocity stacks might help with the abrupt trailing off of the torque and help further ponies up at higher revs.
I guess you have read the news that for world SBK ssp300 class from Assen's race weekend Honda has got some adjustments to match the others.
From the article
"So for this weekend, the Honda’s minimum weight is now 153kg and its rev limit is 10,200" .... "Honda competitors may also shorten their air funnel and remove the airbox intake tube."