KJC 150 hp from M8

[Hillside Motorcycle]

Recently saw a dyno chart floating on the interweb where KJC was able to extract 150 hp from an M8...cubic inch unknown.
Ready, set, argue....

[1FSTRK]

The graph on his facebook page shows 146.97hp and 150.11 tq.
As you said there are no specs so no way to tell if this is just a big engine or if he has actually figured something out. It is not a bad tq curve, comes in early and hp peaks in the 5200 range and carries so he is not just screamin it to the moon.

I see on his wen site he offers a 127" for M-8 so maybe that it.
That would make it 1.14 hp/ci.

[Jonny Cash]

I've seen one M8 @ 117" go 142/136.  It had Wards heads and re-worked intake.  Jason Broski in Detroit built the bike, said the manifold really picked it up, Ward said it flowed 30cfm difference from front to back cylinder.  He runs the bike at the track, it went 10.98 @ 118.  Good running bike.

[NCTURBOS]

Are these bigger power making M8's using a D&D exhaust, or something else?

K.

[rbabos]

Obviously not sumping.
Ron