Interesting to compare the graph with standard:
http://www.omegaowners.com/forum/YaBB.pl?num=1166809967Peak torque is exactly the same at 250 Nm. We expect this since it's broadly proportional to engine capacity, which hasn't changed.
We can see that the torque used to peak at around 3,000 RPM with a smaller peak at 5,000. We have lost a little around 3,000 RPM if the OEM graphs are to be believed but the peak around 5,000 is more pronounced and since power = torque x RPM this gives better peak power.
The ripples you can see are contributions from resonance in the exhaust and induction system. At some engine speeds they contribute torque. At others they strangle it slightly.
The shape of the graph looks good. Fairly flat torque and building power up to 5200 RPM or so. The way the power flattens after that, but doesn't take a dive until the rev limiter makes me wonder if it's limited by breathing rather than cam profile - i.e. if you can get the exhaust and intake to flow freely enough there
might be more to come. Might ultimately be limited by valve size or something - less easy to improve.
It's certainly a believeable plot. Real figures there rather than "bragging down the pub" figures.
Kevin
Author
Topic: ROLLING ROAD............. (Read 6023 times)