Originally Posted by
civicized
That better be one big turbo blowing by valves lifted with the Pro 2 cams. Kind of like trying to blow up a beach ball with 3-inch hole in it.
Anyway, on to our b16 mystery
1. Light flywheel in a b16 good for revs but not torque
2. Engine was rebuilt with stock bore, so things could be a little sloppy in the cylinders.
3. The BC 3 cams don't wake up with less than 11:1 compression. While you picked up a little compression with the gsr head, you gave it all away and more with the higher lift/duration cams. Plus you might be losing some around the sloppy bore.
On the plus side, you made power to 8700+ rpms, which is very good indeed considering you would have peaked around 8000 at most with a stock setup. Your engine, if allowed to keep going, might have made power at 9000. Your torque is up quick (ligh flywheel) and flat all the way, tapering off at the usual 6500 rpm area, but slowly. Also good, even though the max torque is on the low side.
A stock b16 would be about 140 hp at around 7800-8000, with torque topping at about 105 lbs at 6500, so you engine is not weak by any means - and its a screamer on top.
Check your compression to ensure you have a good seal, but keep in mind you can't measure dynamic compression with a compression gauge. The BC IIIs are off the seats longer on the intake. Since your power so high in the band, I'm guessing you have the intake cam advanced and exhaust retarded for a lot of overlap.
Another thing is, while the BC IIIs really have a smooth vtec transition, your curve is so smooth, I have to ask: are you sure you hit vtec on this run? If you didn't, it would explain about 8 missing HP and about half as much missing torque.
Not my car man but really good information.