A real back to back of the bc cams...
10-31-2012, 08:00 AM
#23
i've got those.
my engine is F20C2 with all possible bolt on mods and a tune (vtec at ~5600)
could drove only ~20 miles but the car definitely felt punchier at 4-4.5k and up in high gears.
3rd gear is strong all around.
the top end felt somewhat rough. maybe becuase quite significant increase in engine noise.
looking at logs and Gernby's soft dyno the top end looks not smooth:
maybe after all keeping stock valve springs is not enough and valves float indeed....
my engine is F20C2 with all possible bolt on mods and a tune (vtec at ~5600)
could drove only ~20 miles but the car definitely felt punchier at 4-4.5k and up in high gears.
3rd gear is strong all around.
the top end felt somewhat rough. maybe becuase quite significant increase in engine noise.
looking at logs and Gernby's soft dyno the top end looks not smooth:
maybe after all keeping stock valve springs is not enough and valves float indeed....
11-01-2012, 06:18 AM
#25
It's been so long since I've used the Excel based soft dyno that I don't even remember what smoothing values I used. One thing you can do to improve the smoothness is to choose a very smooth / flat road with some incline, and load up your trunk with a known amount of weight. This will increase the number of samples per pull by increasing the load time.
10-01-2013, 10:10 AM
#28
Registered User
As long as the valves aren't floating, like one earlier poster may suspect, you *shouldn't* need to change your rev-limit. BC seems to consider these a "drop-in" upgrade. They *shouldn't* cause any kind of piston-valve contact on an internally stock motor.
