Originally posted by mike323
OK, the intake cam closes 3 degrees later, hence bringing peak hp about 200-250rpms furter.
Where do you get 18 degrees difference, can't you tell there's a mistake, The B6 exhaust cam has (180+53+18 = 248 duration) and the BP exhaust cam has (180+56+14 = 250 duration). Also Mazda calculates advertised duration at 0.004" and not 0.003", not that it makes any difference.
OK, the intake cam closes 3 degrees later, hence bringing peak hp about 200-250rpms furter.
Where do you get 18 degrees difference, can't you tell there's a mistake, The B6 exhaust cam has (180+53+18 = 248 duration) and the BP exhaust cam has (180+56+14 = 250 duration). Also Mazda calculates advertised duration at 0.004" and not 0.003", not that it makes any difference.
Also engine with shorter stroke to bore ratio tend to produce hp at higher rpms hence the B6 creating better high end results over the BP engine.
Anyway, this discussion is useless, since B6 stuff doesn't interchange with BP stuff, due to the engine physically being longer.
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