01-24-2013, 10:13 AM
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#359
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Senior Member
Join Date: Aug 2011
Drives: '12 C63 P31, '23 GRC
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Quote:
Originally Posted by avox
AP1 99-03: F20C inline 4-cylinder DOHC-VTEC engine producing from 240 hp (179 kW) to 250 hp (184 kW), and from 153 lbf·ft (207 N·m) to 22.2 kg·m (218 N·m) of torque depending on the target market.
AP2 04-09:The AP2 also included the introduction of a larger version of the F20C for the North American market. Designated F22C1, the engine's stroke was lengthened, increasing its displacement to 2,157 cc (132 cu in). At the same time, the redline was reduced from 8,800 rpm to 8,000 rpm with a cutout at 8,200 rpm, mandated by the longer travel of the pistons. Peak torque increased 6% to 162 lbf·ft (220 N·m) at 6,800 rpm while power output was reduced to 237 hp (177 kW) at a lower 7,800 rpm.
after checking the new car sticker on mine it was some how rated at the 250HP range not sure why as it seems most here in the USA were the 240hp....? 
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Technically the power of the engine did not change from the earlier 240 rating. Rather, the SAE changed their testing regiment. If you applied the new(er) SAE testing regiment to the older AP1s you should get the same figure (237hp).
Either way the general consensus is that the F22C1 is slightly stronger.
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Current: 2023 GRC Circuit Edition, 2012 C63 AMG P31
Past: (2) 2000 MR2 Spyder, 2017 GTI Sport, 2006 Porsche Cayman S, Supercharged 2013 BRZ-L, 2007 Honda S2000, 1992 Integra GS-R
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