Unlike the OHV valve V8's, you can't apply this at all points along the cam lobe. I don't have the K series rocker arm ratios (both the A and C versions) and so if anyone has that correct info, can you please post it here. You rarely see anything over 1.7 rocker arm ratios. I suspect the later generations are closer to the B18C's rocker arm ratios.įor the gen.1 folks, the D series rocker arm ratios are 1.65 for the intake and an astounding 1.85 for the exhaust. what the actual difference is in the 4 generations). In the B16A, I'm told that it is 1.58 on the VTEC lobe but I need someone to confirm if this is across all 4 generations of B16A (i.e. The rocker arm ratio for the B18C VTEC lobe 1.55 and 1.50 for the nonVTEC lobe. ![]() lift with a caliper, make sure to multiply that by your model's rocker arm ratio and see if that co-incides with the lift number on the specs sheet. So when you go to measure your cam's max. lifts after the effect of the rocker arm ratio. When you go to the VTEC cams specs article and see the lift and duration specs, those represent the VTEC lobe's max. The cam lobe has a lift, duration, and ramp. It has been brought to my attention that some of you don't understand this.
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