this is for an SR
The intake cam is on a 108 centerline and the exhaust is on a 116 centerline.
Zero is the starting point but you can retard the intake 1-2 degrees and advance the exhaust 1-2 degrees to widen the lobe separation to smooth out the power band and eliminate any overlap.
this is for a KA
The intake cam is on a 121 lobe center and the exhaust is on a 116 lobe center. This is actually the same timing as the OEM cams and I believe the JWT cam are very close as well.
leave the exhaust cam on the 116 lobe and advance the cam intake 2 cam degrees which is 4 crank degrees (1 cam degree = 2 crank degrees)
Zero is always the starting point unless you are going to put a degree wheel on the crank but this would be the recommendation.
|