Post by
niznos »
https://forums.nicoclub.com/niznos-u14767.html
Sun Mar 28, 2004 7:56 pm
Lift and duration does not have to match between int. and exh., in fact, lots don't. Both can be longer duration than stock then that will take advantage of the syphoning effect of the exhaust exiting to draw in the incoming fuel/air and boost higher rpm power, but longer duration will lose some low rpm grunt and put a lope in the idle.
I have the Nismo cam for the SOHC with a tiny less lift but with lots more duration. Makes for power above 3000rpm and climbs to redline without slowing, but I don't have a great idle and low end is weaker.
I don't know why Nismo decided to go with less lift, I would have liked it with more. So far the only performance camshaft I've seen that is less lift is the Nismo one. Most others get more duration and lift, but not as much duration as the Nismo.
Anyone know why they may have gone with less lift? What are the advantages and drawbacks?