supra5677
Pro
Posts: 1279
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posted December 12, 2005 01:56 PM
to Doug Meyer
Stock cam specs on zx12r are:
lift 359/342
duration in degrees 300/294
duration at .050 is 244/238
webcam makes:
lift 383/369
duration in degrees 276/280
duration at .050 is 253/252
okay Doug: what makes this cam any better? Why does the webcam have less total duration but more at .050? I am currently making peak power at 10,750 . How do I move the power band to make peak power at 11,500?
supra
   
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted December 12, 2005 03:08 PM
it may not BE any better. Just because somebody makes something doesn't mean it's better. I'm not saying it's not better- you just can't assume it is without testing it with your combination.
Ok - the Web has more lift, that's generally a good thing.
It also has more duration- that's also a good thing.
GENERALLY more lift & duration = more torque
And remember- it is the largely the centerline timing that places the power peak.
Total vs measured duration- As I talked about in another thread- the comparison is totally meaningless. Any movement less than 1mm and after 1mm of lift is nearly inconsequential to total flow time (in crank degrees).
Doug
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