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May 19th, 2015, 01:54 PM   #51
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Originally Posted by Torque Monster View Post
I am running the Web cams 820/821 RFS grind on my 663, had them make it custom for me - very crazy cam in my previously posted photo. Seems pretty peppy.
So these specs probably, right?: Web Cam Inc. - Performance and Racing Camshafts / KTM 450 (03-07) SOHC 4v Timing Card

For convenience:

intake lift: 10.95mm / 0.431"
exhaust lift: 10.41mm / 0.410"
Advertised Duration:
Intake: 321
Exhaust: 309
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May 19th, 2015, 09:11 PM   #52
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Originally Posted by Taffy View Post
A KTM tech wrote to me indirectly yesterday and said that the 450FX cam has more midrange with a slight loss in top end compared to the 570 cam. the loss matches the gain.

this can only bring you to one conclusion (unless you're FE350 of course) and that is that the lobe centres are different but for the same grind. (basically the same lobes as each other just spaced further apart or nearer in unison)

hopefully that has now put that one to bed.

regards

Taffy
LMAO, What Taffy, Your magic beans jet kit wont solve all his cam issues? Who needs a beefy cam when you can install the jet kit?

Taff I am glad the KTM techs write you indirectly as one would really question KTM if it was directly.
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