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  #11  
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Randy_rots Randy_rots is online now
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Wait... Are you telling us that you have changed your SE.497 to Andrews N4???
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  #12  
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Basically just changed cam timing and nothing else
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Years ago, I was at a Buell event up in Wisconsin, with lots of factory folks. One of whom was someone who worked in the HD "Product Development Center" (PDC) and was heavily involved in the motor programs. He told me point blank that the SE .497 grind and the N4's are the same cams, despite the minor differences in specs, which he attributed to being spec'ed at different rocker ratios.
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  #14  
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Quote:
Originally Posted by rocketmangb View Post
Basically just changed cam timing and nothing else
Possibly but looking at the numbers I'm going quicker than you
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  #15  
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Randy_rots Randy_rots is online now
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Quote:
Originally Posted by aswracing View Post
Years ago, I was at a Buell event up in Wisconsin, with lots of factory folks. One of whom was someone who worked in the HD "Product Development Center" (PDC) and was heavily involved in the motor programs. He told me point blank that the SE .497 grind and the N4's are the same cams, despite the minor differences in specs, which he attributed to being spec'ed at different rocker ratios.
This is exactly I was trying to point out... They are the same cams.
Although they can vary from set to set timing wise.
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Originally Posted by gusm2 View Post


Possibly but looking at the numbers I'm going quicker than you
True

Whats your bike weigh ?
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  #17  
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Quote:
Originally Posted by gusm2 View Post
Update, I fitted Andrews N4s and initially was disappointed with the dyno figures as my rwhp was down from 94 to 89 but the torque was up from 83 to 89, I also shed almost 10lbs by fitting a lithium battery, got hold of a pair of standard 1200 jugs and had them rebored to suit my +30" pistons, I lost15lbs myself during the drags closed due to Covid season.
It's now doing 1.5 60 foot times and down to 10.93.
I'm quite pleased with it........... nitrous next ��
Just moved the power band to the left is all.
More midrange power, less top end. Good for a street bike.

Anyone know how much gearing changes affect torque? Specifically imput (primary) sprocket.

Last edited by 60Gunner; 1 Day Ago at 19:38..
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