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19th September 2020
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Chief Harley Engineer
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Join Date: Mar 2007
Location: Derby
Posts: 544 Sportster/Buell Model: XL 1200 softail frame&NOS Sportster/Buell Year: 2000 Sportster/Buell Model #2: Buell XB1250 Uly XT Sportster/Buell Year #2: 2009
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Wait... Are you telling us that you have changed your SE.497 to Andrews N4???
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19th September 2020
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Riding with Angels
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Join Date: Jan 2008
Location: So Cal
Posts: 22,361 Sportster/Buell Model: XL1200C Sportster/Buell Year: 2006 Sportster/Buell Model #2: XL1200C Sportster/Buell Year #2: 2006 Other Motorcycle Model: 48 "Totalled" By a Douche Other Motorcycle Year: 2012
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Basically just changed cam timing and nothing else
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Thy Sportster Come
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2006 Sportster XL1250C
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Build by Jester Motorwerkz West
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19th September 2020
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A Million Facts & Figures
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Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,498 Sportster/Buell Model: XL883 Sportster/Buell Year: 2007 Sportster/Buell Model #2: Buell Cyclone Sportster/Buell Year #2: 1999
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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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19th September 2020
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XL FORUM TEAM MEMBER
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Join Date: Sep 2014
Location: Liverpool
Posts: 108 Sportster/Buell Model: Cyclone M2 Sportster/Buell Year: 1999 Other Motorcycle Model: Suzuki SV650 Other Motorcycle Year: 01
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Quote:
Originally Posted by rocketmangb
Basically just changed cam timing and nothing else
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Possibly but looking at the numbers I'm going quicker than you
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10.52@126.86
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20th September 2020
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Chief Harley Engineer
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Join Date: Mar 2007
Location: Derby
Posts: 544 Sportster/Buell Model: XL 1200 softail frame&NOS Sportster/Buell Year: 2000 Sportster/Buell Model #2: Buell XB1250 Uly XT Sportster/Buell Year #2: 2009
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Quote:
Originally Posted by aswracing
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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This is exactly I was trying to point out... They are the same cams.
Although they can vary from set to set timing wise. |
20th September 2020
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Riding with Angels
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Join Date: Jan 2008
Location: So Cal
Posts: 22,361 Sportster/Buell Model: XL1200C Sportster/Buell Year: 2006 Sportster/Buell Model #2: XL1200C Sportster/Buell Year #2: 2006 Other Motorcycle Model: 48 "Totalled" By a Douche Other Motorcycle Year: 2012
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Quote:
Originally Posted by gusm2
Possibly but looking at the numbers I'm going quicker than you
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True
Whats your bike weigh ? |
20th September 2020
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Master Custom Bike Builder
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Join Date: Sep 2017
Location: United States
Posts: 3,058 Sportster/Buell Model: 1200/1250C Sportster/Buell Year: 05
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Quote:
Originally Posted by gusm2
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 ��
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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; 20th September 2020 at 19:38..
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7th November 2020
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XL FORUM TEAM MEMBER
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Join Date: Sep 2014
Location: Liverpool
Posts: 108 Sportster/Buell Model: Cyclone M2 Sportster/Buell Year: 1999 Other Motorcycle Model: Suzuki SV650 Other Motorcycle Year: 01
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Lots of different opinions between here and Badweb, I went with the recommendation of Andrews themselves and as mentioned earlier it seemed to give positive results, I've invested in a Dyna 2000 ignition module now also, let's see what next year brings.
Ps I still haven't weighed it ��
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7th November 2020
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Riding with Angels
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Join Date: Jan 2008
Location: So Cal
Posts: 22,361 Sportster/Buell Model: XL1200C Sportster/Buell Year: 2006 Sportster/Buell Model #2: XL1200C Sportster/Buell Year #2: 2006 Other Motorcycle Model: 48 "Totalled" By a Douche Other Motorcycle Year: 2012
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Lot less than my Rubbermount
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24th December 2020
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Senior Chief Know It All 1st Class
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Join Date: Oct 2019
Posts: 1,185 Sportster/Buell Model: 883 Evo Sportster/Buell Year: 1989
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Andrews N8
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