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22nd April 2007
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Harley Engineer
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Join Date: Nov 2004
Posts: 331
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Congrats to KCNPA69!
I was fortunate to be able to watch as Mike Velasco put KCNPA69's, 2002, 1200/1250cc conversion on the dyno today to check it out.
Some pretty amazing thunder as it ripped off a respectable and "snorting" 92 hp and 85 ft, lbs. of torque. Still running the factory 2-2's with SEII slip-ons. Combined with the mild .497" cams it helped bring the torque in early with 60 ft. lbs at under 2,500 rpm, yet did not fade out until 6,500 rpm.
Congrats on a fine build!
Last edited by Gone; 22nd April 2007 at 01:46..
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22nd April 2007
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Land Speed Record
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Join Date: Dec 2005
Location: Orange Park
Posts: 741 Sportster/Buell Model: 883 XLC, now 1212 Sportster/Buell Year: 2005
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what heads were on this build?
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883->1212 NRHS reverse dome, SE .497 cams, SE 1200 ICM 7000 rev limit, stock heads, Screamin Eagle SP Slash outs.
[SIGPIC]http://www.xlforum.net/vbportal/forums/signaturepics/sigpic4931_1.gif[/SIGPIC]
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22nd April 2007
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Dirty Old Dog
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Join Date: Jun 2005
Posts: 2,446 Sportster/Buell Model: 883R bored to a 900 Sportster/Buell Year: 2002 Sportster/Buell Model #2: Cushman Other Motorcycle Model: Briggs & Stratton Chopper
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Kick-ass numbers.
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22nd April 2007
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Flat Track Racer
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Join Date: Sep 2006
Location: N.W. coast
Posts: 221 Sportster/Buell Model: 1250c Sportster/Buell Year: 2002 Other Motorcycle Model: kawasaki 800 vulcan Other Motorcycle Year: 2005
Reputation: 79
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Thanks to Dan @ NRHS
Quote:
Originally Posted by jrazo
what heads were on this build?
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If anyone is on the fence about NRHS or those guys ability to produce great power, I have to say their word, products, and service all exceded my expectations. Dan spent time on the phone with me on several occasions(answering a lot of dumb questions) and made sure I ordered all the right stuff to build the motor I wanted( which by the way, arrived in less then a week) Thanks, Dan! Also thanks to Paul at Olympic Power Sports in Port Angeles who put my build together, He's a great machinic! When he was done, he tuned it by ear; haven't had 1 backfire in the 600 miles since the work was done.On the Dyno today it showed at 1/4 throttle 16.8 to1 ; at half throttle 16.3 to 1 and at 3/4 throttle showed 16.3 to 1(lean across the board) and the dyno guy suggested a jet kit, bigger jets, fatter needle, but its running so well I'm prone to not mess with it. If you read this Dan, what do you think, jet kit or leave well enough alone?To answer your question, the heads I used are listed in my signature. KC
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NRHS 1250 Kit -'04' xb heads- .497 cams - Jetted 46 & 180, 2 shims, on stock carb - 2 into 1 caliber exhaust-S.E.6800 rev limit- 85 HP-77FP Torque
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23rd April 2007
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Land Speed Record
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Join Date: Jul 2006
Location: Australia-Ipswich
Posts: 756 Sportster/Buell Model: XLH 1200 Sportster/Buell Year: 2001
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If those figures are at a steady throttle and not WOT then they are not extremely bad but still should be richer, if they are at WOT then they need to come down a lot.
Quote:
Originally Posted by kcnpa69
If anyone is on the fence about NRHS or those guys ability to produce great power, I have to say their word, products, and service all exceded my expectations. Dan spent time on the phone with me on several occasions(answering a lot of dumb questions) and made sure I ordered all the right stuff to build the motor I wanted( which by the way, arrived in less then a week) Thanks, Dan! Also thanks to Paul at Olympic Power Sports in Port Angeles who put my build together, He's a great machinic! When he was done, he tuned it by ear; haven't had 1 backfire in the 600 miles since the work was done.On the Dyno today it showed at 1/4 throttle 16.8 to1 ; at half throttle 16.3 to 1 and at 3/4 throttle showed 16.3 to 1(lean across the board) and the dyno guy suggested a jet kit, bigger jets, fatter needle, but its running so well I'm prone to not mess with it. If you read this Dan, what do you think, jet kit or leave well enough alone?To answer your question, the heads I used are listed in my signature. KC
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1200 XLH, "D" shaped exhaust port, SE 497 cams, 9.5:1 CR, 1.850 inlet & 1.615 exhaust valve, 48 primary & 190 main jet, NOKK needle no shim. 84TQ & 81HP
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23rd April 2007
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Senior Master Custom Bike Builder
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Join Date: Aug 2005
Posts: 3,839 Sportster/Buell Model: XL1200C Sportster/Buell Year: 05
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Quote:
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Some pretty amazing thunder as it ripped off a respectable and "snorting" 92 hp and 85 ft, lbs. of torque. Still running the factory 2-2's with SEII slip-ons.
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That's very interesting. I thought dan said a 2-2 pipe is limited to 85 hp and it won't make more than that.
Can you post the dyno sheet?
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2005 XL1200C
Those who trade liberty for security have neither.
Last edited by CBAS5; 23rd April 2007 at 17:42..
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24th April 2007
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Flat Track Racer
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Join Date: Sep 2006
Location: N.W. coast
Posts: 221 Sportster/Buell Model: 1250c Sportster/Buell Year: 2002 Other Motorcycle Model: kawasaki 800 vulcan Other Motorcycle Year: 2005
Reputation: 79
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Quote:
Originally Posted by CBAS5
That's very interesting. I thought dan said a 2-2 pipe is limited to 85 hp and it won't make more than that.
Can you post the dyno sheet?
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All I can tell you is what the dyno readout tells me. and the guy that was running the dyno is supposed to be one of the best around. I don't know how to post on this site, but I scanned the readout and I have it on my PC. If you PM me your e-mail address, I will send it back to you and maybe you could post it for me? KC |
22nd April 2007
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XL FORUM TEAM MEMBER
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Join Date: Nov 2004
Location: cordova, tn
Posts: 12,744 Sportster/Buell Model: xl1218rr turbo Sportster/Buell Year: 1993
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You can always change the jets and see how it feels but document what you currently have in there. The other choice is to go back to the guy that built it and ask if he would run that lean. My guess is that he would not. Too lean can cause some major problems under the right circumstances.
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Spoiled but definitely not rotten. Started life as a black 1993, 1200 Now-1218, Home ported 2009 FI heads, SE 551 cams, Aerocharger variable vane turbo. Dyna2Ki, JMC aluminum swingarm, Chainsikle custom mid forward controls, GBC inverted front end, 3 degree wide-glide trees and 5 degree raked cups. 18x5.5 fatspoke rear with 150/60 and 21x3.5 with 120/70. 
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22nd April 2007
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Land Speed Record
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Join Date: Dec 2005
Location: Orange Park
Posts: 741 Sportster/Buell Model: 883 XLC, now 1212 Sportster/Buell Year: 2005
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I have to agree with Ralph, at 16:1 AFR, those heads are parched for more fuel. I wouldn't be surprised if you found 4-5 more hp with proper air fuel mixture
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23rd April 2007
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Bike Builder
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Join Date: Nov 2004
Location: Tinley Park, IL
Posts: 1,807 Sportster/Buell Model: 883/1212 XL Custom Sportster/Buell Year: 2004 Sportster/Buell Model #2: XLCH STROKER Sportster/Buell Year #2: 1959
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Those heads you say are 04 1200r, did NRHS do any additional work to them? Are they Stage 1, Stage 2?
Very impressive numbers with those .497 cams.
Also I think you are on the tad lean side, I myself would consider bumping the jet up, but that's just me. I would think that if you ride two up or get into stop and go traffic you'll start to hear pinging when the weather gets warmer.
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2004 Vivid Black 883 Custom, CONVERTED With NRHS 1212 Cylinders, 10.5 to 1 NRHS Dome Pistons, Stage 2 NRHS 1200 XB Heads, SE .551 Cams, TC88A, All the Right Stuff
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