Hi all,

Thinking about a sporty. . . I can hear her calling my name.

Just wondering about the different stages and what they all are.

I heard a 1200C with stage one pipes, and to me, it was the best sounding bike I've heard in quite a while.

Any info would be greatly appreciated if possible,

Thanks a bunch folks,

Ride safe,

-Mark.

 

Yes the stage one is just a high flow air cleaner and a rejeting of the carb. It also removes the stock back plate on the carb so it will breath better. Then you do your pipes at the same time. The other stages is when you start mesing with the carb, pistions, heads, and other engine parts.

 

(bear in mind some have different ideas: Stage 1 mostly being pipes or mufflers, high-flow air cleaner of some kind, and a re-jet of the carburetor)

Here ya go from www.sportster.org:


Stage 0: Stock

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Stage .5 (also known as "The Harley Tax"): Stock plus:
SE Air Cleaner(1)
SE Slip-On Mufflers or equivalent(2)
Rejetting (DynoJet, Yost or just jets)(3)

HP=50 for 883, 60 for factory 1200(4)


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Stage 1: Stage.5 plus
883/1200 Conversion for 883s(5,6,7,8)
SE Ignition Module or adjustable one(9)

HP=60 for 883/1200, 65 for factory 1200


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Stage 1.5: Stage 1 plus
Andrews N2 cams (mild)(10)

HP=65 for 883/1200, 70 for factory 1200


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Stage 2: Stage 1.5 plus
Andrews N4, N8, or SE bolt-in cams instead of N2(11)
SE S1 Lightning or other bolt-on +/- 10:1 heads(12)

HP=75

Options: 2 into 1 header system, add +/- 7 hp(13)
SE carb (or equivalent), add +/- 3 hp(14)
XR750 (or other) valve springs, no gain(15)


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Stage 2.5: Stage 2 plus
Professionally ported 10:1 or higher heads
Matching (to head) domed pistons(16)
XR750 valve springs or SE cam kit(15,17)
2 into 1 header system(13)
SE,S&S Super E, or Mikuni HSR42 carb(14)

HP=90+

Options: big valves (big twin size), add +/- 5 hp(18)


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Stage 3: Stage 2.5 plus: (or
Big-bore cylinders and pistons and/or
Stroker kit and/or
Nitrous injection and/or
Supercharging

HP=?

Options: many


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Notes:

(1) Highest flowing air cleaner available, also the cheapest. KuryAkyn and Dragtron don't flow as well and are much more expensive.

(2) Cycle Shack makes SE slip-ons and sell almost identical models for a little less without any Screamin' Eagle script stamped into them. Using a 2 into 2 exhaust system which eliminates the crossover tube may result in both some hp loss on the top end and/or lower rpm torque. Drag pipes, even with "power cones," "torque valves," and/or baffles, cause significant loss of low/mid rpm torque. Recommend avoiding them.

(3) The only thing that matters here is getting the jets correct. A #45 slow jet, and a #170 main jet for 883s, or #180 main jet for 1200s, or #200 main jet for '98 1200 Sports, in Stage .5 ($15 total) will do 95-99% of what the high-buck kits do. Jetting appropriate for one stage may not be right for another. Addition of any performance equipment such as cams possibly requires rejetting.

(4) A 50 hp 883 is NOT the same as a 50 hp stock 1200. The latter has 30-40% more torque at lower rpms.

(5) 883/1200 conversions which raise compression ratio to 9.5:1 (HD, Wiseco, JE) have more torque than factory 1200 at the low end but the smaller valves limit top end power.

(6) The all-HD conversion requires grinding out the heads, which eliminates squish and may cause pinging. The HD pistons are much heavier than most others (Wiseco, JE, KB), which increases vibration.

(7) Requires 1200 ignition module. Also see note 9.

(8) Forged pistons (Wiseco, JE) may be used from Stage .5 up. They are stronger than cast pistons (HD, KB), better withstanding ping and high-rpm use, however, they are usually noisier than cast.

(9) Factory 1200 ignition module rev limits at 5,200 rpm. More power can be had above that even with smaller 883 valves. The non-adjustable SE module is the low-cost solution for raising rev limit, but that is all

 

Thanks