Need xl1200s data sources and advice : V-Twin Forum: Harley Davidson Forums

c2clifton · 03-16-2003, 09:48 AM

Just bought a sportster sport cuz I'm not a chrome guy and wanted some action. (I also own a 2001 Fat Boy). I've done research and find the following to be the most recommended simple HP adding set up. I would love any input on the set up as well component recommendations, and reference resources. what don't I need? Thank you!

42mm mikuni carb
2 into 1 pipe (white bros, thunderheader)
ignition module
coil
wires
platinum plugs

James · 03-16-2003, 10:28 AM

Quote:

Originally posted by c2clifton
Just bought a sportster sport cuz I'm not a chrome guy and wanted some action. (I also own a 2001 Fat Boy). I've done research and find the following to be the most recommended simple HP adding set up. I would love any input on the set up as well component recommendations, and reference resources. what don't I need? Thank you!

42mm mikuni carb
2 into 1 pipe (white bros, thunderheader)
ignition module
coil
wires
platinum plugs

I don't know the answer but I would have thought the Sportster Sport would allready have all of that except for that particular exhaust.

rovert · 03-16-2003, 10:37 AM

Quote:

Originally posted by c2clifton
Just bought a sportster sport cuz I'm not a chrome guy and wanted some action. (I also own a 2001 Fat Boy). I've done research and find the following to be the most recommended simple HP adding set up. I would love any input on the set up as well component recommendations, and reference resources. what don't I need? Thank you!

42mm mikuni carb
2 into 1 pipe (white bros, thunderheader)
ignition module
coil
wires
platinum plugs

What DON'T you need? Everything except the 2- 1 exhaust. Do a stage one on the bike and don't worry about the other things, their a waste of money, except the Mikuni, and only if you plan to take it up to stage three.
Here is an excellent article on moding your Sporty. Make sure you read the "don't bother" part at the end.

http://www.sportster.org/tech/basic-perf/harley-tax.txt

xxxflhrci · 03-16-2003, 11:50 AM

Pick up a copy of Cycle World and look the review chart in the back. You'll find that the 1200S is slower in time and speed than the Super Glide Sport in the quarter. The RCK is only 3 tenths behind the 1200. You need to do a little more to the Sporty if you want to wake it up for "some action"

rovert · 03-16-2003, 10:32 PM

Not to worry c2clifton, a 1200S will definately "wake up" with the staged mods. 1/4 mile times and speeds are subjective at best and can be skewed by many factors, the most obvious being the riders skill.
Dyno runs, on the other hand, are purely objective and dont't lie.

http://www.nightrider.com/biketech/h...orty_stock.htm
http://www.nightrider.com/biketech/hplist_twin_cam.htm

;-)

olivier · 03-17-2003, 04:17 AM

Do the stage 1 mods first (even good slip-ons iso 2/1 depending your needs for low end torque and power).
For me new SE ignition module with limit at 6800 RPM was a + as hitted the brick wall too often.
When this is done, if still not enough, new cams would be my choice.

xxxflhrci · 03-17-2003, 05:00 AM

Quote:

Originally posted by rovert
Not to worry c2clifton, a 1200S will definately "wake up" with the staged mods. 1/4 mile times and speeds are subjective at best and can be skewed by many factors, the most obvious being the riders skill.
Dyno runs, on the other hand, are purely objective and dont't lie.

http://www.nightrider.com/biketech/h...orty_stock.htm
http://www.nightrider.com/biketech/hplist_twin_cam.htm

;-)

The street or strip is where you want to see your mods shine. Why else do them? Rider skill does have a lot of play in a race. But the Cycle World review gives you best posted times/speeds of a group of runs. As for the Dyno. Ever heard of a "Happy Dyno"...one that is set to read a little high. Dyno runs can be subjective also. It all depends on the kind of "action" you want. My brother has a 98 1200 that has had some good mods, Buell Heads, N8 cams, ignition, carb, V&H 2 into 1 and so on. His bike made 98 hp on it's last dyno run. I have an old Ironhead that made 78 hp. However, I run a 20 tooth sprocket up front. I have really low gearing. Redlight to redlight, I eat my brother up everytime. I never run him anything over a block or so. I know that I would lose, but I never let him know it. To him, the dyno numbers don't add up. He'll figure it out one day. LOL

c2clifton · 03-17-2003, 08:50 AM

Hahahaha, yeah. domination by intimidation. Guy's, I've seen most of this data from searching the net. what I don't find is more owner information, or projects on this bike. there is one guy out there who has a decent site where he goes start to finish on documenting his mods. but that's only one REAL person. there must be more. should I be asking this in another forum? I would love to see a forum on only the sport because of its uniqueness. or am I making it out to be more unique than it is?

olivier · 03-17-2003, 09:06 AM

www.sportster.org

This is THE place.

xxxflhrci · 03-17-2003, 09:16 AM

Clifton, the Sport is a good bike, but not really any more or less unique than the other models. Now the XR-1000 that was unique.

olivier · 03-17-2003, 09:41 AM

Not unique indeed ... but apart stage 1 nothing else needed to have a real good bike.

Tires OK
Handling OK
Performance OK (for stock HD)
Braking OK

Grin OK

xxxflhrci · 03-17-2003, 09:45 AM

Grin is the best part.

werewulf · 03-17-2003, 10:02 AM

i too would like to see some really trick sportsters. i cant seem to find all that much on sportster.org, most of what im seeing is just chrome from the factory accessory book. i was told that xl's are very popular in germany, because the twin cams are very expensive there. the germans do some really jam up customizing. i have looked for some german sites with no luck. i bought the sport, because i saw a bike that was sand blasted instead of chromed. it really looked trick. im going to follow the same sort of lines.

crawdaddy · 03-25-2003, 02:04 PM

What is your goal?? Sportster.org is the place for more info on Sportsters than anywhere on the planet. Not much that hasn't been tried by the guys over there.

My mods so far-
Cycle shack slip ons with modified baffles.
SE ignition module/coils/wires-7000 rev limit
I will rejet at the 2500 mile service. (not there yet)

The rejet is key, it will make the most difference. Stage 1 on a Sport should give you around 70 HP. You want more than that, get ready to wrench on the motor. Myself, I'll probably be quite content when all of the Stage 1 stuff is done. If want stage 2 or 3 the thing will flat out scream if done right, those heads are a great starting point. Keep us posted.

c2clifton · 03-25-2003, 02:12 PM

Ok, here's the deal now. I've ordered thunderheader in ceramic black with all shields in ceramic black, the SE xl1200s ignition kit, using the stock carb rejetted with a Yost power tube, and of course the air cleaner kit. I really think that will be all I need for power and torque. this sport is so responsive at the bottom that I am still surprising myself as I refine out-of-turn acceleration. I'm still screwing around with the suspension a bit, but it really isn't but 3 or 4 clicks off on all of the compression and rebound settings recommended. one click can make all the difference. Sometimes I have to remind myself I'm not on a dirt bike!!!