100hp Sporty

[partner1010]

I'm sure this has been covered a bunch of times, but is there a build for a 1200cc sporty to make 100hp, without nos, just the normal changes, heads, cams, pipes...etc.... Thanks in advance.

[mayor]

yes, by adding displacement.  EGNBLU had a 90" sportster that hit over double 100, but I wouldn't call what he did normal stuff.  Check out these guys:  http://www.nrhsperformance.com/index.shtml

[02xl1200c]

Zippers Hammer 88
http://www.zippersperformance.com/catalogue/showproduct.asp?cat=865&prod=2031

[partner1010]

Thank you for the info everyone, is there anyone doing it with just 74" jugs?

[02xl1200c]

I dyno'd at 94.5 with stock displacement.  I don't think I could get to 100 w/o some increase in displacement.  Change your requirement to 90 HP and you'll save a ton.

[partner1010]

Would you mind telling me your build?

[mayor]

Change your requirement to 90 HP and you'll save a ton.

tooo true!

Thank you for the info everyone, is there anyone doing it with just 74" jugs?

It could probably be done with a really good set of heads, well breathing intake and exhaust, really high compression and a fairly long cam turning at really high rpm's but why would you want that?  

[mayor]

Ken where in western MD?  I live in PA right above western MD. 

[02xl1200c]

Partner:  I have an 02 1200 Custom.  I replaced the pistons and heads with Buell Thunderstorm pistons and heads-pretty cheap upgrade.  I think the heads were 5 something and the pistons w/rings were 120.  I added the Screamin' Eagle .551 cam and Samson Caliber 2-1 pipes.  I already upgraded the ignition module to the SE and had the SE air cleaner kit and the carb thunderslide kit.  Finally, I had stage 2+ headwork done including larger valves and better springs.  That came after the initial build.  I got almost 91 HP before the headwork.  So for the $1000+ it cost me for the stage 2 job, I only got 4 HP but I got the stronger springs which is what I really wanted running the .551s.

wannabmayor: I live in Middletown, MD but spend a bunch of time in Deep Creek Lake.  How far are you from Deep Creek?

[mayor]

Middletown, MD- Frederick area?  I'm about 1 1/2 hours from Deep Creek and about 1 1/2 hours from Frederick. 

where did you dyno your bike? 

[02xl1200c]

HD of Frederick

[Coasty]

I'm sure this has been covered a bunch of times, but is there a build for a 1200cc sporty to make 100hp, without nos, just the normal changes, heads, cams, pipes...etc.... Thanks in advance.

Zippers and other compamy have complete build kits to do so or will do it foy you.  Also ther is one company that makes a direct bolt on turbo making an EFI sporty 130 hp.

[rigidthumper]

We played with the delivery drivers 05 1200C and came up with 95 HP and 82 TQ. Used SE575 cams, SE springs, SE 10.5 pistons, cleaned up his stock heads and HQ XL valves. We even used his stock, cored, mufflers. When he switched to the VH slip-ons, he dropped 4/4.
HTH
Robin

[saltcaveminer]

i have the zippers hammer kit in my 03 sporty.i have no dyno info to share with you ,they claim 120 hp.yes this requires basically gutting the cases and widening the bore and lenghtening the stroke.the engine just makes it into the frame.it is a very depenable kick ass ride.Salty

[Hillside Motorcycle]

We have seen north of 100 hp several times(almost a decade ago) with T/storm casting(modified by us) and Wood 9B cams, Mikuni, Supertrapp, Crane ignition. They hover at 85-88 ft/lbs.
Not that difficult.

[EGNBLU]

Building a 100hp is not cheap. One thing leads to another and before you get it where you want it, you have a ton of cash invested in it. It is a blast to ride, but you have to remember you will NEVER be able to get anywhere close out of it what you put into it. I went the easiest way and went 90" 1474cc with a lot of high performance everything. It did 107hp and 108tq. Tuning is the hardest part to get right. If it is a FI bike with a SERT or PC it probably would be a little easier than finding someone that will spend the time on a carb bike with a programmable ignition. 

NRHS in Longmont CO. built mine and it runs fantastic. They do have a 1250 kit that has put out 100+hp, but you need to stick to their recipe and find a tuner.

90-95 hp is much less expensive and a lot easier to achieve.



Jimmy

[Hillside Motorcycle]

Building a 100hp is not cheap. One thing leads to another and before you get it where you want it, you have a ton of cash invested in it. It is a blast to ride, but you have to remember you will NEVER be able to get anywhere close out of it what you put into it. I went the easiest way and went 90" 1474cc with a lot of high performance everything. It did 107hp and 108tq. Tuning is the hardest part to get right. If it is a FI bike with a SERT or PC it probably would be a little easier than finding someone that will spend the time on a carb bike with a programmable ignition. 

NRHS in Longmont CO. built mine and it runs fantastic. They do have a 1250 kit that has put out 100+hp, but you need to stick to their recipe and find a tuner.

90-95 hp is much less expensive and a lot easier to achieve.

Our's were 1200cc poweplants that were north(102-104 hp SAE).
Don't have much call for them as they do come at a cost.


Jimmy

[kevinj]

Wouldn't it be alot easier to buy a wrecked buell, and use that engine in your build? You would already have a great performing engine, with the best heads, best headers,... It would also be cheaper (in the end) than trying to come up with a completely tuned engine, which will need alot of hours for fine-tuning on the dyno. Not to say that the engine's lifetime will be severely shortend when going for high compression and small (lets say stock 1200cc) displacement.

[gOOseman]

Yep......going north of 100HP can get pricey.......I'm living proof..........anybody wanna buy a slightly used kidney used mostly for filtering beer......need more parts....

[Hillside Motorcycle]

It'll cost about as much to go to 88" with an Axtell Cylinder kit.
Combine that with V-6 cams and they'll roll at about 90-95 hp and 100-105 ft/lbs, with OE carb and modified OE head castings.