| Author | Message | ||
     Bonstrosity |
If I were to put a different engine in, is it a possibility to go larger? would revtech or S&S fit right in? or would it have to be a buell engine? | ||
| Phat_j |
has to be a sportster based engine, revtech does not make one....... s&s however does make a 100" engine that will fit...assuming its a tube frame bike... | ||
| Jersey_thunder |
s&s however does make a 100" engine ..... BIG BUCKS!!! | ||
| Old_mil |
Yeah...but you have to do something to get the 100"er to fit though...I forget what it is. | ||
| Bonstrosity |
does it involve cutting the frame? or what would you have to do to make it fit in a 2000 m2? | ||
| Firemanjim |
No cutting involved.It just squeezes in--as long as its not a real long stroke 100".Need the 4x4 motor. | ||
| Djkaplan |
S&S makes a 91" engine that's a direct bolt-in for tube framers. You can get as many as you want for $10,000 a pop (you supply the transmission and electrics). | ||
| Tripp |
i think the 91 incher requires a new front motor mount but otherwise bolt-in. a damb fine looking motor too! | ||
| Djkaplan |
The S&S (should be $&$) website says the 91" is a direct bolt-in and the taller 100" needs the different mount. http://www.sscycle.com/catalog16/pg/Sportster_Buell/html/Sportster_Buell.htm | ||
| Bonstrosity |
$&$ is right jeez, I didn't know it'd be 10000 dollars for the engine. are there any other companies that would make one for the buell? otherwise I suppose I'll just leave the bike how it is. | ||
| Davefl |
A good shop can make your engine make mucho power with head work and bolt in parts for a lot less than $10,000. | ||
| Denfromphilly |
Hi Dave, My 99X1 was built by a local guy known as a sportster motorhhead. It has 10.5:1 pistons, a steep cam (not sure but probably an nillin N9), Race ECM, head work, big valves, V&H muffler, header, etc. It makes gobs of torque and power, there is really no reason to make it go any faster (althoough I would...lol). It cost the last owner about $4,000 for the motor work. Den | ||
| Davefl |
I am in the process of doing some work on my M2.. I am doing the disassembly and reassembly myself but I am having Cycle-Rama port my heads and intake, and install larger valves. Project is not over but I hope to come in under $2000 and hope to get 110 to 120 Hp, about a 50% gain  (Message edited by davefl on August 23, 2005) | ||
| Natexlh1000 |
Has anyone tried to change over the valve gear to XB style? Smaller valve stems, different guides, different springs..... Can it be done? Or more importantly, is it worth it? | ||
| Denfromphilly |
I think Nillin states that the XB heads are the highest flowing stock HD heads they ever tested. Sounds interesting to bolt on an evo motor if it's possible... | ||
| Phillyblast |
Aaron's testing and the experience of others is that stock to stock, the XB heads were worth somewhere around 5-7 hp over Tstorm heads. I put them on my S2 so it's certainly possible to fit them, but you will have to change the motor mount - the right side mount hole was moved inboard on the new heads.. If you have a "Lightning" motor or an S2 with flat tops it's a bolt on, as opposed to Tstorms which would require changing pistons as well, since the XB heads have a flat squish band. If you already have a Tstorm motor, my personal opinion is the 800 bucks or more for the XB heads plus mount gets you an awful lot of work to your existing setup. I was buying heads one way or another, so I went with the "latest and greatest". | ||
| Djkaplan |
You could drop $800 pretty quickly in a machine shop. Those guys have a way of making you want what you don't need. | ||
| Davefl |
$800 plus mount $300 = 1100. That should get you a lot more than 5 to 7 HP if you start with thunderstorm heads. | ||
| Phillyblast |
Dave, 'zactly  | ||
| Rick_a |
The best bet would be getting the new heads and cutting them for the 15 degree Thunderstorm dome. That would be cost effective and make better power than the stock heads alone. BTW, you'll want the new XL heads as they have the carb mounts drilled. There's also a new performance version that has a 55cc combustion chamber (10.5:1 CR). | ||
| Djkaplan |
Rick, what heads did you use? The high compression ones? | ||
| Tripp |
thanks for the clarification on the s&s dan, yes indeed it should be bolt-on for 10 gees!! i don't have a before and after dyno or anything however, for about a grand (if you install yourself) the 1250 bigbore kit from nallin sure gave my bike a noticeable difference in power. i still have stock tstorm heads and stock sporty cams but, i definitely have a lot more power than the original 1203cc. | ||
| Bluelightning |
I went with the stock heads, but did a port/polish job and had larger intake and exhaust valve installed. Converted to carb (running a reworked CV-44) and Knight Prowler cams (.630 lift over the stock .500 lift) in my x-1. This thing made 101 rwhp and 108 ft/torque corrected after it was put together, I need to go back to the dyno and retune the carb now that it is all broken in (I put new pistons and rings in while I was in there). I think all total I spent around $1000 for the machine work to the heads, cams and carb/intake. I did all the honing and asembly myself. The best part is that it's still at 74" motor and beats that crap outta most of the 95", 103", and even a few 113" big twins that run around here in the quarter. God I love it!! | ||
| Natexlh1000 |
How much lift can you get away with and still have a long lived engine? | ||
| Mbsween |
DaveFL, Are you getting new cylinders or working with the stock ones? I'm toying with the idea of juicing up the X1. I'd like to see between 100-110 rwhp and still be able to ride the thing to work, and keep the belt. Is there a power level where breaking the belt becomes possible? | ||
| Denfromphilly |
My bike runs 110 rwhp and my brother has one that runs 100. The belts seem to take it just fine and we are both 200lbs and like to accelerate but don't do too many wheelies. The drivability of mine was not real good in traffic or school zones, it bucked at 15mph and required a lot of clutch. In traffic it felt like it was going to lunge into the car in front of me. I changed the front pulley to the 26 tooth and although it's a small change it made a noticeable improvement. I don't think the belt is an issue at 110 hp and the drivability will be good unless you get a cam that shifts the power bands up to about 2500-2700 rpm where mine is. My brothers seems to have solid power from about 2200-2500 and drives nice. | ||
| Mbsween |
Den What model do you have and what upgrades, if you don't mind listing them out. Never mind the bike question , just figured out how to see the old profiles (delete the -moderator in the url) Did you do anything to the FI to get that far HP wise? Does the friggin thing spend 80% of the time with the front wheel in the air ? Mine wheelies okay now and I just have the race ecm, force winder and Wileyco pipe Thanks Matt (Message edited by mbsween on August 23, 2005) | ||
| Davefl |
Mbsween, I will be running the stock cylinders. If they need it they will get a overbore and new pistons.. As for the belt I know a guy from Kentucky with a S2 with a 135hp 88" and he has no trouble with the belt. | ||
| Denfromphilly |
Yo Mbsween, my bike wheelies quite easy, sometimes just shifting too fast and I need to be careful rolling on the throttle in turns or the wheel comes up as there is less suspension when leaned over. When downshifting into a turn it can lock up (squeak) the rear wheel for a moment, quite exciting. It takes care and planning especially smooth clutch operation and not too much throttle to stay out of trouble and the almighty throttle is a siren call to problems with the police. It does burn outs a little too easy, I did one unintentionally this morning on the way to work, did not even rev it very much and it squeaked the rear tire and spun a little. I adjusted the clutch yesterday and I am not quite used to it or happy with it's position. I can never seem to find the "right" spot for clutches on any of my bikes. I think I need to just stop adjusting and get used to it... My bike was worked on by a local bike shop for the previous owner but the guy that did the work cannot recall exactly what he put into it. He says he knows it's a 1250 kit, oversized valves, ported heads, 10.5:1 compression, he put cams in it but cannot recall exactly what, probably a Nallin N9, he likes a .555 lift cam with this combination. Race ECM, race header, V&H, and he had to change the injectors and throttle body as it ran too lean. It still tends to run lean when I look at the spark plugs and the HD guys had a hell of a time getting it to run right after a TPS reset. They wanted to replace the TPS and a few other FI parts but the head mechanic had an X1 with similar mods and he got it straight. It took 6 hours for a TPS reset! I put in the factory fan kit and then installed a couple more computer fans that blow on the front and rear cylinders. With the high output motor it tends to get hot in traffic and the factory fan kit does not turn on at a low enough temp. By the time it turns on the motor is cranky. It's a really great bike to ride, quite exciting and lots of fun, the power band is a little higher than stock and it feels right at home a little above 3000 rpm. I have ridden a stock cyclone and the entire new line up and they are quite civilized in comparison. Now that I am used to the power I would go for another 10hp and 10 ft lbs if I could do it easy and not spend too much money. | ||
| Rick_a |
Naww, man. As luck would have it they came out a couple weeks after I had my motor together. I used forged 10.5:1 pistons. I'm still in the tuning faze but like Denfromphilly says it's very entertaining to ride. Amazing the difference, and the low end torque is much greater and smoother than before. I've learned to not use engine braking at all anymore 'cause the rear wheel gets to sliding, hopping, and skidding. I have so much fun...when hard on the throttle it's either trying to loft the front wheel or spinning up. On my regular roundy routes I find myself going into corners much faster at the end of these short straights than I was before. | ||
| Mbsween |
Den, Thanks for the info, I can feel the additicion worsening | ||
| Snowdave |
Big Bore....  Although I thought I could do it on the cheap since my engine already had many goodies. My favorite phrase has become, "Since I have it apart already, I might as well." I stopped keeping track of cost several parts ago. Although I am sure my wife could tell you down to the last $. | ||
| Jersey_thunder |
S2 with a 135hp 88" DO TELL!!!! JT | ||
| Loki |
Food for thought. If you go for the XB heads. Add the matching cyls. You will be amazed at how much heat the extra fin area will shed. Almost makes the oil cooler a moot point. | ||
| Rick_a |
I love the look with the "skinny" cylinders. Looks tough. |
