| Author | Message | ||
     Cobra66 |
Hey, how are you guys doing. I'm the only one who owns a buell out of my group so I'm a little unfamiliar of the horsepower potential. What is the most reliable horsepower have any of you ever heard of someone getting from an xb12. | ||
| Ericz |
I'd say reliability has been established up to about 110rwhp or so. I think there have not been enough XBs with more than 110rwhp out there to really establish enough data for reliability. There are plenty of exceptions but each case is a unique example and probably should not be considered unless you want to include extreme builds. Most of the bikes above ~110rwhp have replaced the majority of the stock components with stronger aftermarket parts. And I'm not saying more than 110rwhp is unreliable (Message edited by EricZ on March 11, 2013) (Message edited by EricZ on March 11, 2013) | ||
| Cobra66 |
110 is still very impressive. Even up against the jap 600's | ||
| Trojan |
Getting 100rear wheel bhp from the XB12 is reasonably easy and relatively cheap. Getting to 110 is pretty hard and expensive. The more power you get the worse the reliability gets. I know a race team that had a 140bhp Buell engine that had a reliable life of 90 minutes between rebuilds  Not what you want on a road bike really. Just make up ground in the corners  | ||
| Cobra66 |
what mods do the 100 horse engines have | ||
| Trojan |
Getting close to 100rwhp can just involve a decent exhaust, intake modes and ECU tune. That is the relatively cheap and easy bit over with.......... After that you are looking at High comp pistons or a big bore kit, roller rockers, cams etc (although the stock Xb cams are apparently good for 110bhp+). Our XB12X based race bike had 105 rwhp with the following engine mods: Wiseco 10.5:1 HC pistons (+40 overbored stock barrels to 1213cc). Heads tuned by Hals H-D Roller rockers Free Spirits full race exhaust headers + muffler Ram air intake system (really benefits at 100mph + so don't really show on static dyno, even with a fan running) RapidBike ECU tuner NGK iridium plugs Running Torco synthetic 5/40 race oil and 112 octane race fuel.   There will be lots of other ways to achieve similar or higher bhp but that is how we did it, and it was 100% reliable | ||
| Cobra66 |
Now, thats a beautiful bike | ||
| Chessm |
get an 1125 and detune it | ||
| Cobra66 |
maybe I could take a busa motor and saw it in half | ||
| D_adams |
This picked up 9 hp with a stock ecm on a xb12, no tuning. Pic is on my 9, it has made a little more power than a stock 12 so far, still needs tuning done to it to make some more.  Add this just because you can?  | ||
| Natexlh1000 |
It's funny the 1125 and detune it comment above since the plots of the horsepower pretty much line up until the XB hits a wall and the 1125 keeps going. | ||
| Deanh8 |
Bored TB, XB9 Pistons, and micron got me 110whp and 10.9 1/4 mile pass in my street XB12R Was reliable until I overrevved it doing a burnout and slammed the valves into the pistons.. my mistake... bike was solid otherwise. (Message edited by deanh8 on April 09, 2013) (Message edited by deanh8 on April 09, 2013) | ||
| Trojan |
Was reliable until I overrevved it doing a burnout and slammed the valves into the pistons.. Which will only really happen if you run XB9 pistons that give much higher compression and almost dangerously little valve clearace...If you try to overrev a stock XB12 that won't happen ......which brings us back to the reliability issue mentioned above  If you really must have a reliable everyday 130bhp bike then buy a 600 sportsbike and save the Buell for less frantic activity It will last longer that way and be worth more when/if you want to sell it. (Message edited by trojan on April 10, 2013) | ||
| Buellblastrider |
you willl need more than a 600 for 130 wheel horsepower | ||
| Trojan |
Most sports 600's will now give betwen 120-130bhp at the crank. Couple that with a lot less weight than the XB carries and there is no comparison in terms of power/weight ratio. If you have to be pedantic and want 130 rear wheel horsepower then a 675 or 750 will do it Either way, these are bikes that are built to cope with that power rather than being tuned by the owner at the expense of reliability, so should last longer : | ||
| Rageonthedl |
I just did a 12 swap into my 9. I did not want to go with the 9 piston. the compression is just too high for a every day rider. went with some wiseco 10.5:1 stock bore. Im not expecting some huge boost in performance but it should be a little better than just tossing in stock 12 pistons. I only paid $205 for them new | ||
| Heyzeus |
The XB is real close in weight to the 600cc sport bikes. They average around 417 wet. The XB stock is 420ish lbs. With a exhaust it can lose 10 or so lbs. The weight is close. A stock 600 pushes 103 to 115hp. Torque is around 44 foot lbs. I think chasing HP is not what these bikes are about. They have loads more torque at less horsepower. You don't have to spin the motor up to access all that torque either. I would just enjoy these fantastic bikes and not try chasing the HP demon. You don't get nothing for free. Sooner or later reliability will suffer. | ||
| Chessm |
last i checked an xb12 is more like 440+ full of gas | ||
| Crabby |
Stop bringing facts into this Chess! | ||
| Andersonhdj |
Know what? If you want 100+hp at 14krpm, buy a Riceburner. Owning a Buell is about something special, it's not everybody's cup of tea, But it's exclusive, definetely ground breaking in the case of the XB's, exotic, and they produce torque that 4 cylinder riceburner does'nt for the same RPM. To my mind there is no comparison, apples with apples chaps!! | ||
| Heyzeus |
The catalog weight for the XB is 395 dry. Add 23 lbs of fuel and around 4 qts of oil for about 7.5 lbs. You are at 425.5 lbs. Subtract 10 lbs for a less of a boat anchor exhaust and walaa 415lbs wet. These are light street bikes. | ||
| D_adams |
Why? I bought a Buell, it's making right at 140 hp at the wheel, although it only spins up to 11k rpm. Stock motor, 30k+ miles on it so far and it's what I'd consider fairly reliable. Yeah, ok, so it's an 1125, but it's still a Buell. | ||
| Andersonhdj |
Agreed, but , the discussion revolves around the XB's and the comparison to Jap machines. Your 1125 has a Rotax motor which is again a different animal in it's design even though it's still a V twin. Zx9's were making 145hp some 10 years ago, but it's not a v twin nor is it a Buell. | ||
| Trojan |
The bottom line is this....yes you can tune the t*ts off your XB in order to gain bigger bhp numbers and then try to stay with your riceburner mates in a straight fight (which you likely still won't by the way). What you WILL achieve is a much lighter wallet, a less reliable bike, lower resale value and still have a bike that will not stay with a well ridden 600/750/1000 sportsbike over a distance. You will also completely miss the point of owning an XB of course, which is why I said that if you want more horsepower then buy another bike and keep the Buell for what it is good at...grunting out of corners and being different | ||
| Andersonhdj |
Perzactly !! | ||
| Glitch |
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| Gearhead |
I totally agree with many of the comments above, put a pipe on it, ECM tune, NGK plugs, maybe a K&N filter and RIDE it!! My race bike makes just over 100hp on a very accurate dyno. There is no way I'd want to have to ride it as my daily and only ride. 100+ octane unleaded race fuel is reason enough... | ||
| Boltrider |
The XB dry weight is without the battery. My Firebolt loaded with fuel is about 450. | ||
| Paint_shaker |
Why should the OP buy some other bike? He was simply asking what the most reliable HP anyone has heard of... I have seen 86 RWHP on a stock 08 XB12R on the dyno. EricZ says 110 and Trojan states 105. While you may not want to give 2 sh^ts about what I post, both EricZ and Trojan KNOW what they are talking about. | ||
| Fast1075 |
My 2004 12S made 81 on the dyno with the tire slipping enough to clearly see a whiff of smoke at WOT. | ||
| Ericz |
Thanks, Paint I'm flattered | ||
| Gregoxb |
MY XB12 made 91 WHP when I dyno'd it. Jardine, EBR ECM, NGKs, K&N. In terms of weight I definitely lost alot with a 2 lbs carbon fiber exhaust. The stock muffler with all the braketry is more than 10 lbs, I'd guess about 20 lbs. Then the tail piece went, the inner air box, belt guards, passenger V frames... all that stuff adds up. How much weight that exactly is, IDK. But I can tell you I have all that stuff in a single box and it is difficult to lift. (Message edited by gregoxb on June 07, 2013) |
