| Author | Message | ||
     Topgunbandit |
Hello to all, I have just recently joined the Dark Side ( as my riding buddies have called it) after 16 years of riding crotch rockets of the Japanese variety. I purchased a 2003 XB R and have removed the motor and sent it off to Revolution Performance for the 90" big bore kit to be installed. I did some checking beforehand and they seemed to have the best results that I was looking for, Horsepower and BIG torque. I was wondering if anyone on here has had this kit installed. Any feedback would be great as the motor is about two weeks from being finished and the anticipation is killing me. Thanks and this is a great forum. | ||
| Diablobrian |
the 90" kit is still pretty new. It just came on the scene (publicly)in the last month or so. There are quite a few 88" bikes around, though most probably go into race bikes. | ||
| Olinxb12r |
Shazam here on the site has the 88" kit, and it is pretty amazing. Are you changing your sprokets, drive gear and stuff? I know Sam went with a smaller rear sproket because it would be impossible to keep the front end down without it. Do they recommend the chain conversion with that big of a displacement jump? I'm always amazed that Sam's belt doesn't break every time he twists the throttle. | ||
| Hogs |
So I guess that kit installed on a xb9 takes it out to around 1270 cc`s approx: 76 Incher ?? | ||
| Blake |
Troy, Besides the 90" kit, what other performance modifications are in the works? Cams, head work, exhaust? What is being done for fuel system to accommodate the higher performance? | ||
| Topgunbandit |
Wow, that didn't take long. The bike is a 2003 Xb9r that was converted to a 12 ( crank, Throttle body, heads ported and polished, and a re-programmable race ecu with the race filter. Therefor the 90" kit takes it to the correct 1274cc size. According to Revolution Performance the heads are fine with just a port and polish job as long as flat top pistons are used instead of the domes that normally go with the kit. They have my ecu as well as the software for it to engine dyno the motor once it is done, setting up the fueling is part of the deal. They have to bore the throttle body as well as case bore the motor. I already have the race exhaust that came with the bike when I purchased it. The stock 12 cams are also being used. They did not recommend the chain conversion and I hope I don't have to use one. I will be changing the sprocket as the one on the bike is from the 9 to gear it down as it was. Any other suggestions? I would love to hear them. | ||
| Topgunbandit |
Here is the bike when I bought it. The guy had it on Ebay. It didn't sell and I contacted him after the auction and in my opinion got a great deal.  | ||
| Xb9 |
I just got my Revolution Performance bigbore XB9 on the road last week. Still breaking it in, taking it easy and keeping it under 3500rpm. Working on the fuel mapping using the Technoresearch SW from American Sportbike and a Wideband O2 controller with datalogging. I retained the stock XB9 stroke because I want the revs for roadracing. It's the same stroke 3.125" that the XBRR uses, except my bore is 3.875", as big as you can go in the stock XB cases. Comes out to 1208cc Here's what's done: Darkhorse crank - 3.125" stroke lightened and balanced Millenium big bore kit - 12:1 / 3.875" 585V2 cams Revolution Performance stage3 headwork Bored out Throttle body & intake manifold (49.5mm) Micron Exhaust. Alum. engine sprocket and clutch basket. Rich Conrath's chain conversion (Nice!!!) All I can say at this point (3500 RPM limit) is holy s_it! It sounds and pulls very strong, It will be awesome once I get it broken-in and tuned. I can't even describe what this thing sounds like with the Micron, but it sounds real nasty. It's still real tight, need to get some time on her before I can see what it will do. Brian does exceptional work, and was very helpful in answering all my questions as I was building the engine. Great guy! Regarding the chain drive conversion, that would be the way to go if you want to play with different gearing, which you most probably will want to do. Really depends on what you are going to do with it (street or race). (Message edited by xb9 on March 14, 2006) | ||
| Topgunbandit |
Thanks Xb9, One question didn't Revolution Performance have the mapping done for you or did you install this kit yourself. Mine they are supposed to map and break in on the engine dyno that's why I ask. | ||
| Olinxb12r |
I think I saw that one on ebay too bandit. Somebody put a lot of time in to that bike. I was really surprised when I read that it was an XB9 pushed out to a 12 and they even took the time to paint the frame and everything. | ||
| Topgunbandit |
The frame, swingarm, triple clamps, rearsets, and pass. pegs are actually powdercoated. It looks great. The guy who owned it was a club racer who also worked at a HD/Buell dealership. He did some fantastic work on the bike. I sold all the extra parts (bodywork, 9 crank, ecu's, and lots of other stuff) already so it turned out to be a great deal. Hell the guy even delivered it to me part way. He was very nice and helpful. That seems to be a trend with you Buell guys.  | ||
| 99buellx1 |
The difference is not in the rear sprocket the difference between them is in the primary. Now there will be some difference depending on if it is still using the '03 belt setup (the newer belts are a bit different, and have better longevity) | ||
| Hogs |
Topgunbandit, If you use the 12 crank will that not take it to 1475 cc`s or there abouts??? | ||
| Topgunbandit |
The size of the 90" is 1474cc not 1274. That was a typo, sorry. The sprocket I spoke of was the primary one, not the rear pulley. About that belt set-up vs. chain.... I have the '03 set-up which I understand is not as good as the later models. What seems to be their big downfall ? From what I read if you mishandled the belt they would break, is this correct or are they weaker altogether ? With the chain conversion is the chain tightened by the idler pulley,as there is no axle adjustment? I would like to stay with the belt if at all possible. Thanks guys in advance for the answers. | ||
| Diablobrian |
The 03 belts are all together weaker. I would convert to the 04+ belt style if you intend to keep the belt. If not Trojan makes an affordable chain set-up that does not require swing arm modification. | ||
| Topgunbandit |
Do you have a site where that is available? | ||
| No_rice |
trojan is a sponsor, just go to the sponsors section. saw that on ebay the first time he tried to sell it. talked to him. hes a tach if i remember right. he had some time into it for sure. | ||
| No_rice |
i treated this original 03 belt just like a baby, and bottle fed it.(literaly!)   needless to say it stripped a few teeth and flipped the bike when it caught causing a fair amount of damage. trust me, id highly recommend a chain conversion. i am in need of one myself. | ||
| Diablobrian |
here is the link: britnett-carver.co.uk/Trojan-Horse/prods/132.html put the www in front of that. | ||
| Topgunbandit |
Is that from a shot of NOS ? Not good if so. Yes, the guy that had the bike was a tech at the dealership. Real nice guy, very helpful. I've been very happy so far and can't wait to get the motor back from Revolution Performance. | ||
| No_rice |
boost in a can, mans best friend! thats even a fairly small shot. its on its way to being plenty larger! after crash...  after rebuild...  | ||
| Topgunbandit |
Very nice bike !!! What size NOS shot are you running? Is it a dry system that fogs the airbox or wet system? I have run nitrous on the last 4-5 crotch rockets I have owned , even bought myself a NOS fill station, to keep the bottles full for myself and friends. I would like to possibly put a moderate shot on when I get done breaking in the motor like maybe 30 or 40 HP. Anyways I love the military look for the bike, sometimes we crash for a reason.  | ||
| Skyguy |
Topgun, So if I may ask.... What is this going to end costing you? | ||
| Diablobrian |
Tim put some good pics of his system on another thread a little while back. (4-w weeks) it is a single wet nozzle in the velocity stack. Do a search using his name (No_rice) and nos or nitrous and it should come up pretty quickly. | ||
| No_rice |
that was a really week about 15 shot that did that, now i admit that that belt has been pounded to death its whole life and had about 9000 miles on it when it happened. majority of the 03 belts barely made it a few thousand. actually its wet. i am in the process of bumping up the shot to atleast a 30 thinking maybe a 50 shot max with my stock fuel pump. 50 would be pushing it though. | ||
| Topgunbandit |
Skyguy, The 90 kit is $999.00 plus case boring(275), throttle body work, teardown of motor and engine dyno work to set up mapping(500). The heads were already done when I got the bike but they are going to flow them and see where we are at. Approx. $2500.00 when all is said and done. | ||
| Topgunbandit |
No rice, Why do you use a wet system? I've been using a dry shot system for a couple of years now on FI bikes and they work great. The ECU has always been up to task at delivering additional fuel because of the temp in the airbox and fogging the box seems to give a smooth delivery instead of a sudden hit. I was just wondering why the wet system ? | ||
| Skyguy |
Topgun, That thing should haul some ass. Nice sleeper! | ||
| No_rice |
that sudden hit is fun though aint it? lol seriously though, buells seem to have a tendency to easly run lean at the first sign of many mods. besides that i know of to many dry systems grenading when something didnt compensate. doesnt take much extra for a wet system and leaves more possiabilitys for raising the shot up even more | ||
| Topgunbandit |
Gotcha, Just asking because the dry is so easy to install. I have room for a 1.5 lb bottle under the airbox cover now that the lid to the box is removed. I was going to hide the bottle there with a remote valve and use the horn button, to keep it all hidden. Just fogging in the top of the filter cover right above the temp sensor. Maybe I'll stick with the 30 shot and call it good. I suppose if it blows up I'll have myself to blame. |
