| Author | Message | ||
     M2typhoon |
I've got my 2000 M2 all apart and want to do some not so extreme upgrades to the valvetrain and cylinder heads. I just bought a Buell race exhaust, Screamin' Eagle ignition and a forcewinder intake on the bike. I'm looking to create power without putting on a 1250 kit. Looking for light and durable valves, retainers, springs, pushrods, rockers, cams, and possibly lifters. I'd be happy with 90 hp at the wheel. I'm not really scared of the price but I'd like to keep it under $1500 in parts. I will be doing my own port work. Any ideas?? | ||
| Hootowl |
90 HP isn't all that much, I don't think you need to spend any money on the heads/valves. A set of cams (stock X1?) and a re-jet should put you in the 90 range, given that you've already got a race exhaust. | ||
| Cyclonecharlie |
Matt, If you can get your hands on a (Buell 44 intake manifold)it will move you in the right direction.Even with the stock carb. you will notice an improvement.Don't know a # value as after a month I installed the 44 carb. then dynoed.(5hp diff) The intake tapers down from the carb end and is designed better than stock, upping the flow.(IMO) | ||
| Buellistic |
VALVE TRAIN: XB valves,XB type valve springs, true up ports, XB cams, and 1.75 rocker arms ... Race Exhaust ... Dual Fire Ignition ... Ham Can Air Filter with Biggest Air Filter you can get ... THE "BIG QUESTION" IS ARE TUNING FOR THE RPM RANGE WHERE YOU RIDE OR TOP END HP ??? (Message edited by buellistic on May 13, 2011) | ||
| Brinnutz |
Put XB pistons, jugs and heads on it. I did an am thoroughly happy with it. Well, I have XB9 pistons on mine for near 12:1 compression but even with 12 pistons you should be around or a little more than 90hp. I'd ditch the forcewinder and go for a race air cleaner (I'm biased though now, but I used to run a FW on the stock motor). You'll need the NRHS front mount for XB heads, and drill out the carb mount, plus XB rockers which will eliminate almost all splooge. It also looks better since the XB jugs have a larger fin area and fills the engine space up a lot more. I run the Revolution Hydro solid lifters and am happy, along with S&S roller rockers. Next up is 44mm carb (already have intake) on my motor. I run an XB grind cam thats made for the tuber cam bushings... Check my profile for any other mods you might like to see. | ||
| Phelan |
You're willing to spend $1500 but you don't want a 1250 kit? Why not? That one piece with a tune should hit your goal, especially if you're porting the heads (even doing so yourself). | ||
| M2typhoon |
I'm thinking the 1250 kit will make the rotating mass heavier than I'd like. Looking to keep the HP in the 3-6k range. The XB mods sound like an awesome idea though. So.. how different is the valvetrain in the XB to the normal XL? How many parts can be applied to the XL engine? Not looking for a cookie cutter 1250 kit even though I know it will be easy. | ||
| Brinnutz |
The entire top end from the cases up can be swapped over, you'll just need the NRHS XB front mount for tubers. Check my profile, you can see what I brought over from an XB to the tuber motor. Jugs, pistons, heads, oil pump... You can use your stock pushrods btw. One of these days I'll get my bike dyno'd and post up the graph. | ||
| Onespeedpaul |
XB parts on a tube frame is always cool in my opinion. haha, makes me want to build another bike, and i'm not quite finished with the one i have. | ||
| Brinnutz |
Have a look through this thread (it's my rebuild thread). http://www.badweatherbikers.com/buell/messages/476 23/601705.html There's a pic of a T-storm M2 just like mine in there and a shot below it of mine from about the same angle and you can see the differences in cosmetics between the motors better. | ||
| Phelan |
Well, the 1250 kit has forged pistons instead of cast, which makes them much stronger than stock AND lighter than a comparably sized cast, so my suspicion is that the weight would be the same. And the extra cc's will give you power everywhere, so that argument is void as well. If you don't want be a cookie cutter, that's understandable. But your reasonings so far otherwise are flawed. There is a reason everyone else does it. | ||
| Phelan |
However, if you can get the entire top end of an XB, some simIlar spec'd cams, NRHS front mount and an XB oil pump for the same money, that is the wiser choice IMHO. The whole top end will bolt on, but keep in mind the cams will not. Also, the pushrods clearance with the XB top end is .040" less than stock. By itself it isn't an issue, but if you use thinner base gaskets or head gaskets than stock you will need shorter pushrods. | ||
| Brinnutz |
With domed pistons (XB9), I am running my stock pushrods. With XB12 pistons you shouldn't have a problem at all... | ||
| M2typhoon |
Ok.. so how about a 1250 kit with an XB top end?? | ||
| Brinnutz |
FWIW, I had a 1250 kit for XB heads already bought and ready to install when I decided to stick with stock XB parts which were cheaper, easy to replace even though I already bought the XB 1250 kit... } | ||
| M2typhoon |
SO I would have to purchase a 1250 kit for the XB and also puchace the top end stuff. I would just rather bore the thing .010 over and call it a day with with some good pistons. Brings me to another topic. Pistons, who makes GOOD ones for the XB? | ||
| Phelan |
CP is the first and top name that comes to mind for me. That's what my LSR friends use and sell. | ||
| Phelan |
As far as that goes, that would be a cheaper and viable alternative to the 1250 kit, while still having excellent pistons and saving money to get the better heads and mount. |
