| Author | Message | ||
     Mhlunsford |
I might purchase an x1 engine for my m2 both 2000. Are there any engine difference other than carb vs FI ? | ||
| Stev0 |
for 2000 they were the same here in Australia... Some markets had standard cams in the M2's in the earlier years but by 2000 it was the same bottom end... Easy swap, basically the same as I've done for my Sporty, change intake and remove the rear head sensor. | ||
| Phelan |
Most M2s had lower lift cams for a more "torquey" motor, though they also had less top end because of it. | ||
| Dammitquikgentry |
Was there a difference between the x1 motor and a 98 s3t? | ||
| Stev0 |
No, x1 and s3 were the same.. | ||
| Stev0 |
For each year..... the motor changed in 2000 to a different cam gear profile, different lifters, pressed in crankpin and a reprofiled gearshift detent plate. | ||
| Hootowl |
98 S3T had thunderstorm pistons and heads, like the 99 models. I don't know whether there were other minor differences. But any tuber motor is going to bolt up into any tuber frame from 95-02. Mount points are the same. | ||
| Splatter |
"Most M2s had lower lift cams for a more "torquey" motor, though they also had less top end because of it." Lift has almost nothing to do with it. "Was there a difference between the x1 motor and a 98 s3t?" The big difference is the 98 S3T was carb and all X1's were efi. But if your talking about a 2000-2002 X1 then you also have all the other differences that Stev0 mentioned. | ||
| V74 |
In the US the cams where different but in international bikes the cams where the same. FI v carb and the X1 had single fire ignition the M2 had duel fire ignition so I believe different coils. As a side note saw an article where a guy with a buell with a ignition unit that was switchable between single and duel fire had the buell on a dyno and switched between the two, single fire gave a slight advantage in the mid range. | ||
| Modified4speed |
Correct me if I am wrong but I thought that the 1200 buells up to I think 01 was a HD Sporty 1200 motor. Someone once told me that it was a evo motor but after researching the evo motor has a separate gear box which is pretty neat but not the same. I thought the sporty's engine differed in bolt hole sizes for the head mounts and in later sporty's the transmission had a gear selector plate instead of a shift drum and maybe a few other dissimilarities. For example I replaced my gear box on my 00 x1 with a 99 sporty 1200 gear box and it was like $200. cheaper Than stamping a buell name in the search engine. | ||
| Mhlunsford |
the tubes used modified sportster engines, and some of the buell parts found themselves as standard in some of the later sportsters. some of the guys selling parts for "Buell" will ask more cause the Buell label is more rare. when I call HD I just say a 2000 sportster | ||
| No_sprk |
Ok so does a late model m2 engine share everything with a x1/s3 except for milder (stock xl1200?) Cams and fuel injection? And by late model I mean thunderstorm heads I really like the high torque of an m2. Has anyone built a sporty Evo for TQ not HP? | ||
| Phelan |
Yes. '99-'02 M2s all had thunderstorm heads and pistons. | ||
| Stev0 |
1200S sportsters from 1998 on had Buell castings for the heads but standard 1200 sporty valves. They also ran flat top pistons instead of Buell domed ones. The ignition was specific to the 1200S Sporty too although the multispark ignition pickup is the same one as used on all EFI tubers. Most stuff is interchangeable on any rigid mount 5 speed sporty/buell to 2002. Early 5 speeds had a different profile on the gears and you need to change the output gear to match if you're going to change the box internals... in the same way as you need to change your pinion gear to suit 2000 and later cams if you fit them to earlier models.. | ||
| Stev0 |
This link is useful as a guide for what parts went into which motor/year .. Open two tabs with the different motors in them and compare.. quick and easy and a lot more accurate than getting info off people who haven't had much experience interchanging Sporty/Buell motor parts. http://www.twinmotorcycles.nl/webshop/searchparts. asp?jaar=2000&model=86D42FAD-C5F7-459A-8F12-FDA951 3B5A4F . | ||
| Screamer |
In the U.S., the 1998 through 2003 Sportster 1200S used heads that were the same chamber/ports and valve size architecture as the the Buell Lightning (not Thunderstorm) heads - same for the first generation XL SE heads. | ||
| No_sprk |
Thanks for the post StevO. I may be buying a basket case s3t so I may end up with a sportster engine | ||
| Stev0 |
pre 2000 the cranks are rebuildable and are the ones to get if you intend keeping it... I have about 4 '98-'99 motors and a couple of post 2000 cranks and a set of cases... plus over a dozen sets of heads all up .. Gotta have spares  . | ||
| Mhlunsford |
Installed x1 engine in m2 the only gotcha was the ignition cup had 4 cuts instead of 2 the tach was going crazy. Runs great pulls the front tire off the ground, | ||
| Reepicheep |
Did you bring over the fuel injection, or keep the carb? | ||
| Mhlunsford |
I kept the carb. | ||
| Iamspartacus |
Wish my M2 would pull the front tire up... | ||
| Kalali |
It will if you give it enough gas while releasing the clutch.... | ||
| Iamspartacus |
Lol, yeah- I've heard many people say clutch wheelies are possible. I don't drive mine *that* hard, so I haven't experienced it yet myself. |
