| Author | Message | ||||||||||||
     Jadow |
Anyone offer performance cams for the new longer cam shaft design? | ||||||||||||
| Mesozoic |
Are the cams different from the '07 and earlier XBs? I was thinking about upgrading my cams, but wasn't sure whether they were available since the engine was upgraded for '08. | ||||||||||||
| Jadow |
I have been searching for the cam specs for my 08 XB9SX with no luck. Not even a Buell tech would share. I just want to know so I can plan performance upgrades. | ||||||||||||
| Blake |
Last info I had was...
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| Jadow |
Thanks so much Blake. | ||||||||||||
| Blake |
You're welcome.  | ||||||||||||
| V74 |
i have made this suggestion a few times,first few times fell on deaf ears or was derided,then a few agreed with me, buy a high ratio roller rocker kit,put two on the intake side only,give the other two away/sell or keep for a rainy day,check rocker box clearances and no need to install higher lift cams with all that that entails,a buell is a buell not a harley,why people still insist that these bikes should have the same valve lift intake and exhaust baffles me???buells have a good exhaust system from valve to end of can,its on the intake side that they are most restricted,this mod should net 2-3 rear wheel bhp,with no loss low down or mid range,try that putting in high lift cams and you may get holes in the rev range or even lose power,have seen post on here where someone has put high lift cams in and lost power, | ||||||||||||
| Jadow |
Glad you reposted. My finding stated Buell designed the first 984 cams with special cam "Ramps" to ease the valve train, so they could reach the higher RPM. I agree cams designed for long stroke/low rpm limit should not work well in the short stroke 984, I have heard good results for the 1200. Do I have to use Roller Rockers? HD is now offering a different ratio rockers (non roller). And I am concerned with the strong warning from all manufactures on use of High Ratio rockers on the street. | ||||||||||||
| V74 |
no,you dont have to use roller rockers,i didnt know they did high ratio none roller rockers,not seen any strong warnings about use of high ratio rockers from all manufacturers on the street ??? got a lot of info from a website on a twin carbed buell(one either side of the bike)that was thrashed on the dyno that had high ratio roller rockers in it,which was also thrashed on the street,no problems where reported???they managed to get some great power out of it, | ||||||||||||
| Newxb12ss |
"Anyone offer performance cams for the new longer cam shaft design?" First, it's not "new". The Redshift .585" cams are probably the best bet going for a hot street/track day engine, but you will want the compression bumped and the heads properly ported to use those cams. The stock Buell XB grind is pretty aggressive already for a street engine, but makes some concessions for emissions purposes, reducing it's potential. |
