Author |
Message |
Texastechx1
| Posted on Thursday, November 27, 2008 - 10:57 am: |
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Like the title says... is it possible? I tried searching, came up with nothing. I'm thinking, in the future, of an XB9 crank (3 1/8") with a 3 13/16" bore motor with stage 3 NHRS heads and some big cams for an 100+hp, 7000+rpm BADASS! Nick |
Texastechx1
| Posted on Thursday, November 27, 2008 - 10:58 am: |
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And BTW... does ANYONE know where I can get some detailed head flow numbers for NHRS CNC heads? Nick |
Natexlh1000
| Posted on Thursday, November 27, 2008 - 12:05 pm: |
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I think the XB engines are too different for this type of thing to be possible. Perhaps it would be more easy to see if S&S sells destroked flywheels? If you do convert your bike to spin up that high on a regular pasis, you would have to also make sure the valves could close as fast as those "beehive" springs in an XB engine. I think even with the stock stroke, the valves start to float near the 7000 RPM side. Don't take this as a negative though. I have been thinking of something like this since the XB9r came out in 2002! Those things run smoothe! |
46champ
| Posted on Thursday, November 27, 2008 - 12:43 pm: |
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You might call Truett and Osborne The web site lists down to 3 1/2 and the say call for other Custom stroke. How does one post a link? |
Phelan
| Posted on Thursday, November 27, 2008 - 12:50 pm: |
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Nick, good luck with the project. I am in the same boat with a different final destination; I'll be using a heavily modified EFI sporty crank for my DELPHI build. You might research a little bit as well about DDFI III. If it uses a CKP, I would start with an '08-up XB9 crank so you have one less hurdle to jump when you decide to convert to Delphi EFI. |
Texastechx1
| Posted on Thursday, November 27, 2008 - 05:26 pm: |
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Looked at S&S, seems like it would be a custom app. http://www.truettandosborn.com/flywheels.htm Might go with them if they can make it as light or lighter than a stock buell. flywheel |
Texastechx1
| Posted on Thursday, November 27, 2008 - 05:29 pm: |
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http://www2.ahdra.com/ubbthreads/ubbthreads-5-5-1/ ubbthreads/showflat.php?Number=36983&page=15 Guy here says XB cranks will fit in sportster cases. |
Alex
| Posted on Saturday, November 29, 2008 - 10:33 am: |
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We started running an XB9 crank in our tube frame race bike some years ago. So yes, it can be done. Regards Alex M-TeK Engineering |
Phelan
| Posted on Saturday, November 29, 2008 - 10:48 am: |
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Awesome! So Alex, what did it take to fit it? |
Natexlh1000
| Posted on Saturday, November 29, 2008 - 09:16 pm: |
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Thats really cool! I just assumed that the crankcase was too different. I always thought an XB9-based tuber would be great. |
Buellistic
| Posted on Saturday, November 29, 2008 - 09:37 pm: |
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It makes for a much smoother running engine ... Wonder why they stopped making the XB9 engine ??? |
Guell
| Posted on Saturday, November 29, 2008 - 10:20 pm: |
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they didnt, its still in the city cross |
Buellistic
| Posted on Saturday, November 29, 2008 - 11:06 pm: |
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Matt: You are right again ... When "i" did not see the XB9R in the line up, "i" thought the XB9 had went by the way side ... When "i" look at the BUELL Line all "i" can see is any Model designation with "R" In BUELLing LaFayette |
Guell
| Posted on Saturday, November 29, 2008 - 11:09 pm: |
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No worries LaFayette, I thought they stopped making it too when they blacked out the frame. When are you going to make it up this way again? |
Alex
| Posted on Sunday, November 30, 2008 - 03:47 am: |
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You need to modify the sprocket shaft to accept the Timken bearings, based on the year of build of the crankcase You may have to modify the pinion race area (which is also necessary if You want to install a late style X1/M2 crank in in a case before 99 I guess) and You need to modify the engine sprocket to stop it from blocking on the shaft before reaching the spacer/Timken bearing setup as the sprocket splines of the XB shaft are a little shorter. Having a good lathe and beeing able to disassemble and reassemble a pressed crank shaft is a good thing to have for that process. Regards Alex M-Tek Engineering |
Phelan
| Posted on Sunday, November 30, 2008 - 04:29 am: |
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Alex, I'm putting you on my mental "make friends with these people!" list. I plan on building a Delphi-powered S2T next year via an EFI sporty crank, which I hear is very similar to at the shaft to the XB cranks. |
Buellsrule
| Posted on Sunday, November 30, 2008 - 09:17 am: |
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Use a S&S crank kit. Throw out the crank pin and use a Jim's 3 hole. Balance the whole assembly and you have a bullet proof bottom end that should last for years and thousands and thousands of miles. It will cost less than trying to source a XB bottom end. |
Phelan
| Posted on Sunday, November 30, 2008 - 11:09 am: |
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Very true, but the S&S kits don't have teeth on the wheels to be read by the crank positioning sensor (CKP) on the Delphi sportys. |
Buellsrule
| Posted on Sunday, November 30, 2008 - 11:27 am: |
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I thought this project was for a X1. Why the Delphi comment? |
Phelan
| Posted on Sunday, November 30, 2008 - 11:29 am: |
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Sorry, I was talking about my project that I posted in here just a few posts up. I almost forgot about the original topic LOL. |
Texastechx1
| Posted on Thursday, December 04, 2008 - 10:15 am: |
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Phelan's projects are of Frankenstein origin. but we don't judge him for that . |
Phelan
| Posted on Thursday, December 04, 2008 - 11:44 am: |
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What can I say? I'm not a doctor, but a Madman LOL. |
Jeffb
| Posted on Thursday, December 04, 2008 - 09:25 pm: |
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S&S can't build cranks with strokes less than 3.5". Sorry. Jeff |
Texastechx1
| Posted on Thursday, December 04, 2008 - 11:18 pm: |
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^^Now that sux!^^ |
Phelan
| Posted on Friday, December 05, 2008 - 12:40 am: |
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BTW Nick there is an XB9 crank in the classifieds cheap. |
Slaughter
| Posted on Friday, December 05, 2008 - 09:14 am: |
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Shoot a note to John Dahmer at Darkhorsecrankworks.com. They did my 08 flywheel/crank into my 03 XB - modified the cases and all works just nifty. He can walk you through all of your options. The XB short stroke may not work well. De-stroking your motor to give a little more RPM may be good but the XB crank might not be the answer. If it CAN be done to a Buell or HD, they can do it. http://www.darkhorsecrankworks.com He's done some really trick stuff as far as cranks for all sorts of bikes. He builds the cranks for Paul James/James Gang MotoST endurance bike and has done a TON of crank work for the tuber race bikes back in the day. (Message edited by slaughter on December 05, 2008) |
Silas_clone
| Posted on Saturday, December 06, 2008 - 11:14 am: |
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XL / Buell Timken bearing conversion $349...? When did HD bottom ends STOP using timken bearings? ...and why? |
Texastechx1
| Posted on Sunday, December 07, 2008 - 11:23 pm: |
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http://www.nrhsperformance.com/index.shtml When this build finally comes to life (many years down the road) I plan on going to these people for at least the head porting if not more. While looking through their catalog, I found that they offer a 3 5/8" stroke crank from S&S especially for tube frame Buells. 3.8125 bore x 3.625 stroke is still oversquare like I'm aiming for a more linear engine. It would be 82.77ci or 1356.3cc, which is plenty big. team that up with my stock Thunderstorm heads CNC'd out to stage 3 specs with SE536 or RedShift585 cams, Force big bore header/exhaust, bored throttle body all tuned up with ECM spy... I think I just pee'd a lil. |
Texastechx1
| Posted on Sunday, December 07, 2008 - 11:36 pm: |
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Dan Norlin's 1998 S1 lightning NRHS Stage 3 STD heads NRHS/Axtell 82" kit NRHS Custom Exhaust System Red Shift Cams S&S Super D carburetor Crane HI-4E Ignition ...I think... yep... I just soiled my self.
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Texastechx1
| Posted on Monday, December 08, 2008 - 11:20 pm: |
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I read Alex's post and I got to thinking... my crank (2002 X1) is a press on style right? is the XB9 crank the same? is it possible to swap flywheels and not the entire crank? if so, that would solve the fitment problem. (Message edited by TexasTechX1 on December 08, 2008) |