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Whosbeenfartin
| Posted on Tuesday, October 09, 2007 - 01:43 pm: |
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Bike is a 99X1 approx 16K miles. Well at this point I have done a cyl leakdown test which has confirmed that my rings are leaky, my dry compression is in the neiborhood of 100PSI I know I could rebuild my current parts its so easy to just drop a 1250 kit on the bike, and I don't want to do this more than once. With that said there are 2 choices in my price range (close to the same price actually), that I have found so far, (if there are more please tell me)? Axtell iron lined aluminum cyclinders link: http://www.nrhsperformance.com/ekitbuell1200.shtml and revolution performance nicom sprayed aluminum link: http://www.revperf.com/XL/xlPerform1200.html Which kit do people recomend, and what are the advantages/disadvanteges of iron lined vs plated aluminum cylinders in this application? I am leanining tword the plated aluminum cylinders for better cooling, and because the motorcycle industry has been going in this direction. Also, which kit do I need, I thought the bike had thunderstorm heads, but both sites advertise 2 kits for tube frame buells, one "use with lightning heads" and one "use with thunderstorm heads" So which heads does my 99 x1 lighting have? |
Bartimus
| Posted on Tuesday, October 09, 2007 - 02:10 pm: |
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You have Thunderstorm heads. I have an NRHS 1250 stage 2 kit in my '95 S2, it dyno's at 104 RWHP. It has the Axtel aluminum cylinders, and with about 10,000 miles, it's still running great. |
Whosbeenfartin
| Posted on Tuesday, October 09, 2007 - 03:01 pm: |
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Hey bartimus what other mods do you have? 104 RWHP is awesome, |
Bartimus
| Posted on Tuesday, October 09, 2007 - 05:26 pm: |
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I have a Mikuni 42mm, forcewinder intake, V&H exhaust, barnett clutch, Dyna 2000 ignition. They told me I could get better numbers with a better exhaust, I'm still using the stock headers. Aaron is VERY good at working magic with all things Vtwin, and their customer service is the best in the business, IMHO. My Dyno sheet is on their website, along with a bunch of others. (Message edited by bartimus on October 09, 2007) |
Whosbeenfartin
| Posted on Tuesday, October 09, 2007 - 06:15 pm: |
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I take it the below is yours, I wonder how much difference the head work makes? NRHS Stage 2 head work (Thunderstorm heads) NRHS 1250 kit Stock header with Vance and Hines slip-on SE .536 Cams Mikuni HSR42 carburetor Dyna 2000 Ignition |
Tattoodnscrewd
| Posted on Tuesday, October 09, 2007 - 06:31 pm: |
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Head work is way more important for making power than cylinders and pistons .. Without doing a big bore kit you can get 108hp/95ft/lbs tq at the wheel - still a 1203 cc motor ... (XB heads, XB9 pistons, Buell race exhaust, Screaming Eagle 44mm CV carb, stock lightning cams, and a Screaming Eagle Selectable curve ignition) You don't have a carb which means you can probably just throw a different map at it and possibly squeeze out 110 (at the wheel) ... A good set of heads make all the difference in the world .. just a 1250 kit will not get you that HP ... Search the archives - this is a topic talked about a ton ... (Message edited by tattoodnscrewd on October 09, 2007) |
Warlizard
| Posted on Wednesday, October 10, 2007 - 01:06 am: |
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Check out the Zippers website. They have kits available as well as headwork services. |
98s1lightning
| Posted on Wednesday, October 10, 2007 - 01:14 am: |
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Millenium 1250, AWSOME!
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Igneroid
| Posted on Wednesday, October 10, 2007 - 02:57 am: |
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Oh my Jebus! What an AWESOME bike!!!! |
Loki
| Posted on Wednesday, October 10, 2007 - 09:47 am: |
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Just a thought here..... Off the shelf parts as in the XB cyls/heads have more cooling fin area. In the open on a tuber they will shed some serious heat.{to the point of removing my oil cooler on the S1} You could use the pistons from a 9 (high comp), the pistons from a 12 (normal comp) or have the heads cut for the t-storm piston (choose a comp) just some more thinking material |
Bartimus
| Posted on Wednesday, October 10, 2007 - 11:26 pm: |
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Fartin, yes, those are my specs from the dyno. Tattood is right, the porting of the heads make a big difference. Your engine is just a big air compressor, the better it can flow air in and out, the better it works. Loki also has a good point with the XB parts, and they are off the shelf! |
Tattoodnscrewd
| Posted on Thursday, October 11, 2007 - 01:35 am: |
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I posted above as well about the gains from the off the shelf XB parts (108hp at the wheel) ... My S1 has this set-up ... although it will have a 2000-2002 lightened X1 crank assembly to go with that top end very soon. |
Whosbeenfartin
| Posted on Thursday, October 11, 2007 - 08:03 pm: |
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So what is being said here is that a tuber engine with stock XB heads and cylinders and bolt on mods (exhaust intake, retune or carb) will make 108 WHP and 95 LBS WTQ? That doesn't sound right, stock XB's with bolt ons don't make that much do they? |
Tattoodnscrewd
| Posted on Thursday, October 11, 2007 - 11:28 pm: |
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You missed the XB9 pistons ... (higher compression) ... like I said - check the archives ... tons of posts on what mods do what ... But yes ... stock case (lightning cams) with an XB top end with the Buell Race exhaust, a 44mm CV carb, selectable curve ignition has dyno'd 108 on an S3 ... Hal's in New Berlin did it ... and once I put my S1 back together it will be the same ... I am sure you could squeak out more HP by going with different cams (you would lose the nice flat curve though .. would make power higher in the revs as opposed to across nearly all rpms .. but near 110 at the wheel with stock cams IMO is more than enough for the street .. I'm as fast on my S1 as my friends are on their R6's .... With a stock carb and junk exhaust it dyno'd 98 hp and 85 tq to the ground with just the top end swap .... (Message edited by tattoodnscrewd on October 11, 2007) |
Dfbutler
| Posted on Friday, October 12, 2007 - 01:39 pm: |
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I have the rev performance set up. I had to get engine rebuilt because of a bad rod bearing so the incremental cost was less because of labor costs of getting the old cylinders machined and buying new pistons. I have not dynoed it yet, but the engine is stronger and revs more freely. I've got almost a year on the engine and probable 8K miles. Talk to the guys at rev perfect, they're knowledgeable and helpful. |
Blake
| Posted on Thursday, May 29, 2008 - 01:55 am: |
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"Axtell iron lined aluminum cyclinders link:" Those are not Axtell cylinders. They are made in China. Axtell recommends the all-aluminum cylinders with plated bores for Buells. My Revolution Performance cylinders are doing great after much abuse on road and track. Their lifetime warranty is tough to beat. |
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