| Author | Message | ||
     Wickedx1 |
Hey guys, I posted my dyno graph in the dyno section. Check it out. http://www.badweatherbikers.com/buell/messages/384 2/296058.html?1185714390 I'm looking for more power. Anyone think this is higher than it should be with the mods listed? Think it might have cams too? I don't know the original owner and the guy IU bought it from doesnt knwo if there was anything else done to it other than the mods listed. Thanks. | ||
| Kyrocket |
I'm with Charlie, that sounds pretty high. When I dynoed mine there were about five other Buells and we were all within two HP of each other. Mine was 83.something with similar mods as yours. I'm assuming that is at the rear wheel. 15 HP sounds like quite a bit, but hey, if it is, it is. I hope you are running that but IMO it sounds a little high. There's another thread on here, I think it's the HP numbers are in and he's running in the 80's also. Michael | ||
| Wickedx1 |
Michael, Interesting. Were you guys dynoing on a dynojet? | ||
| Kyrocket |
I honestly have no idea. It was a trailer dyno at Chillicothe Ohio a few years back, maybe '02 or '03. The guy operating it kept a dry erase board with the days runs on it, that's how I knew about the other Buells. He claims they were running similar mods so I can't verify that, they could have been bone stock as far as I know. I still have my graph tacked up in the garage somewhere, I'll try to dig it out and compare it to yours and see if it has anything on it brand wise, I'll try and post it to. | ||
| Tattoodnscrewd |
Those numbers are very high... Have heard that the trailer dyno's are a bit generous with the HP numbers ... I am also basing it off the fact that my S1 - while still carb'd - only put down 97rwhp - and it's top end is definitely not stock .. (see my dyno info and mods - http://www.badweatherbikers.com/buell/messages/476 23/282881.html?1181924405) The only way a stock X1, even with the race kit minus air cleaner, would have that much HP is with a Power Commander ... (I know someone with an Fuel Injected S3 that is putting a few more ponies down than my S1 and all he has is a Race Kit and Power Commander) I wouldn't put a lot of stock in the trailer dyno's as far as actual numbers ... but what it will give you is an idea of is whether or not you have a decent, smooth power and torque curve as those should ultimately be the same just more than likely with lower numbers on a proper dyno setup. | ||
| Wickedx1 |
Yeah, trust me, I've used the dyno many times...including the one we have at work. Unless you're all dynoing on the same day, you really can't compare the two graphs. I mainly wanted to make sure my power was there since my trip to the strip was a little disappointing. But I also wanted a baseline for when I make the bigger mods...like cams, head work, and 1250 kit. | ||
| Scott_in_nh |
What kind of numbers did you get at the strip? Dyno's are GREAT for tuning, but do not really tell you what your "real world" performance will be (having a lot of dyno time I know you know this). This is true partially because they have such a huge variation dyno to dyno, and secondly because the dynamics of a moving vehicle, gear changes and chassis dynamics are not included. You can google for a "1/4 mile HP converter" and calculate your actual HP based on et or speed. Try both - use speed if you were having trouble launching it because a poor launch greatly effects et but only mildly effects mph. You will need to know the gross weight of you and the bike together. I am sure your bike is making good power, and no slight intended at all, but you are not putting down 98HP. As Tattood said you might get close with some serious time put into re-mapping the ecm, but out of the box - IMO no way! | ||
| Tattoodnscrewd |
I wasn't showing the graph to use as a comparison .. the two bikes are totally different .. and so are the dyno's ... I only pointed to it to show how there is honestly no way a stock X1 with the add-ons you have is putting down 98rwhp/83rwtq when a high compression, much better breathing setup with about 4 hours of dyno-tuning is putting basically the same numbers down ... At best- I would guess your bike is actually putting down closer to high 80's/very low 90's tops for hp - and based on your disappointment at the track that's probably an accurate guess (I'm honestly not trying to get in a whose bike has more power debate .. just letting you know those numbers are very high with what you have .. also probably wouldn't trust those as an accurate baseline, unless you use the same exact Dyno when you are done with your build - even then I would only consider the percentage of improvement accurate, and not necessarily the actual HP/TQ numbers put down) I would be curious like Scott, in what your 1/4 mile numbers were .. a Buell putting down nearly 100hp with a perfect run (in street trim - no bars/straps or nothing) will run maybe a high 11 - but more than likely a low to mid 12 sec 1/4 mile ... and will probably run between 110-120mph ... (Scott - correct me if I'm wrong) (Message edited by tattoodnscrewd on July 31, 2007) | ||
| Wile_ecoyote |
So what do you think an X1 is putting out at the crank with those mods? I say about 10 less than a true rear wheel dyno. Of course I'd like to get more hp but the torque figure is more important to me. | ||
| Scott_in_nh |
stock 99 S3 with race ecm, K&N and Borla slip on - I got 11.80's to 11.90's at 110 to 113 mph. add a $30 front end strap and a few more runs under my belt and my best is 11.66 at 114+. I think I can get into the 11.5's on a good night if the rider would stop holding the bike back ;) My guess would be that 98 RWHP would get me low 11's at 117 to 120mph | ||
| Tattoodnscrewd |
Just a guess ... but I'd say crank HP would be around 110hp at best(stock being 101hp I think) with the driveline losses that would put it somewhere in the 80's (probably mid to high 80's at best) for true rwhp... | ||
| Wile_ecoyote |
I didnt realize the drive train sucked up that much HP. I have a GSXR with 149 rwhp but the torque is only 85. You really gotta crank it up to get that out of it. Thats why I love the Buell so much. Its incredibly easy to reach the torque. Finding myself riding the Buell more often then anything else in my "harem". Just proves once again, Erik knows what he's doing! | ||
| Oldog |
Wicked: I have stock and modded pulls in the KV for my bike, it runs quite well and the MAX hp on any run was 87 I have to also agree with the consensus your dyno reading seems a little high for what ever reason. the fully stock bike made a max of about 85 hp. I have not made a pull with the RACE ECM, to see if there was an improvement. | ||
| Wickedx1 |
Thanks to everyone for the friendly inputs. I just want to make sure everyone understands, I understand the dyno is only a measurement device that has a certain accuracy and may not be in calibration. My original post was entitled, does it seem high and could it be possible that it has more doen to it then I know. I respect that some of you have vast experience with these bikes and I am still learning. Again thanks. Now can someone answer my question... If I do the 1250 kit...how much power would I expect to gain from straighter cylinders and better, lighter pistons? | ||
| Tattoodnscrewd |
Wicked - take a look here .. lots of examples with all different set-ups .. http://www.nrhsperformance.com/dynoroom.shtml .. it will show you all you'll need to know... and then some ! | ||
| Tattoodnscrewd |
I just read through those examples I gave you the link for to NRHS's website .. and it seems like the average HP is about 105rwhp with a 1250 kit - higher and lower based on the head work and cams ... unless you spend a ton more money and jump to an 88" or higher to get about 120rwhp or more ... You might want to take a 2nd look at the link I posted above to my thread regarding my setup ... No - it's not the best you can do - but it's all bolt-on, WAYY cheaper than the 1250 and stage 2 head work and cams, is reliable and streetable - running on pump gas ... and it's been proven to yield a true 108rwhp (add cams and it *could* be higher - 108 is with stock lightning cams) .. (my hp is lower due to the carb and exhaust -- like I said take a look at that thread .. if anything it gives you a different option to look at .. ) That old saying - no replacement for displacement isn't necessarily true IMO .. (Message edited by tattoodnscrewd on August 01, 2007) | ||
| Wickedx1 |
Hey tattooed. I know they say there the heads on the XB's arfe better but I think thats mainly due to valve stem being smaller for weight and haviung better valve springs. Dunno if they flow better. And you were going from S1 equipment to XB stuff. If I would do what you did(assuming I'm actually making high 80's or low 90's hp) I'd maybe get 5-7 hp? Dunno if its worth it. I'd rather port my heads and maybe try better springs and cams. I dunno, still looking at all my options. And thanks for the link...but I've already been looking at the NRHS site a lot. | ||
| Tattoodnscrewd |
That's why I brought the XB setup - gives another option to look at .. The XB heads actually do flow better..(according to the guy's at Hal's and the Buell driveline engineer who helped with my bike).. I guess they tried to do porting and what not on the t-storm heads and stock lightning heads and could not make them flow any better than the XB heads do out of the box.. Give Terry G. a call over at Hal's in New Berlin - he'll be able to answer ANY question you would have and help get you going in the direction that will best help you achieve what you want ... 262 860-2060 You'd actually gain a lot more than 5-7 hp with the XB setup - your bike stock came with 10hp more than mine - so to do ONLY what I did - you'd gain 10+hp -- add the better exhaust (which I don't have on the bike - but you do) and a proper tune and you'd gain as much as 15-20hp The benefit you have though with an F.I.'d bike as opposed to carb'd is that if you can get your hands on a P.C. you'd do even better yet ... you could probably see over 110rwhp - and run it on pump gas ... (more than most of the 1250 kits put down - and still cheaper) Just more stuff to chew on .... | ||
| Wickedx1 |
That's starting to sound good. I'll do some research on the XB heads and see what I can learn. That sounds like a good plan and 110whp was my goal. Thanks man. |
