Torque and RWHP
#12
01-25-2009, 07:55 PM
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HD dealer told me my stock 2007/883 0nly had around 45/47 pony's from the block. Don't know what rear wheel was. I have a 1981 650 midnight maxim in line four that puts out 64 HP out of the box, but the motor would do 14000 RPM with no rev.line limit. It did go to 16000 if I missed a gear. It's a shaft drive, but could take the front end off the ground in all but last gear. 120+ If you really need the numbers, I would get a hold of HD. I'm sure they will help you out to give you what you want. Best of luck, keep it in the wind................
HOLLYWOOD
HOLLYWOOD
#13
01-25-2009, 08:16 PM
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"The XL Evolution 883 engine is rated at 53 peak horsepower at 6000 rpm and 51 ft. lbs. of torque at 4300 rpm. The XL Evolution 1200 engine is rated at 70 peak horsepower at 6000 rpm and 79 ft. lbs. of torque at 3500 rpm, an increase of more than 15 percent over the previous XL Evolution 1200 engine."
Of course these figures are taken at the 'crank', and not the 'rear wheel'..
As I mentioned in a earlier post to this thread, a dyno test of a stock 883 showed 44.8 rear wheel horsepower, and 48.5 pounds of torque to the rear wheel.
#14
01-25-2009, 08:19 PM
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Crapshooter, please look at my sig. All equipment listed was on the bike when dynoed. My take on it is the bike runs way better than the dyno run reflects, and it only has 3k miles on it, not yet broke in.
I don't think I will even dyno again. I do realize that Dynos provide baseline information, if you use the same dyno, but there is really no where I can go now with mods excepting to make it a 1200 which at this point I am not inclined to do so. I realize I could put cams in it but seriously doubt it is worth the money per horsepower gained. All I really wanted to do was make it a sweet running 883 and I think I've achieved that.
You see, it is so much easier to get HP out of, well like my truck. 2001 Dodge Cummins 5.9L turbo diesel. When I bought it, flywheel HP was 235 and I now put out slightly over 500 hp at the rear wheels with a 1020 lbs of torque. The point I am trying to make is, the fueling box alone on my truck is worth 180hp. HP per dollar is so much cheaper on my truck as opposed to my bike.
I don't think I will even dyno again. I do realize that Dynos provide baseline information, if you use the same dyno, but there is really no where I can go now with mods excepting to make it a 1200 which at this point I am not inclined to do so. I realize I could put cams in it but seriously doubt it is worth the money per horsepower gained. All I really wanted to do was make it a sweet running 883 and I think I've achieved that.
You see, it is so much easier to get HP out of, well like my truck. 2001 Dodge Cummins 5.9L turbo diesel. When I bought it, flywheel HP was 235 and I now put out slightly over 500 hp at the rear wheels with a 1020 lbs of torque. The point I am trying to make is, the fueling box alone on my truck is worth 180hp. HP per dollar is so much cheaper on my truck as opposed to my bike.
#15
01-25-2009, 08:45 PM
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#16
01-25-2009, 10:42 PM
Another thing to consider, though i'm sure if it's a dealer, they did it this way, is the gear in which that pull was performed. 5th gear, i'm told, is the closest to a 1-1 ratio, and therefore the gear in which they measure peak hp and tq. My nightster (an 08 with SEAC, SERT, and short shots makes 89 hp and 91 lb ft of tq, i don't have the sheet in front of me but that was the 5th gear pull. I also understand that they tune it in 4th gear. It's possible that any variation there could explain the lack of expected power.
#17
01-26-2009, 07:04 PM
89 HP with a SE aircleaner and short shots, your dealer is pullin your (you know what).
That bike makes 75-80 at best if you had a good exhaust system, I caught my dealer doing the same crap to me, I had a dyno tune done on my RK and the numbers they gave me where for a 103 stage II kit, it was completely bogus.
Your bike isn't making 89HP unless you left out something really big like you have ported heads and a pretty hefty cam and a real good 2-1 exhaust system.
That bike makes 75-80 at best if you had a good exhaust system, I caught my dealer doing the same crap to me, I had a dyno tune done on my RK and the numbers they gave me where for a 103 stage II kit, it was completely bogus.
Your bike isn't making 89HP unless you left out something really big like you have ported heads and a pretty hefty cam and a real good 2-1 exhaust system.
#18
01-26-2009, 07:41 PM
89 HP with a SE aircleaner and short shots, your dealer is pullin your (you know what).
That bike makes 75-80 at best if you had a good exhaust system, I caught my dealer doing the same crap to me, I had a dyno tune done on my RK and the numbers they gave me where for a 103 stage II kit, it was completely bogus.
Your bike isn't making 89HP unless you left out something really big like you have ported heads and a pretty hefty cam and a real good 2-1 exhaust system.
That bike makes 75-80 at best if you had a good exhaust system, I caught my dealer doing the same crap to me, I had a dyno tune done on my RK and the numbers they gave me where for a 103 stage II kit, it was completely bogus.
Your bike isn't making 89HP unless you left out something really big like you have ported heads and a pretty hefty cam and a real good 2-1 exhaust system.
#19
01-26-2009, 08:23 PM
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Please elaborate on this one. For the longest time people would say you would get more horsepower and torque by switching counter gears or in our case pulleys and that's a myth too. Sure, there's a mechanical advantage to lower gears but that engine will only change where the torque and horsepower come in and fall off. Regardless of the gear or gearing they will still be the same when rpm hits 5252.
#20
01-26-2009, 09:22 PM