| Author | Message | ||
     Valleyracing |
 | ||
| Firemanjim |
For those of us with bad eyes--what are the #'s? | ||
| Valleyracing |
before 80hp/66tq after 95hp /100tq i'm trying to send better pic. | ||
| Valleyracing |
 sorry,theres a better pic | ||
| Buell2001b |
I am clueless. I guess this shows you did somehting to a bike to improve its performance! if so what model and what did you do to it. | ||
| Cruisin |
I know! I know! I'm guessing by the post title that this is for the Nallin's 1420 big bore kit for the XB's! I like that nice big peak of power down in the low end...Gotta start savin' my pennies! (Message edited by CruiSin on March 21, 2005) | ||
| Jerseyguy |
Is the 12.6 A/F ratio the reading at 4000 RPM or is it an average that just got printed on the 4k graph line? That's a lambda of about .86 which is good for power. That little wiggle in the A/F line corresponds to the dip in the curves above. I'm guessing some fine tuning of the map could help flatten them out. | ||
| 99buellx1 |
From reading the dyno sheet. 2003 XB9R 1420cc Force Exhaust K&N Techlusion | ||
| Ingemar |
I think he put a 12 crank in a 9. The rev limit for the 2nd run is down to 6800. That's a nice A/F ratio graph. Actually one of the flattest I've seen. See what's possible with a techlusion. | ||
| Newfie_buell |
Don't take this the wrong way but I have seen dyno sheets posted here and on other websites with the 1250 kits and higher HP. I would have thought that the 1420 kit would have yielded more power. Is there something holding the motor back? | ||
| Ingemar |
I'd say it's by design. Just see how the hp peaks and falls back after 4000. Clearly not tuned for high hp numbers. | ||
| M1combat |
I think it's the Force pipe. I think the header tubes are too small for that much displacement at that RPM range. | ||
| Spiderman |
No the header tubes are fine, I went down a 1/4 inch in my header pipes and it works great, Decreasing the header diameter can increase gas velocity. I am kinda confused by a 1420 only makin 95 I have 93 with stock displacement, and XB heads and XB12 pistons. With the 536 cams I just put in I should top that 95 no prob. | ||
| M1combat |
I know they'll increase velocity at lower RPM's, but in the upper range you need to be able to flow volume... The force pipe is already tuned for a 984, so going to 1420 may be too much flow at the upper RPM's for the header diameter... Just my 2c though  ... YMMV . | ||
| Tim |
How does STD HP compare to SAE? | ||
| Court |
>>>>I am clueless. Finally.....the truth comes out. I'd pretty well picked up on the clues. | ||
| Wyckedflesh |
That dyno is showing a 15hp gain and a 45ftlb torque increase. That is one hell of a steep torque curve. I myself would be VERY happy with that. | ||
| M1combat |
My apologies... I was looking at that graph completely wrong. | ||
| Ingemar |
Duh ... that's what I said all along. It's not tuned for ponies [but for torque] .  Just raggin' on ya M1 ..  | ||
| Valleyracing |
sorry for not leaving info, STOCK XB9 BASE RUN,THEN INSTALLED 1420cc,NALIN BIG BORE, STOCK HEADS,& CAMS,XB12 CRANKSHAFT AND THROTTLE BODY, K&N FILTER, TECLUSION FI. HAVING A BAD STUMBLE @ 4000-5000 RPM CRUISING,WOT IT PULLS RIGHT THROUGH IT. GOING TO TRY PC TO SEE WHAT WE CAN GET OUT OF IT. I'LL LET YOU KNOW. | ||
| Cataract2 |
So, how does 100 ft-lbs of torque feel? | ||
| Cruisin |
Hmmm...I'd imagine something like this:  | ||
| Ingemar |
Hey is that Michael Jackson on the front row? | ||
| X1tx |
Nah. Still has a nose.........  | ||
| Cataract2 |
Hmmm, if that's what 100 ft-lbs of torque feels like. I wanna ride that bike. | ||
| Bud |
it is really sick how fast a 1420 xb is my mate ( xb1420 ) pulled away from me ( xb9- bigbored 12 ) like i was driving a moped | ||
| Noface |
I have a buddy with a 1203cc X1 that does the same thing. More or less a copy of Aaron's M2. Well over a hundred at the rear. Amazing how fast he can walk away from me doing a roll-on. | ||
| Blake |
Yeah, I keep telling Aaron that he needs to try riding that beast down near sea level. He takes such a power hit up there in the thin mountain air that he doesn't really know what a beast that bike is to ride. I've ridden 130 rwhp Buells at near sea level; that was a serious wake-up call concerning throttle control. | ||
| Richieg150 |
I must be missing something.If I'm reading the dyno sheet correctly,the bike went from 80.8 to 95.5 RWH,and 66.8 to 100.8 on torque.I was thinking the RWH should have been 120+ with that set up.You will get more RWH than that with a NHRS 1250 kit.So,my question is why is it so low on RWH? | ||
| Valleyracing |
 this bike only has a pipe and big bore kit. no head work ,not even a valve job. stock cams just the xb12 throttle body ,force pipe, k&n. 50lb more torqe & 20 hp @ 4000 hang on!!!!!  |
