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View Full Version : 1200R Stage 1 - Dyno Results


DirtDevil
28th January 2006, 02:48
Hey all - haven't posted in a long while, been busy with work and some other stuff. Did my own work on my Stage 1 about 750 miles ago, things went well and bike feels good. Finally got around to having the bike put on the dyno for the official look. Results look good to me, nothing earth shattering but it looks to be dialed in pretty well. My main interest here is that my tuning is correct (45 slow jet, 180 main jet, 2 washers under needle, air mix screw at 2.5 turns out). Interested in any comments here from the experts.

Arlen Ness Big Sucker A/C and Screamin Eagle II mufflers.

One run in 5th gear (upper lines) and one run in 4th gear (lower lines).

What do you all think? Link here --> http://home.earthlink.net/~bc000/public/dyno_low_res.jpg

greanmeany1
28th January 2006, 03:06
looks good, my set up is almost the same,CS in place of SE

Turbota
28th January 2006, 03:07
70 rwhp ... That's about right for a stage 1. (a pull in 5th gear will always yield higher HP numbers vs 4th gear)

Pretty nice AFR too. If you change anything, go to a 175 Main. You start to get rich in the high revs.

Thanks for sharing

05sportyr
28th January 2006, 13:10
i have similar set up to you

sucker cs tapered

i originally had 45 slow 1 shim on needle 180 main about 2.75 turns on screw

original dyno numbers almost same

changed to 48 slow picked up almost 5 horse and tourqe

final number just under 76 horse and 80 tq

i relizixe dynos can read diffrent so actual number arnt as important as what you actally pick up or lose during dyno tuning session

xl1200r
28th January 2006, 20:10
I'd also switch to a 175 main...that's what mine was at with the SEII's. Otherwise your A/F is spot on. Mine also had a 46 slow, but that was more for carb farts (i had a full yosh kit sntalled, so the throttle opens a little faster than it should at slow rpms).

Like others said, dynos all read a little different, but the all the curves look good.

Shift_4lo
7th February 2006, 22:54
That looks Pretty good BTW how do i adjust the mixture screw.
Thanks Daniel

shotgun46
7th February 2006, 22:57
i would be happy with them numbers ! some day my 883 could run like that !for now i just want to change the breather and re jet ! to go with my loud drag pipes !!

Shu
7th February 2006, 23:13
That looks Pretty good BTW how do i adjust the mixture screw.
Thanks Daniel

Look under your carb and find the air mixture screw. If you have re-jetted your carb for stage one, the plug should be removed from covering the screw.
http://xlforum.net/photopost/data/500/carb_bottom.jpeg
Then follow the instructions in this link http://www.xlforum.net/vbportal/forums/showthread.php?t=4465&highlight=jetting

Shift_4lo
8th February 2006, 01:17
Look under your carb and find the air mixture screw. If you have re-jetted your carb for stage one, the plug should be removed from covering the screw.
http://xlforum.net/photopost/data/500/carb_bottom.jpeg
Then follow the instructions in this link http://www.xlforum.net/vbportal/forums/showthread.php?t=4465&highlight=jetting
Thanks for that i will try it friday and i am sure i will be having a lot of question after i screw it up/:doh