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| KTM 125/144/150/200; powervalve setting | |
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| Topic Started: 15 Dec 2011, 16:01 (396 Views) | |
| rookie | 15 Dec 2011, 16:01 Post #1 |
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this is a free way to adjust when you want the power to be, got it from ktmtalk clicky here After reading a bunch of posts about the PV setting on the 200 I decided to throw my bike on my dyno and do a little research. PV_settings_5 is a pic of as delivered Z dim PV_settings_7 is a pic with the adjustment 1/2 turn of the adjuster CLOCKWISE, lowering the telltale. Note the minute amount of apparent position change of the telltales.   Now for the FUN part. Have a look at the dyno and see the difference of power delivery. A tiny movement of the setting makes a small but real difference.  for more details, do click on the link.  Edited by rookie, 15 Dec 2011, 16:44.
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| rookie | 15 Dec 2011, 16:04 Post #2 |
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  So, YES, power down low comes up, but at a HUGE detriment to overall power. OK, well thats a wrap! so guys, this is a free way to adjust when u wan ur powerband to be.
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| rookie | 15 Dec 2011, 17:18 Post #3 |
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look at my pv setting, the yellow marking is the initital marking when i got the bike in this position, theoretically, there is zero low end power, the power only comes in at mid to top u need to pin it to ride in this setting. in the orange marking, is the new marking i have set it suppose to closed partically of the power valve, thus creating abit more low end power and thus, making the bike easier ride am going to try out on this weekend to see how it goes.  for guys riding the similar bike, feel free to ask me question if u want to try it urself. 
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| reymund77 | 15 Dec 2011, 17:43 Post #4 |
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Shifu...ktm300exc got similar feature?...can teach or show me how to set/adjust?....more low end and smoothening out the power of the 300 is always welcome.... |
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| rookie | 15 Dec 2011, 18:39 Post #5 |
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there is pv adjustment on the 250/300 by using 3 different color spring to control, via spring rate also a screw adjuster for fine tuning. I have not got into that as i don't ride a 250/300 but meanwhile you can find more details from ktmtalk. |
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| rookie | 15 Dec 2011, 22:09 Post #6 |
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b4 i forget this is a very detail thread from ktmtalk, telling u how to adjust your powervalve. clicky here!!! 
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| rookie | 15 Dec 2011, 22:12 Post #7 |
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u will need a 30mm ring spanner or socket, a 8mm socket and a open end spanner to adjust.  you can use this to gauge a starting benchmark for ur bike. |
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| rookie | 15 Dec 2011, 22:22 Post #8 |
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just to give u guys some idea of my pv initial marking setting, look at the blue line. turn this cw, the marking will lower and u got more mid to top power turn ccw, the marking rises and u got more low end power. 
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| reymund77 | 16 Dec 2011, 07:43 Post #9 |
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Very nice post for all smokers....thanks.... |
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| airtime | 17 Dec 2011, 02:18 Post #10 |
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good post,rookie. i will look into dis to fine tune the bike.
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| rookie | 18 Dec 2011, 21:43 Post #11 |
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ride report for this new powervalve setting - improved low end, corner which i was using 2nd gear now can use 3rd - but somehow, mid to high is affected slightly, and shorter breath during dragging of gear have re-adjust the powervalve twice again to regain the mid - top power by lowering the marking. finally, after several rides to confirm the setting, it's now with better low end power + broad mid - top end power. |
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| Zero | 19 Dec 2011, 10:43 Post #12 |
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Rookie was so helpful that I get mine chance to learn the setting of the powervalve. Mine bike was in stock setting, which the marking was at the highest side. I couldn't even see the marking at first. This stock setting really give you a good low end power and very short breath for dragging gear change. It as a wet riding yesterday. I could not control my cornering in 2nd or 3rd gear. I always lost the rear. Only the 4th gear worked on me. I could not believe myself was doing tight turning with 4th gear but it works. I guess this must be related to the low end power. Did an adjustment to the powervalve. My ride had change significantly. I was able to took the tigth corner in 2nd gear, but I prefered in 3rd gear. This was because the shoot out of corners were more easier in 3rd gear at mid range. Don't forget it was a wet ground. One more thing that I have discover. My exhaust pipe was dry !!!! which it used to be wet... I am going to try the same setting on dry condition. I believe, I can control the bike even better. |
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| rookie | 19 Dec 2011, 12:47 Post #13 |
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good to hear tat this free adjustment of powervale actually make ur riding easier and manageable, zero. It is always gd to share techical knoeledge around riders who are really intersted in setting up and improving their ride. Am surprised to find a few pm from fellows riders who need me to help them with their powervalve setting. Looks like it has spark some interests! |
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| Zero | 19 Dec 2011, 13:36 Post #14 |
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In my opinion, Don't just focus on the pawervalve alone, the carb setting is also important. They both have to work together. Am I right rookie? |
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| rookie | 19 Dec 2011, 15:18 Post #15 |
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yes Sir!
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| airtime | 19 Dec 2011, 16:51 Post #16 |
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its was a good session doing the powervalve adjustment thing! good post n bringing dis up to our attention,rookie! but we were all so focus on all the Sxs' around dat we forgot to see if it can work on the Excs' or not.  let's wait till after the christmas holidays b4 i get Harold's exc over n start fiddling with the power valve thing!  will post the outcome out after the ride.
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| rookie | 29 Dec 2011, 21:12 Post #17 |
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the yellow arrow is the original setting when i bought the bike used. with this low setting, there is basically no low end, only with mid-top end power, lotsa clutch work. afterwhich, i decided to bring up the marking to test which setting suit me best. under this new pic  the blue arrow was the previous setting have bring up to the top orange arrow marking just to have a feel, and in this setting, it got much better low end torque, corner which i used 2nd gear previously now can use 3rd with minimal clutch works. the red arrow is at my current setting, with just enough low end torque and just as good mid-top end power. hope this helps. just to take note, this is from a 150sx. |
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| airtime | 6 Jan 2012, 12:51 Post #18 |
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well, we did a test session after work was done on Harold's cylinder. power was great but with the power valve adjustments we were able to fine tune the power delivery to suit the rider preference. again thanks to the guru who brought dis up! Harold will buy u coffee!
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