Power valve springs / torque

[KTMdave]

Hay guys,
Im looking for some info on power valve springs. I know about the red, green and yellow springs but in my 06 ktm exc it is a white spring and I can't find any info on it. ( or is the paint worn off). I'm looking to get more low down torque.
If anyone has any suggestions on pv springs or help to get more low torque it will be much appreciated.

Thanks, Dave

[bajadog]

Dave,

See if this post helps.

http://www.ktmforums.com/forums/two-...e-springs.html

[KTMdave]

Thanks Bajadog,
It helped but I will be posting more info I found on another site so we can share the info.

[slothman]

Originally Posted by KTMdave

Hay guys,
Im looking for some info on power valve springs. I know about the red, green and yellow springs but in my 06 ktm exc it is a white spring and I can't find any info on it. ( or is the paint worn off). I'm looking to get more low down torque.
If anyone has any suggestions on pv springs or help to get more low torque it will be much appreciated.

Thanks, Dave

I am in the same boat. I am also looking for more low end torque.

I think you should also look into swapping the rear sprocket. If you add 1-2 teeth you will gain low end torque, but you will lose some top end.

[KTMdave]

Thanks for the help,
I might try the bigger rear sproket,
thanks for that idea,

But to share something I found some info on another site and thought I should post it. Hope it can help other ktm riders.

There are 3 springs that should come with bike
*
Red
Yellow(stock)
Green
*
But you can also*get*
*
Blue
White

"These effect at what rev the power valve fully opens.
*
Green*= PV Opens @ 5,500 rpm ; PV is fully open @ 8,300 rpm.
Yellow*= PV Opens @ 5,500 rpm ; PV is fully open @ 7,800 rpm.
Red**** = PV Opens @ 5,500 rpm ; PV is fully open @ 7,300 rpm.
*
Inner springs:
red 1.1mm, 54837072000
blue 1.2mm, 54637072500
yellow 1.3mm, 54637072300
white (I think) 1.4mm, 50333056000
green 1.5mm, 54837072100

But still no help on the white spring

I also read that adjusting the screw can change when the pv opens.
Factory settings say it should be flush.
I haven't played with it yet


I hope this helps
Dave

[Over 40 Rider]

I was also looking for more low end torque on my 02 300. I nstalled the RED spring and ran the dolly screw all the way out flush with the case. I also changed my rear sprocket out from a 49 to a 52, lower end torque is no longer a problem for me.