125-200cc 125/144 Power valve Governor springs

Just an FYI. The kits are up on Hall's Cycle's web site. They are listed under Husqvarna Accessories- Engine.

Walt

i just ordered one for me
thanks

Just got the kit today. I will wait until I get down south on 20th or so to test the stock setup and the new 144 kit. Then install the lightest spring and go from there.

But...when I installed the power valve linkage 3 months had pass and could not recall how it went back in. I thought I had it correctly back together but from the pictures in the kit I'm not sure anymore

Anyone have a good picture of the top of the powervalve linkage?

Gestion01,

Do you need a picture of the upper linkage and spring attachment? When the governor is in and the linkage shaft is in the correct place the flat sides will line up with the head of the front motor mount bolt.

I will try to take a pic and post it tomorrow.

Walt

The second picture is right on! very,very clean pics.

Thanks Motosportz!

I did put it back together ok after all. I don't get the use of the spring on the linkage...why not just bolt it right up instead. What purpose does it have?

It allows the linkage to move more than the limited range of the power valves themselves. This keeps the power valves from wearing in the pin area and closing or opening to far with catastrophic results.

Walt

Ok, makes sense now.

It's almost like owning a new bike, can't wait to test all these goodies out.

I have only 2 runs up and down the street with the 144. I hate winter!

Matt,

All I can say is "WOW" thanks for doing that for the guys. I really wish I had a dyno so that I could put curves to your charts. Maybe Husky will donate some time on the Dyno that is in Missoula so that I can get some real world figures for everybody with the OEM 144 kit. Hint Hint Hint if anyone is listening.

Walt

I ordered my today from Hall. So if I want alot more bottom end than stock on my 2008 cr125 I would want powervalve to close longer or until more rpms are higher or is it other way around. Looks like large yellow with small silver would help mid range. Thanks for all the work you guys have put into this. I can t wait to try them out and for snow to go away.

Pedec,

The weaker the spring the earlier the power valves open. It really isn't going to effect your bottom end. It will give you a large mid-range rip if you lower the opening rpm. The inner springs just modulate how fast they open completely. So if you are running just a weaker outer spring you will see the same abrupt opening of the PV's that you have now just at a lower rpm = longer pull. If you use the inner springs you get a more controlled surge earlier in the rpm range and the largest rip higher up close to where it rips currently.

Kevin in Boise who installed the kit in his 04 CR 125 described it like he had two powerbands. The initial opening with a mid-range surge and then another hit at where the pv's open completely at a higher rpm. I have been really curious about the results in the pre-09 125's considering there different carb's/reed valves/porting.

Keep us informed as the kit can always be adjusted with different inner springs. I am currently trying to get another inner spring made that will be a half way point between the silver spring and no inner spring. This will be a custom spring and I haven't got a quote back on costs yet. The blue inner spring is mostly there to give you the ability to micro adjust your opening rpm. The small amount that it modulates the opening speed is kind of irrelevant in a fast revving 125.

Walt

I for one would love to know what the HP/Tq numbers are for a stock CR125 vs the EG 144 kit. Then throw on some Walt springs and see how the curves mover around.

My 2000 wr 125 it´s the same to kelly photos

I know Colorado is a long way from Montana, but I will offer up my shop and dyno for your spring testing if you want to make the trip

Hidden agenda: Id like the ride a WR125/144, then maybe Id get one

My shop address:

3455 Fillmore Ridge Hts
Colorado Springs, CO 80907

Nothing?

I want to get one of these kits for my WR250, and you'd be more than welcome to try it out on your dyno. I know it's a 125, I've not seen anyone in CO post up that has a 125. Brad.

I would like to see some dyno charts showing PV fully open vs PV fully closed.
Then choosing the best spring combo to bridge the gap

Sorry Kleeman,

I haven't been monitering the thread enough. I would love to combine my 144 with your dyno and the springs. The best thing I could do is have both the Eric gore cylinder and the OEM 144 cylinder with maps for both with all the different spring combinations.

I will look for some way to make it happen.

I am willing to donate a WR 250 spring kit if you can get one in your area to try the springs on your dyno.

Walt