Hello to all. I recently purchased a fmf turnine core 2 silencer and added it to my fmf fatty pipe coupled with boyesen power reeds. Needless to say it is time to rejet. I was wondering if anybody knew of a complete jet kit that would work for my 96 kx250.
Jetting for each individual situation is different. Although "jet kits" are available, the jetting for your bike will need to be tailored based on numerous different variables. The change in pipe is one, the engine mods are another, the new reeds can have an effect. If you add a rad valve, that will have an effect. The altitude of the area in which your riding, and other environmental variables will effect the jetting. What I'm trying to say is that there are no plug and play jettingsolutions. It's a trail and error, ride and adjust process. There are guides available on the internet to help you. Do a search on "spankys jetting guide" and you'll find a good reference.
Also would a new rad valve make that much of a difference over my current stock one? Also there seems to be some kind of plastic triangular block in the rad valve. What does it do? DO i need? Will it increase performance and air flow if i remove it? I thank you in advance for your replies as I find your advice very useful. Thanks
I had a RAD valve on another bike I owned and it made a huge difference across the powerband, and definitely increased the low end. If you use one, use the entire unit, all the parts. I can't describe in detail what each parts is designed to accomplish, but as a package it is a great performance add-on. You may also want to look at porting as an option for increased power and performance. There are lots of good companies out there who can hook you up. I use moto814 (
www.moto814.com). I hope this helps.
