Ordered FMF Gnarly, Suggestions appreciated

[Danger4u2]

I ordered a FMF Gnarly pipe, e-line Kevlar pipe protector, and the Power Core Silencer. Any suggestions as far as what I should do before they get to the house? Jetting suggestions? FMF offers jetting suggestions, but I thought members might have the real world scoop on my stock '04' K5.


Thanks,

              Danger

[alan]

I have one! I think for the desert they are the best! I am not sure what jetting changes I made for the pipe, because I also installed a reed spacer at the same time!

Alan

[Danger4u2]

I have one! I think for the desert they are the best! I am not sure what jetting changes I made for the pipe, because I also installed a reed spacer at the same time!

Alan

What does the reed spacer do? I know it moves the reeds back, but what does it do physically to make more horse power. What reeds are you running?
Thanks
Danger

[Timbowe]

Reed spacer shifts the torque lower down the rev range. You do lose a little of the top end, but with a 500 thats no biggie anyway. The broad spread of power certainly makes up for the top end loss. I run mine spacer with a Vforce cage and Gnarly with power core also. Only 1 size up from standard main. I also run a Irridium NGK plug and decent fuel mix [Good syn oil]. For me this is 1 sweet set up. Both my kX's have run this combo. It really makes a very good engine so much better.

[KXcam22]

As I understand it, a reed spacer pulls the tips of the reeds back out of the transfer port flow which reduces turbulence (at the reed tip) and increases flow at low rpms. The increase of the intake volume could also have some effect.  Timbowe's setup is just about optimum for the KX. Mine is almost the same except I am running the Boysen dual-stage reeds. I agree, it really does make a very good engine better. Cam.

[alan]

You guys could do a search on reed spacers in the forum. We have beat this topic to death! The bottom line is that it is the single best mod you can do with the lowest cost and the most benefits! It does change the torque curve, you can ride 1 gear higher without fowling plugs or bogging down! I just simply couldn't believe what a difference it makes!

Alan

[Danger4u2]

Thanks for your replies, and thanks for any more info someone might submit. Looks like reed spacer is next. UPS just got here with my Gnarly pipe and Power Core. I'm not going to install the pipe until eline pipe protector arrives, all ready have dent in stock pipe.

Thanks again,

Danger

[barryadam]

I've tried several searches and read a BUNCH of posts, but don't see anything difinitive on the best thickness to make the reed spacer.  I've seen 10mm, and 1/2" raw material call-outs.  Anyone actually measure Moose's thickness?  Does it make any real diference other than a bit less cramped for the carb/airbox boot?

B

[hughes]

I made mine out of 3/8 alumn. flat stock. Moose is 10mm which is close enough to 3/8.

[KXcam22]

Hughes is right. The moose is 10mm (3/8"). I built a 1/2" one and it is marginally too thick to fit on. Mine barely fits on - the carb almost hits the frame. From experience I would suggest no bigger than 3/8". Cam.