fmf fatty jetting

[jr3]

Hi i just got a fmf fatty and powercore 2 and i just have a ready filter on it. its for my girlfriends blaster what are some of your guys jetting specs i plan to leave the airbox lid on and just run a ready filter. i talked to a guy at work he said he had a k and n and left the airbox lid on and just moved the needle downa clip and ran great.


any help appreciated

thanks James

 

[samolia]

#1 tell your buddy at work hes stupid.
#2 buy a bunch of jets like 250-300 and start at 300 and work your way down untill it sounds like its running good then do a plug chop and then readjust your jetting from there...

i hope this helps

 

[4cfed]

im running astock style filter, no air box lide, full fmf ehxaust, im running a270 jet and runs good and strong..

 

[samolia]

im running astock style filter, no air box lide, full fmf ehxaust, im running a270 jet and runs good and strong..

if i had an exhaust i would have known that haha so yeah get a 260, 270, and a 280 jet just because every quad is different better safe then sorry....

 

[4cfed]

if i had an exhaust i would have known that haha so yeah get a 260, 270, and a 280 jet just because every quad is different better safe then sorry....

exactly, some guys with the same mods as me are running 250s and 260s and some are runing 280s... i put the 270 in first and thats where it sits

 

[specialized7]

hmm, i have a similiar question, i put my fatty on, but didnt start the quad yet because i need to go grab some jets.i did a plug chop and its a little rich but thats ok
stock jet is in it right now, but all that i have on there is reeds and the pipe, oh and a k&n and open airbox.
should i grab a 260 and a 270?

 

[jr3]

I guess a plug chop is a 2 stroke thing? is it like on a 4 stroke u mean just take the plug out after it runs and look at it or is a plug chop something diffrent

 

[specialized7]

nope your spot on

 

[ERBE]

BLASTER JETTING SPECS
Blaster FMF Pipe
Main Jet 260-280
Pilot 35
(stock Banshee Needle) / 4th clip
Air screw 1 1/2 to 2 turns
Remove Snorkel From Air Box

 

[underpsi]

I just put a fatty and powercore on my blaster, it also has a uni filter. The jetting is completely stock and I also have a set of v-force reeds to go in. Can I put them in without adjusing the jetting or am i pushing it now? Thanks guys this is my first post been reading for awhile

 

[specialized7]

yea i would up the jet, i jetted mine today, put a 270 in runs good, but i can tell its a little rich im gonna go down to a 260

 

[NOVIS]

where did you get the jets from. im gonna get the fatty pipe and im gonna try a 270 jet.

 

[ATrain666]

i have the fmf fatty pipe and powercore 2 silencer also. I have boyeson power reeds in mine and a foam stock tyle air filter with the airbox lid removed. I am running a 260 main jet with the needle on the 4th clip. a 32.5 pilot jet and the airscrew 1 1/2 turns out.

 

[Jmb1983]

I have same setup..

270 main
35 pilot
3rd clip on needle
No air lid

Rips

 

[Blaaster]

I have same setup..

270 main
35 pilot
3rd clip on needle
No air lid

Rips

You need to plug chop to confirm your jetting, #270 seems too lean if you have the air box lid off!