stock jets = jd jets

[Chris525]

Hey guys I have the 525 irs I know I need to rejet
and because of ALL of your guys recommendations I
wouldnt think of going with anything but JD
but I recently found out that the jd kit is oem jets
and two custom needles for elavation and temps.
I dont ride in any crazy elevations or temps
Are the oem jets in my carb right now adjustable
to richen the mix?

[realbadlarry]

You can rejet and use your stock needle, a lot of the hype with JD is his needles, which are tapered to work with the specific bike/quad and the riding you do. I think you can get away with just going up on the stock main and pilot and playing with the needle position, but the JD seems to get you more spot on the first time. If you have the $$$ it's the way to go. You can go to a lot of sites and search for jetting info. Thumpertalk.com has tons, it will edumacate you on carb tuning. Good luck.

[Chris525]

I've messed around with a bunch of different stuff
but never the inside of a carb
Anybody have any desriptions or better yet
pictures of upping the main and the pilot
and changing the clip position on the needle

[LT250_JOE]

Originally posted by Chris525
I've messed around with a bunch of different stuff
but never the inside of a carb
Anybody have any desriptions or better yet
pictures of upping the main and the pilot
and changing the clip position on the needle


Go to thumpertalk.com. They have tutorials for jetting the fcr carb with pictures.

[Chris525]

Thanks but just back from wally world and the new 4 wheel atv action mag has whole section on setting up the fcr carb

[Chris525]

OK I rejetted to a 165 main
and moved the factory needle to the 5th clip down
turn the idle up a little
runs a whole lot better but every once in while on start
off I'll kill it if I dont use plenty of fuel
is this normal or should I change something
---fyi---- 07 525, air box lid removed, uncorked fac. muffler,
also purchased 168 and 170 mains

[OutlawBill]

Sounds like you need a larger pilot jet go up one size stock I think is a 45 try a 48. All so get a R&D power pump http://www.r1dean.com/index.html

[Evasiveone]

Also the o-ring mod would help the low end stall like that.

[SSJEFF]

Check this out

http://www.predatorowners.com/index.cfm?action=thread&catid=99&topid=574&thrid=47400

It may be of some help and you might check out all the other how to threads.

[Chris525]

Okay for months now I've been laughing at everyone who spent $76 on a JD jet kit
I've played with jetting ( 158, 160, 165, 168, 170)
I've played with the clip position ( every position)
I've played with the air/ fuel screw

I;ve had it runnin pretty darn good for a while

I got a bug and decided I wanted JD's needles and o-rings so I got it

!!!!!!!!! Totally different quad, power delievery is sweet!!!!!!!!!!
JD does make a difference

[U1arunit]

Originally posted by Chris525 I got a bug and decided I wanted JD's needles and o-rings so I got it

!!!!!!!!! Totally different quad, power delievery is sweet!!!!!!!!!!
JD does make a difference [/B]

Can we say I told you so..? hehe..

[Chris525]

yea you can
thats why I posted this
jd knows what their doing

[U1arunit]

Originally posted by Chris525
yea you can
thats why I posted this
jd knows what their doing

Yes indeed, I am a very pleased customer as well.

[montycarlo]

/me adds to Christmas list.....