jetting A PWK for a 2002 CR250

R

rcpilot_971

Member

Oct 30, 2002

43

0

• Oct 12, 2005

• #1

I have a 2002 CR250 with a FMF fatty and v force reeds other than that its stock stock I run vp 110 at 40:1 at about 400ft ELV dose any one know where a good starting point would be for getting this thing jetted


Thanks Tim

 

soulmate33

LIFETIME SPONSOR

Sep 29, 2004

158

0

• Oct 13, 2005

• #2

My '02 CR250 has:

My 38mm PWK has a 48 pilot and 180 main.
I'm at sea level here in Hawaii. At 2.75 turns out it is still a little rich.

I'm gonna drop to a 45 pilot and 175 main. Stock needle (for a 2000 CR250).

 

R

rcpilot_971

Member

Oct 30, 2002

43

0

• Oct 13, 2005

• Thread starter
• #3

is it rich through out or just on the top end

 

soulmate33

LIFETIME SPONSOR

Sep 29, 2004

158

0

• Oct 13, 2005

• #4

rcpilot_971 said:

is it rich through out or just on the top end

Click to expand...

Both....I actually don't mind running it slightly richer, the motor runs cooler and hopefully won't have to worry about seizing the motor leaning out.I'm still running the same plug from last year.knock, knock on wood......

 

D

D36-108A

~SPONSOR~

Dec 3, 2002

367

0

• Oct 15, 2005

• #5

175 main, 45 pilot, DGK needle with its clip in the middle position, adjust airscrew to suit. BraaaaaaAAAAAP! Crisp, clean-running power from just above seal level to above 5,000 feet. Pump gas isn't a problem but I prefer to run race gas, and I put many hours on a single plug. Easy starting, never fouled a plug, blah blah, rave, rave.

 

T

t300

Member

Jul 5, 2006

1

0

• Feb 19, 2013

• #6

2004 cr250 jetting

2004 cr250r other mods, fmf fatty , fmf q-stealth, v-force 3, boysen exaust flange, keihn pwk 38mm of of a 05 yz250

stock cylinder pwk conversion
pilot - 42
needle - cej 3rd
main - 175

now running

terry varner modified cylinder and head
pilot - 40
needle - cej 3rd
main - 175
110 leaded race gas 50/50 with 92 premium gas
bike is a rocket.....

 

CR3999

Member

Feb 28, 2000

163

2

• Feb 26, 2013

• #7

JD jetting has or did have some nice needles with there jetting kits that are sweet. Try jdjetting.com .