Jump to content

  • Follow us:

  • Facebook
  • YouTube
  • Twitter
  • Google+
  • RSS Feed
  • Google+





Related Garage

2002 cr250.jpg

Honda CR250R (2002)


Owner: Winters
Added on November 22, 2013



Related Reviews

Honda CR500R 2003


Last review by Byron909
* * * * -

Honda CR85RB Expert 2006


Last review by skidsteer
* * * * *

Honda CR125R 2007


Last review by nino
* * * * *

Honda CR85R 2007


Last review by darren013
* * * * *

Honda CR250R 2005


Last review by skooli
* * * * -
Photo
- - - - -

Pro Circuit CR500 2001 Jetting Chart, need explaining please.


  • Please sign in to reply

8 replies to this topic
  • AndyMx

    TT Bronze Member

288 posts
Location: Australia

Posted December 29, 2010 - 11:36 PM


G'day guys, i'm wondering if someone can explain to me the CR500 jetting specs i obtained from the Pro Circuit website that i have highlighted?

Are the details listed beside CR500 the stock jetting specs? and the details beside Pro Circuit the jetting specs if a pro circuit pipe is applied to the bike?

What does STD mean? Standard?

What does POS mean?

and which screw are they referring to for the 1 1/2?

Please forgive my ignorance, i have never gotten into the jetting side of things.

Posted Image

Thanks in advance.

Andy.

  • yathump

    TT Addict

3,660 posts
Location: Michigan

Posted December 30, 2010 - 02:38 AM


G'day guys, i'm wondering if someone can explain to me the CR500 jetting specs i obtained from the Pro Circuit website that i have highlighted?

Are the details listed beside CR500 the stock jetting specs? and the details beside Pro Circuit the jetting specs if a pro circuit pipe is applied to the bike?
Yes
What does STD mean? Standard?
Correct
What does POS mean?
Position of the clip
and which screw are they referring to for the 1 1/2?
Airscrew
Please forgive my ignorance, i have never gotten into the jetting side of things.

Posted Image

Thanks in advance.

Andy.


I answered inside the quote in bold
This is for the CR5 with the stock PJ carb on it, Service Honda mounts a 39.5 PWK carb on their bikes so jetting/ jet numbers will be different

  • HrcRacing

    TT Addict

3,172 posts
Location: Florida

Posted December 30, 2010 - 12:49 PM


Air screw (brass straight slot) location:

Posted Image

  • jbird710
3,575 posts
Location: Texas
Garage View Garage

Posted December 31, 2010 - 11:05 AM


Position of the clip (needle clip) see diagram below:

Posted Image

  • riles

    TT Member

95 posts
Location: Australia

Posted December 31, 2010 - 03:21 PM


Blue haze,

FWIW, I've just finished rejetting a 2000 stock 500 (fmf gnarly, fresh top end and the head shaved for a bit more compression)

I tried the fmf jetting specs but got pinging at 1/4 throttle and a slightly lean feel.
I went to 58 pilot, position 4 standard needle and a 172 main.
This was better all around and what I'm going to to ride with for a while.
This is for trail riding, 70f, sea level, premium fuel,40:1.

500s are new to me so others on this forum are more experienced but I share my specs as you in australia too.

  • AndyMx

    TT Bronze Member

288 posts
Location: Australia

Posted December 31, 2010 - 09:49 PM


cool thanks for some great info guys, really appreciate it. And Riles your info will help heaps seeing as we are on the same continent.

  • Keith Z

    TT Member

95 posts
Location: New Jersey

Posted January 02, 2011 - 05:02 AM


You should use the chart as a GUIDE only. I live on the east coast of the US and found that the jetting recommendations are too rich for my area. We have a lot of humidity which makes the need to run leaner. You need to experiment for the best results. Good luck.

  • LovingOffroadPain

    TT Titanium Member

2,398 posts
Location: Texas
Garage View Garage

Posted June 25, 2014 - 12:50 PM


Blue haze,

FWIW, I've just finished rejetting a 2000 stock 500 (fmf gnarly, fresh top end and the head shaved for a bit more compression)

I tried the fmf jetting specs but got pinging at 1/4 throttle and a slightly lean feel.
I went to 58 pilot, position 4 standard needle and a 172 main.
This was better all around and what I'm going to to ride with for a while.
This is for trail riding, 70f, sea level, premium fuel,40:1.

500s are new to me so others on this forum are more experienced but I share my specs as you in australia too.

 

Now that the 500 isn't so new, how do you like it??



  • frdbtr

    TT Addict

3,464 posts
Location: Utah
Garage View Garage

Posted June 26, 2014 - 06:55 AM


Holy old thread batman.







Related Content

Forums
Photo

CR250 Swingarm by 2StrokestheFuture


Dirt Bike   Make / Model Specific   Honda   Honda 2-Stroke
  • 1 reply
Forums
Photo

Hondasaki? by braaaaaaaaaaaaap


Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  92 replies
Forums
Photo

Pro-Circuit Head and Cylinder Modifications Service '07 CR250 by Speeddemon73


Dirt Bike   Make / Model Specific   Honda   Honda 2-Stroke
  • Hot  98 replies
Forums
Photo

bike for female rider? by rhii108


Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • 7 replies
Forums
Photo

1995 CR250R Jeremy McGrath Edition? by dudeMcSpeedy


Dirt Bike   Make / Model Specific   Honda   Honda 2-Stroke
  • Hot  37 replies

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.