Rich?...lean?

[468rider]

I’m new to two strokes and I’m a decent hare scramble racer and I don’t want to jet because I race all over the east coast....I’m running 32/1 KLOTZ with 20% castor....is it jetting and if not do I need to go leaner on the oil to fuel mix which I’m scared to do

[markit]

Pretty rich, you're looking for a tan color.

[crazyd]

In case u r unaware: using less oil in ur gas will make the jetting richer. 

[William1]

Make/Model/Year?

Current jetting specs?

Modifications?

[MotorBoatin]

7 hours ago, 468rider said:

I’m new to two strokes and I’m a decent hare scramble racer and I don’t want to jet because I race all over the east coast

If your going to ride smokers you need to learn how to adjust your jetting...unless you have a new KTM with EFI...and it seems like voodo but once you figure it out it’s easy

This article explains it pretty well >>>>  https://www.duncanracing.com/TechCenter/KeihinCarbJetting.pdf 

 

And this chart has been around forever

 

 

 

Once you get it sorted out you’ll realize the needle is the one you’ll be F’n with most often and you’ll get that Honda running right

Edited September 20, 2018 by MotorBoatin

[Tahoe Gator]

This article explains it pretty well >>>>  https://www.duncanracing.com/TechCenter/KeihinCarbJetting.pdf 
 

Curious that the article makes no mention of the Power Jet

[MotorBoatin]

1 hour ago, Tahoe Gator said:

 

Curious that the article makes no mention of the Power Jet

 

I think that is an OLD article and not all carbs have a power jet. Besides all a power jet does is allow you to run a one size smaller main

Here is a modern take on jetting 

 

 

Edited September 20, 2018 by MotorBoatin

[468rider]

In case u r unaware: using less oil in ur gas will make the jetting richer. 

I am very new to the 2 smoke game and trying to learn as I go but I really appreciate it ig always rode four strokes and I didn’t have the power when I absolutely wanted it such as field sections and the quicker tracks as well as the wheight of a 4t to a 2t is a world different

[468rider]

Make/Model/Year?
Current jetting specs?
Modifications?

2004 cr250 with procircuit platinum, vforce 3 Reed

[William1]

1 hour ago, 468rider said:

 

2004 cr250 with procircuit platinum, vforce 3 Reed

 

Current jetting?

[468rider]

Current jetting?

No clue I’ve only rode it once and that was at a race last weekend just bought it

[William1]

5 minutes ago, 468rider said:

 

No clue I’ve only rode it once and that was at a race last weekend just bought it

Then it is impossible to tell you what changes to try. Have you done a compression test? Repacked the silencer? Serviced the power valve? Leak down test? All of this has to be known before you can make jetting changes or solve a problem.

[jaguar57]

Klotz castor should be used at 50:1

that is why the plug is so dark (although the fuel/oil ratio could also be too rich)

go to http://www.dragonfly75.com/moto/calculators.html and click on "read more" at the fuel/oil ratio section

[turbo dan]

That plug looks like you are at least two, maybe three sizes too big on the main jet.  Premix ratio has nothing to do with it, that thing isn't burning near hot enough.

If the plug looks white you are too lean.  You are shooting for an orange/tan colored insulator.

Edited September 23, 2018 by turbo dan

[468rider]

That plug looks like you are at least two, maybe three sizes too big on the main jet.  Premix ratio has nothing to do with it, that thing isn't burning near hot enough.
If the plug looks white you are too lean.  You are shooting for an orange/tan colored insulator.

Thank you will look into it I just broke my tibia at the race yesterday so I’ll have plenty of time to mess with it

[turbo dan]

Yikes.  Get well.

[bigred455]

Wasting your time jetting with a spark plug,if you have a new plug and do a plug chop the insulator is still going to be white,meaning you have the correct heat range on plug it does not mean it is lean. It also takes time to get color on a new plug on the nose of the insulator but at the base different story.  Just go by feel trial and error.