Base jetting cr 125 06 update pwk as!

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5/28/2017 1:40 PM

Anyone got a good starting point in jetting a 06 cr 125?

Pro circuit pipe and a shorty silencer.
Will check tomorrow what's currently inside.

Sea level regular fuel.
Getting a 38mm air striker asap.

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5/29/2017 4:27 AM
Edited Date/Time: 5/29/2017 4:27 AM

Look at Pro Circuits website. There is a jetting specs page on there.

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5/29/2017 12:20 PM

Actually scored a screw top pwk 38 air striker..

So maybe a rough starting point för that?

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5/29/2017 1:03 PM

Kawasaki-rider wrote:

Anyone got a good starting point in jetting a 06 cr 125?

Pro circuit pipe and a shorty silencer.
Will check tomorrow what's ...more

I'm going to assume the 38mm PWK that you have, has a #7 slide in it. In those smaller bore125/144 motors, the slide really make a significant difference in your jetting setup. With that said I have a decent setup for your bike.

Needle--CCL in the #4 clip---https://jetsrus.com/individual_parts/017_464_su.html

Pilot--52 or 50 depending on where you end up with the air screw

Main--185, start with the 185, but in the warmer weather you may be able to drop it down to a 182.

Air screw--start out a 1.75 turns out, and adjust as needed.

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5/29/2017 1:40 PM

Efter some googling, i came up with exactly your specs!

Tried to order from jetsrus but won't accept foreign, will look around. I'll check the slide as soon as I get it! Thanks

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6/18/2017 5:09 AM
Edited Date/Time: 6/18/2017 5:10 AM

So i got the bike started, fiddling with pilot jet sine the bike not rolls yet.

Squish 1mm
98 fuel (euro) with maxima 927 3%

Ccl needle 4th clip
7 slide
185 main
Started with a 52 main, felt fat so I tried the 50.

It idles highest in rpm with air screw maximum out, so I am actually gonna try a 48 just for fun, just need to get one.

Without load it revs out good and doesn't bog, or hesitate. but the spark plug feels a little too wet.

48 sounds lean tough.

I'll keep you all updated as soon the bike and me are ready to do some testing under load.

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6/18/2017 6:27 PM

Kawasaki-rider wrote:

So i got the bike started, fiddling with pilot jet sine the bike not rolls yet.

Squish 1mm
98 fuel (euro) with maxima 927 3% ...more

The 48 was too lean in my 07 with that needle', but give it a try. where is your air screw set at ?

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6/19/2017 1:13 AM

Kawasaki-rider wrote:

So i got the bike started, fiddling with pilot jet sine the bike not rolls yet.

Squish 1mm
98 fuel (euro) with maxima 927 3% ...more

digger wrote:

The 48 was too lean in my 07 with that needle', but give it a try. where is your air screw set at ?

I had it almost all the way out, like 3.5 turns, and it still felt responsive etc.

Maybe our fuel is a little different. I'll try but otherwise I'll put the 50 back in it smile
Hard to tell without putting load on the bike also..

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6/21/2017 7:34 AM

Tested the 48 pilot today, and I think (Without having load on the engine) we have a winner so far!

With 500rpm rised idle. It idles the same with air screw 1.5-full out, less air screw and it lowers the rpm.

With the 50 it sputtered out some unburnt fuel on the number plate also, 48 it doesn't leave so much spooge on the plate, responsive as hell!

I'll keep the forum updated as soon as I get my swingarm bolted up and can test it with load on it, then we'll see if it bogs or not smile

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6/29/2017 12:48 PM

Bike up and running.cool

21 degrees Celsius
Sea level
Maxima castor 3%
98 fuel

This is where I'm at now:

Back to 50 pilot.
185 main
Ccl needle 3rd clip (one leaner)
Air screw 2.25 out.

As stated, 48 is too lean.
Went back to 50, felt good on idle and top, had a slight hesitate in the middle, dropped the needle 1 clip.
Now it gets an nice even punch if I "lug/bog" it and give full throttle, nice even pull without bogging or hesitate.

Spark plug perfectly brown (phone makes it more grayish than irl) and the pipe has some nice colour after 20min runtime
Photo

Photo

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6/30/2017 12:40 AM

I knew I could get you close, but the fine tuning is up to you. It sounds like you have a handle on it now though.

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6/30/2017 2:49 AM

digger wrote:

I knew I could get you close, but the fine tuning is up to you. It sounds like you have a handle on it now though.

Yeah, it was close enough, thanks man.smile

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6/30/2017 7:15 PM

macz400 wrote:

Look at Pro Circuits website. There is a jetting specs page on there.


I tried PC jetting and thought the stock range was better.
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7/1/2017 12:50 AM

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