Main jet 1-2 lean / 1-2 rich = ???

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Main jet 1-2 lean / 1-2 rich = ??? by: gy6fandan - Jul 25, 2014 10:07:11 GMT -5

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Post by gy6fandan on Jul 25, 2014 10:07:11 GMT -5

After an upgrade ( still tweaking ) finding jet size an issue.

Carb is PD24J on 150cc.

#120 is simply too rich at running speeds (10mph +)

#115 is great at idle and performs decent at running speeds (10mph + 35mph). Runs awful over 35mph

However the #115 causes temperature rise of 300 deg in a few minutes
during 5 minute test ride....... The 300 deg temp is off the cylinder head / under the spark plug - not oil temp.

Sooooo, anyone know where I can find a PD24J main jet between the
#115 and #120 size ?

Thinking a #117 - #118 would be the perfect medium - but where to get it ?... Anyone

gy6fandan PM gy6fandan gy6fandan's Posts gy6fandan's Threads Freshman Rider Currently Offline Posts: 76 Likes: 6 Joined: May 11, 2013 18:18:30 GMT -5	Main jet 1-2 lean / 1-2 rich = ??? by: gy6fandan - Jul 25, 2014 12:58:11 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by gy6fandan on Jul 25, 2014 12:58:11 GMT -5 No, they are Thread Size: M5x0.80 ---> gy6 150 Keihin staock carb jets - PD24J Pehaps I should search by M5x0.80 jet size by Keihin ?

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Main jet 1-2 lean / 1-2 rich = ??? by: ramblinman - Jul 25, 2014 12:58:29 GMT -5

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Post by ramblinman on Jul 25, 2014 12:58:29 GMT -5

i got a 118 jet from power-barn.com. you may want to try adjusting the needle first. if you raise the needle a little (with the 115 or lower it with the 120) you might not need to buy another jet.

Last Edit: Jul 25, 2014 13:00:01 GMT -5 by ramblinman

gy6fandan PM gy6fandan gy6fandan's Posts gy6fandan's Threads Freshman Rider Currently Offline Posts: 76 Likes: 6 Joined: May 11, 2013 18:18:30 GMT -5	Main jet 1-2 lean / 1-2 rich = ??? by: gy6fandan - Jul 25, 2014 13:02:17 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by gy6fandan on Jul 25, 2014 13:02:17 GMT -5 Thanks ---> ramblinman I will check it out

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Main jet 1-2 lean / 1-2 rich = ??? by: alleyoop - Jul 25, 2014 13:06:13 GMT -5

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Post by alleyoop on Jul 25, 2014 13:06:13 GMT -5

They have 117.5 and 118 just have to google for them under Kehin 24mm carb main jets. I know cause I ordered them for my 182cc build and it took a 122.5 main a 125 was to much fuel a 120 was ok but on the edge of being a little on the lean side, so to be safe I have the 122.5 in.

.

..BAD TO THE BONE..

PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears..MOW-POWER

WATCH OUT...THOSE WHO DO NOT KNOW, DO NOT KNOW THAT THEY DO NOT KNOW

gy6fandan PM gy6fandan gy6fandan's Posts gy6fandan's Threads Freshman Rider Currently Offline Posts: 76 Likes: 6 Joined: May 11, 2013 18:18:30 GMT -5	Main jet 1-2 lean / 1-2 rich = ??? by: gy6fandan - Jul 25, 2014 13:24:27 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by gy6fandan on Jul 25, 2014 13:24:27 GMT -5 Thanks ----> alleyoop I will check it out..... a 117.5 and 118 main jet could be good for that "fine" tunning.

alleyoop PM alleyoop alleyoop's Posts alleyoop's Threads Senior Rider Currently Offline Founding Member NO SLUG PST150H TRIKE..62mm 60mmStroker crank 16/37 gears Posts: 4,848 Likes: 327 Joined: Feb 19, 2013 11:27:56 GMT -5	Main jet 1-2 lean / 1-2 rich = ??? by: alleyoop - Jul 25, 2014 13:44:26 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by alleyoop on Jul 25, 2014 13:44:26 GMT -5 They also have a 118 .
	...BAD TO THE BONE.. PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears..MOW-POWER WATCH OUT...THOSE WHO DO NOT KNOW, DO NOT KNOW THAT THEY DO NOT KNOW

Main jet 1-2 lean / 1-2 rich = ??? By gy6fandan (Read 470 times)

Post by gy6fandan on Jul 25, 2014 10:07:11 GMT -5

Post by gy6fandan on Jul 25, 2014 12:58:11 GMT -5

Post by ramblinman on Jul 25, 2014 12:58:29 GMT -5

Post by gy6fandan on Jul 25, 2014 13:02:17 GMT -5

Post by alleyoop on Jul 25, 2014 13:06:13 GMT -5

Post by gy6fandan on Jul 25, 2014 13:24:27 GMT -5

Post by alleyoop on Jul 25, 2014 13:44:26 GMT -5

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