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Dusman · 05-16-2024, 08:26 AM

I also re-jetted the OEM YouAll PZ27 carb last night. I went with a 100 main and 38 pilot and it worked perfectly for my elevation (@ 850-1000 ft above sea level).

I took out the float bowl “sealed” screws (that was fun…not) and indeed OKO, CVK/PZ27 jets work just fine in the OEM carb; both pilot and main jets. Here’s a link from jetsrus.com for the measurements if anyone wants to look at this so that they can order the jets on Amazon:

https://jetsrus.com/carburetor/carb_...arb_parts.html

I already had a bag of the appropriate type of Keihin pilot and main jets from Amazon, but the link is now dead, so I’ll just put the measurements below:

Main jet:
OVERALL LENGTH = 8mm
HEAD DIAMETER = 6mm
THREAD DIAMETER = 4.9

Pilot jet:
OVERALL LENGTH = 28mm
THREAD DIAMETER = 5.9mm
HEAD DIAMETER = 4.9mm

I did see on various Amazon links that the measurements vary just slightly from what I have listed above from jetsrus (i.e., head diameters of 5.0 vs. 4.9mm per jetsrus specs), so just take note of those little details. I found that for my purposes, it didn’t matter as the Amazon PZ27 jet kit that I have fits just fine in the OEM YouAll Storm 150 carb.

05-16-2024, 08:26 AM	#99
Dusman Join Date: Jan 2018 Location: NC Posts: 217	I also re-jetted the OEM YouAll PZ27 carb last night. I went with a 100 main and 38 pilot and it worked perfectly for my elevation (@ 850-1000 ft above sea level). I took out the float bowl “sealed” screws (that was fun…not) and indeed OKO, CVK/PZ27 jets work just fine in the OEM carb; both pilot and main jets. Here’s a link from jetsrus.com for the measurements if anyone wants to look at this so that they can order the jets on Amazon: https://jetsrus.com/carburetor/carb_...arb_parts.html I already had a bag of the appropriate type of Keihin pilot and main jets from Amazon, but the link is now dead, so I’ll just put the measurements below: Main jet: OVERALL LENGTH = 8mm HEAD DIAMETER = 6mm THREAD DIAMETER = 4.9 Pilot jet: OVERALL LENGTH = 28mm THREAD DIAMETER = 5.9mm HEAD DIAMETER = 4.9mm I did see on various Amazon links that the measurements vary just slightly from what I have listed above from jetsrus (i.e., head diameters of 5.0 vs. 4.9mm per jetsrus specs), so just take note of those little details. I found that for my purposes, it didn’t matter as the Amazon PZ27 jet kit that I have fits just fine in the OEM YouAll Storm 150 carb. Last edited by Dusman; 05-17-2024 at 08:06 AM.
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