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Author Topic: Keihin PB16 Main Jet  (Read 1467 times)

demeter

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Keihin PB16 Main Jet
« on: March 20, 2015, 02:05:47 PM »
So I just finished installing a bigger jet for my first time! Boy do I feel good.  ;D I'm a real man now right?  :P

Anyway I removed the airbox restriction while I was in there.

All the threads I viewed said the restricted jet was a 78 and to upgrade to 82 or larger. So I installed a 90. I bought a bag of sizes to play with it.

To my surprise the jet I removed wasn't a 78 but a 70..  :o Now I'm having second thoughts about installing a 90. I just put it all back together and haven't tried starting it yet.
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2010 Like 50 2T (Malossi 70cc BBK, Tecnigas Next-R, Blue Polini Torque Spring, Yellow Clutch Springs, 5.5g Sliders, Stock Carb: 95 MJ, Stock Airbox Drilled, PIAA GT-X Headlight, Kolite 5630 Running Lights, 140/70-12 Rear Tire)

demeter

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Re: Keihin PB16 Main Jet
« Reply #1 on: March 20, 2015, 05:23:19 PM »
Airbox restriction reinstalled.  :P
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2010 Like 50 2T (Malossi 70cc BBK, Tecnigas Next-R, Blue Polini Torque Spring, Yellow Clutch Springs, 5.5g Sliders, Stock Carb: 95 MJ, Stock Airbox Drilled, PIAA GT-X Headlight, Kolite 5630 Running Lights, 140/70-12 Rear Tire)

245luigi

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Re: Keihin PB16 Main Jet
« Reply #2 on: March 20, 2015, 05:39:56 PM »
Wow thats a small jet! 90 MJ should have you running a bit rich. Check out the plug chop stuff to dial it in.

I found that the airbox restriction out while on the stock carb caused nothing but headaches
 
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Currently:
2012 Kymco Like70
72cc Malossi BBK
Dell'Orto PHBG 19 AS Carb
52 Pilot Jet
92 Main Jet
W7 Needle, 40 Slide
2T atomizer + bushing
Tecnigas NextR Exhaust
TinyTach in Headset
2011 Kymco Like50 (stolen -> recovered)
PM's OK!

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