06-02-2023, 07:44 AM | #16 | ||
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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06-03-2023, 04:31 PM | #17 |
Join Date: Nov 2022
Location: Pennsyltuckey
Posts: 309
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Follow Megadan's instructions for jetting. I suspect you had a vacuum leak while attempting to jet the Nibbi. Go slow, and only make one change at a time. Don't waste your time on a narrowband O2 sensor. They act like an on/off switch and are only useful for finding stoichiometry (14.7:1 AFR). This is fine for idle and midrange but too lean for 3/4-full throttle. You want more like 13:1 for high engine load. Is there a motorcycle shop nearby with a dyno? They could either jet your carb or provide a dyno sheet with AFR curve you could use for tuning. GL
Edit: After more thought the narrow band O2 sensor could be useful for baseline tuning. Afterward just increase the main jet by a few steps. Also, once the bung is installed you could upgrade to a wideband sensor later on.
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22 Templar 250 Last edited by Fast_Freddy; 06-03-2023 at 08:21 PM. |
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06-10-2023, 12:06 AM | #18 |
Join Date: Aug 2020
Location: Australia
Posts: 1,399
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if you're referring to the paper gaskets that come the nibbi and the insulation spacer...
I didn't install the spacer just 1 paper gasket with a light coat/smear of RTV/gasket slazz. But if there was really a leak the bike would typically behave lean and spluttery. The o'ring plate and paper gasket might help...its basically another insulation spacer plate and another paper gasket.... |
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nibbi templar |
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