jetting setting for 2023 hawk 250 wit 300 cc bore kit

marcel rivero · 06-07-2023, 12:50 PM

Good afternoon everyone, I'm new at the forum and I'm new at chinese bikes. I purchased a 2023 hawk 250 and to upgrade it I also bought a 28 mm nibbi carb and a 300cc big bore kit. is anyone familiar with the jetting set now that the bike is "300"cc. I live in Miami, we are at sea level here and temps run well into the 90 degrees all year round Any recommendations? thank you so much

XLsior · 06-07-2023, 05:47 PM

its only a 20cc bump up in displacement. so even with stock jetting the bike will probably run fine if a little lean...

If the plug does however show a overly lean burn then the you will only require the next size up in jetting.

the 300cc kit only makes the engine a 250cc from the stock 229cc...

Megadan · 06-07-2023, 07:18 PM

Most guys I have talked to, if no other upgrades were done like a ported head, was like a 2 to 3 point increase on the main. (135 to a 138).

marcel rivero · 08-29-2023, 03:15 PM

hello guys, thank you for your help. The bike has a new issue now. I can't start a new thread so maybe someone will read this and help me. It is an interesting one.
So I get on the bike and she starts right up, no issues. after riding at about 60mph for 10 miles my lights start flickering. when I pull to a red red light the bike dies and I can only kickstart it, it seems to have lost all electrical power. after a bit of riding it will do the same thing, lights flickering, no lights, no horn, nothing. I get home I park the it, the following morning I turn the key and she starts right up. extremely weird behavior. I have already bought a new battery, I'm waiting for it to arrive but I dont think that's going to fix the problem....thank you guys,

XLsior · 08-29-2023, 05:11 PM

Replacement battery might be it or the original battery just needs a recharge
Could be a regulator...
Might be the stator but if the bike kick starts its unlikely...
Could be loose wiring/connector

06-07-2023, 12:50 PM	#1
marcel rivero Join Date: Jun 2023 Posts: 3	jetting setting for 2023 hawk 250 wit 300 cc bore kit Good afternoon everyone, I'm new at the forum and I'm new at chinese bikes. I purchased a 2023 hawk 250 and to upgrade it I also bought a 28 mm nibbi carb and a 300cc big bore kit. is anyone familiar with the jetting set now that the bike is "300"cc. I live in Miami, we are at sea level here and temps run well into the 90 degrees all year round Any recommendations? thank you so much
	0

06-07-2023, 07:18 PM	#3
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,065	Most guys I have talked to, if no other upgrades were done like a ported head, was like a 2 to 3 point increase on the main. (135 to a 138). __________________ 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
	1

08-29-2023, 03:15 PM	#4
marcel rivero Join Date: Jun 2023 Posts: 3	new issue hello guys, thank you for your help. The bike has a new issue now. I can't start a new thread so maybe someone will read this and help me. It is an interesting one. So I get on the bike and she starts right up, no issues. after riding at about 60mph for 10 miles my lights start flickering. when I pull to a red red light the bike dies and I can only kickstart it, it seems to have lost all electrical power. after a bit of riding it will do the same thing, lights flickering, no lights, no horn, nothing. I get home I park the it, the following morning I turn the key and she starts right up. extremely weird behavior. I have already bought a new battery, I'm waiting for it to arrive but I dont think that's going to fix the problem....thank you guys,
	0

06-07-2023, 05:47 PM	#2
XLsior Join Date: Aug 2020 Location: Australia Posts: 1,327	its only a 20cc bump up in displacement. so even with stock jetting the bike will probably run fine if a little lean... If the plug does however show a overly lean burn then the you will only require the next size up in jetting. the 300cc kit only makes the engine a 250cc from the stock 229cc...
	1

08-29-2023, 05:11 PM	#5
XLsior Join Date: Aug 2020 Location: Australia Posts: 1,327	Replacement battery might be it or the original battery just needs a recharge Could be a regulator... Might be the stator but if the bike kick starts its unlikely... Could be loose wiring/connector
	0