Carburetor question

Mehi1963 · 02-25-2019, 04:27 PM

On the hawk. I have a Mikuni carburetor. What Jets come on that. Should I change over to 115 jet. My throttle at top end. does not feel like it have any more speed to it.

Azhule · 02-26-2019, 12:28 PM

If you just bought the carb, and it is the Mikuni VM26 variety... they are usually shipped with a 20 slow/pilot jet and a 100 main jet

41bigdawg · 02-26-2019, 03:21 PM

Mikuni clone comes with 20 pilot and 100 main...as far a what you should change to depends on a lot of factors, the altitude you live at, modifications that you have done like exhaust or air filter etc,. I run with the stock pilot and a 115 main and I had to move the needle up one notch to lean the idle out a little. Each bike is different so you have to play around with it till you get the right set up.

Painlesstom · 02-26-2019, 04:19 PM

For reference, I took the cat out of my header, NGK plug, opened airbox, and with the 20 pilot and 120 main, needle clip on the second notch from the top; it runs perfect. I have a 40 tooth rear sprocket and the highest I've hit so far is 62 mph (Verified by GPS and digital dash).

Ariel Red Hunter · 02-27-2019, 09:51 AM

Quote:

Originally Posted by Mehi1963

On the hawk. I have a Mikuni carburetor. What Jets come on that. Should I change over to 115 jet. My throttle at top end. does not feel like it have any more speed to it.

We need to know what you are using for an aircleaner, and what you are using for exhaust...ARH

Megadan · 02-27-2019, 02:51 PM

I would also suggest opening the carburetor to verify what jets you have. Lately some versions of the "Mikuni" have come with a pilot jet stamped as a "40", but as a member on here verified it's orifice size is closer to that of a 25 or 27.5 Mikuni VM28/486, meaning it is actually a Keihin 40 sized jet much like the stock carburetor.

As ARH stated, a list of modifications will go a long way as well.

Mehi1963 · 02-27-2019, 06:21 PM

I am using a pod air filter, and aftermarket Muffler.

NzBrakelathes · 02-27-2019, 10:54 PM

If you want to consider the stock carb heres my kit and flexible on jettting etc.

https://www.ebay.com/itm/303077495104

I have a few things for the Hawk etc and will be listing more after I confirm more fitment issues

02-25-2019, 04:27 PM	#1
Mehi1963 Join Date: Dec 2017 Posts: 14	Carburetor question On the hawk. I have a Mikuni carburetor. What Jets come on that. Should I change over to 115 jet. My throttle at top end. does not feel like it have any more speed to it.
	0

02-26-2019, 12:28 PM	#2
Azhule Join Date: Dec 2015 Location: CO Posts: 1,525	If you just bought the carb, and it is the Mikuni VM26 variety... they are usually shipped with a 20 slow/pilot jet and a 100 main jet __________________ "Think as you like... but this self proclaimed Professor is always right" - Buckshot "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P.
	1

02-27-2019, 02:51 PM	#6
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,045	I would also suggest opening the carburetor to verify what jets you have. Lately some versions of the "Mikuni" have come with a pilot jet stamped as a "40", but as a member on here verified it's orifice size is closer to that of a 25 or 27.5 Mikuni VM28/486, meaning it is actually a Keihin 40 sized jet much like the stock carburetor. As ARH stated, a list of modifications will go a long way as well. __________________ 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

02-26-2019, 03:21 PM	#3
41bigdawg Join Date: Sep 2018 Location: Tennessee Posts: 41	Mikuni clone comes with 20 pilot and 100 main...as far a what you should change to depends on a lot of factors, the altitude you live at, modifications that you have done like exhaust or air filter etc,. I run with the stock pilot and a 115 main and I had to move the needle up one notch to lean the idle out a little. Each bike is different so you have to play around with it till you get the right set up.
	0

02-26-2019, 04:19 PM	#4
Painlesstom Join Date: Feb 2019 Location: Ludowici, GA. Posts: 19	For reference, I took the cat out of my header, NGK plug, opened airbox, and with the 20 pilot and 120 main, needle clip on the second notch from the top; it runs perfect. I have a 40 tooth rear sprocket and the highest I've hit so far is 62 mph (Verified by GPS and digital dash).
	1

02-27-2019, 06:21 PM	#7
Mehi1963 Join Date: Dec 2017 Posts: 14	I am using a pod air filter, and aftermarket Muffler.
	0

02-27-2019, 10:54 PM	#8
NzBrakelathes Join Date: Jun 2016 Location: Hell Posts: 2,408	If you want to consider the stock carb heres my kit and flexible on jettting etc. https://www.ebay.com/itm/303077495104 I have a few things for the Hawk etc and will be listing more after I confirm more fitment issues
	0