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05-14-2017, 09:08 PM | #1 |
Join Date: Oct 2016
Location: New Smyrna Beach, Florida
Posts: 91
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Bike: 2016 CSC TT 250
Elevation: 13 feet Carb: Stock Keima Jet Sizes: 115 Main, Stock Pilot Needle Setting: Raised 1 notch Pilot Screw Turns: I haven't had time to drill out the plug for the pilot as of yet. Relevant Mods: Opened up stock exhaust, 17/45 Gearing, swapped stock speedo for digital cluster. Top Speed: I have reached 67 mph on GPS on a slight downhill which read 68 on the digital cluster. It will cruise at 60 mph with no problem.
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2016 CSC TT 250, 17/40 sprockets, JT 428 chain, Stock Keima carburetor with needle raised 1 notch and 115 main jet. Modified stock exhaust, Tachometer/Digital cluster upgrade. LED headlight, Superbrightleds 1157 Tail light bulb, Shinko 705's 90/90-21 and 120/80-18. |
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05-19-2017, 11:42 AM | #2 |
Join Date: Apr 2017
Posts: 27
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when you guys talk about shimming the needle, do you have the 5 available notches, you put it on the most rich setting, and also put a washer under that?
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05-19-2017, 11:45 AM | #3 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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The stock carbs don't have the grooves so we have to shim it.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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08-06-2017, 09:08 PM | #4 |
Join Date: Mar 2017
Location: Beautiful Upstate NY
Posts: 65
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Bike: 2015 Hawk
Elevation:240' Carb: Factory Jet sizes: 110 Kehein main, factory pilot Needle setting: 2 custom washers Pilot screw turns: 1 1/2 Relevant mods: Airbox mod, NGK plug Top speed: 57mph, gps confirmed
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"You think life is crazy now? Just wait until the internet arrives!" -Albert Einstein |
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09-13-2017, 02:13 PM | #5 |
Join Date: Apr 2017
Location: Ohio
Posts: 89
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UPDATED!
Bike: Bashan Shark 250 Elevation: 981 ft Carb: Stock Keihin Jet sizes: Slow 35, Main 120 Needle setting: Clip last notch down. Pilot screw turns: 1 3/4 Relevant mods: Ebay CRF230 Exhaust, After market needle, Uni Pod filter. Top speed: 70MPH (GPS) Top speed. Likes to cruise around 55-60 Sprockets: 17T front, and 45T Rear.
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Bashan Shark, Keihen PZ30 Carb, Pilot 40, Main 120, Uni Filter, Exhaust, MSR Shifter, and some stickers. |
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09-26-2018, 09:43 AM | #6 |
Join Date: Jun 2017
Location: Madison, WI
Posts: 96
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Bike: 2017 Hawk
Elevation: 870ft Carb: Mikuni VM26 Clone Jet sizes: Genuine Mikuni Jets - 28 Pilot. 112.5 Main. Factory needle. Needle setting: middle notch Pilot screw turns: 1 1/2 Relevant mods: Sprockets - 17 front, 47 rear. Battlax BT45 tires. Motocheez airbox mod. PCV installed in crankcase breather tube. Front fork brace to help with front end speed wobbles. Top speed: 68mph flat out (no wind, flat road) |
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09-26-2018, 10:17 AM | #7 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Wow! you dug up a old one. lol I need to go back and revise my data a little.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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09-26-2018, 12:15 PM | #8 | |
Join Date: Jun 2017
Location: Madison, WI
Posts: 96
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Quote:
I think I'm going to go with megadan's setup with a slightly leaner main jet and needle setting to compensate for the stock exhaust. |
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04-10-2019, 08:05 PM | #9 |
Join Date: Feb 2019
Location: New England
Posts: 25
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Bike: 2019 CSC TT250
Elevation: 160ft Carb: Mikuni VM26 "30mm" Clone https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 Jet sizes: Genuine Mikuni Jets - 27.5 Pilot. 115 Main, mikuni needle and needle jet. Needle setting: Center groove Mixture screw: 2 Turns out from fully seated (engine pulls good through all gears with no hesitation. Good throttle response from idle to 1/2 throttle and 1/2 throttle to 3/4. Very snappy) Relevant mods: Sprockets - (Stock gearing 17/50), two stage foam filter (42mm), Ebay exhaust, Air injection eliminated. Havent done a top speed run due to the fact that I am still breaking in the engine. I have had it up to 60 mph on a flat stretch and that was at 3/4 to 7/8 throttle. I weigh 170lbs Last edited by blksheep; 04-11-2019 at 03:21 PM. |
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04-10-2019, 09:44 PM | #10 |
Join Date: Sep 2018
Posts: 173
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altitude: 800ft/244m
carb: PZ30 1.5 turns out on mix screw, 110 main jet, no needle mods, idle set while warm open choke at minimum rev without stall from stock pilot Valves: both .00285 set cold(would like to know a balance tune that doesn't make a lot of noise) That's a stock Magician with the iridium plug stock gap, T4 oil, and 87 octane. The coldest I've started it was 28F/-2C and had to go over all three choke stages in a three minute window do to the famous PZ30 pilot jet.. Around 60F/15C I can have it idle with open choke in under two minutes, and over 75F/24C not even use choke. I've put the VM26 china clone on other RPS bikes here but my personal bike I haven't cause I could never find the real 30mm Mikuni.. Last edited by DualSport; 04-12-2019 at 03:57 PM. |
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04-10-2019, 11:09 PM | #11 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Updated to be relevant for 2024
2018 Hawk 250. Altitude 1100ft. Engine mods: WGK 1010851 292 Camshaft, Roller Cam followers, Motocult 70mm big bore cylinder kit and ported cylinder head, Kajimoto CRF exhaust with 440mm Yoshimura clone muffler. Nibbi Racing high output coil with a shortened lead, XD05F plug cap w/o resistor, NGK DPR8EIX-9 Plug, Fueling: Mikuni VM26 "30mm" clone carburetor. 120 Main jet, 25 pilot, mixture 1 1/2 turns out, Needle 4th notch down. Other mods. Dual foam pod filter. 520 chain and sprockets with 13 front and 33 rear sprockets Shinko 700 tires. Top Speed - 75mph repeatable, 79mph peak in the right conditions. She is my snarling beastie. Full Mod list in description link.
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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 Last edited by Megadan; 05-10-2024 at 01:26 AM. |
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05-28-2020, 10:37 PM | #12 |
Join Date: Mar 2020
Location: NorthEast
Posts: 71
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2019 Hawk 250 -- stock other than changing to a PZ30 Keihin from eBay.
Main jet: 110 Pilot Jet: 45 Needle: 4th notch from top Idle Mixture Screw: 1.5 turns out Altitude: 1000 ft Starts up with little to no choke (finally) and settles into a reasonable idle. No more stalling, sputtering, and warming up for 20 minutes. Feels much fatter throughout the rev range. Definitely more pick up from 50 to top speed. Only issue I have is that once the bike is warmed up -- which doesn't take long now -- and I am riding anywhere from 10 mph up, it stutters or surges (not really a stumble) at around 1/8 steady throttle. Feels almost like a fuel injection model that is hyper sensitive and hunts between throttle on and throttle off. Any ideas? Anyway, much, much better than the stock carb and well worth taking the time to install a replacement. |
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05-28-2020, 11:54 PM | #13 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Quote:
Thanks for digging this one up again. Gave me a chance to revise mine lol. To any new people out there, feel free to throw in your setups as well. I am going to include this as a link in my setup guide, so the more the merrier!
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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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05-29-2020, 11:35 PM | #14 | |
Join Date: Mar 2020
Location: NorthEast
Posts: 71
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Quote:
Yeah, I thought about that but there are so many new threads on jetting issues that I thought I would be referred back to this thread. I'll start a new one. |
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05-31-2020, 09:03 AM | #15 |
Join Date: Aug 2019
Posts: 472
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Bike: 2016 Magician
Elevation:1500' Carb: Factory Jet sizes: 105 Kehein main, 42 pilot Needle setting: Middle of needle Pilot screw turns: 1 3/4 Relevant mods: NGK plug Top speed: Cruises at 55 mph on speedo, haven't done top speed, will take gps when I do. Last edited by Magician16; 06-03-2020 at 03:16 PM. Reason: New info. Top speed 59mph gps. |
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