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08-08-2017, 10:05 PM | #2 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,006
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Nah, I don't have my head in the game yet. I am too busy trying to get ahead in other projects, and I just can't get enough flow at the moment.
I will be starting on it here soon though if time permits.
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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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08-09-2017, 11:30 AM | #3 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Boo.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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10-30-2017, 12:02 PM | #5 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,555
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I need to stop reading this stuff. Its got me thinking about getting another head to start playing around with. Besides the port and polishing I'm thinking about decking the head to get the compression ratio up o about 9.5:1. this should gain at least 2 hp minimum. My oldest brother runs a machine shop so the machine work to deck the head isn't a problem. He's a motor head too so won't take much to convince him to get it done for free. lol
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2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 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 Last edited by JerryHawk250; 10-31-2017 at 07:33 AM. |
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11-02-2017, 11:47 PM | #6 | |
Join Date: Feb 2017
Location: Holiday, Florida
Posts: 672
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Quote:
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Dan-O -2018 Tao Tao HellCat - DOA -2016 Hawk 250 - Kitty Hawk - eBay exhaust, Mikuni carb(120 main/30 Pilot), airbox mod with K&N filter, digital cluster, total LEDs, 17/45 sprockets, RK chain, Shinko 244 tires, trunk, aftermarket levers, burrito tube, skid plate, Sargent Cycle Seat... -2003 HD Sportster 100th Anniversary -1999 Buell X-1 Lightning - Race kit, Buell Seat |
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11-03-2017, 04:12 AM | #7 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,006
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If you do plan on buying a head, then make sure to measure the distance between the Head/Cylinder bolts. Supposedly there are minor variations in this pattern between some manufacturers of this engine, so not all of them will match up. I managed to do mine with calipers and the valve cover removed. Was a little annoying trying to get an accurate set of numbers, but doable.
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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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11-03-2017, 07:41 AM | #8 | |
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Join Date: Oct 2016
Location: Houma, La.
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Quote:
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2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 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 Last edited by JerryHawk250; 11-03-2017 at 08:45 AM. |
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11-03-2017, 04:57 PM | #9 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,006
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Quote:
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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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10-30-2017, 12:40 PM | #10 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Do it! With resources like that, what's stopping you?
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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11-02-2017, 08:52 PM | #11 |
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Join Date: Oct 2016
Location: Houma, La.
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Anyone want to donate a head for the sake of valuable research? Anyone? Anyone? Lol. Cheapest I have found is about $55 and not as easy to find as piston and cylinders.
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2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 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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11-07-2017, 02:04 PM | #12 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,006
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For the head only, there is likely just enough room if you can get the head bolts out.
Sorry I haven't gotten around to the bolt spacing yet. I wound up taking all day fixing my Jeep, and then ended up back at work all week. I am going to TRY and get around to it this coming weekend.
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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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11-07-2017, 03:16 PM | #13 | |
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Join Date: Oct 2016
Location: Houma, La.
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Quote:
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2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 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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11-08-2017, 02:47 PM | #14 |
Join Date: Nov 2017
Location: Marseille, France -> Conakry, Guinea
Posts: 1,481
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Have you guys thought about something like this: https://produto.mercadolivre.com.br/...-preparado-_JM
after the head is ported? I've not really heard anything about people using alternate camshafts in their CG series motors, but it'd definitely be interesting to see what a cam would do to wake it up! |
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11-09-2017, 11:42 AM | #15 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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I'd also be interested. Since there is only one lobe, neither valve event can be optimized, but a little extra lift and duration sounds like fun (as long as the valve doesn't kiss the piston). The cam that is referenced in the link is for a 125, so I'd be curious to compare it with the stock 200/230 cam profile.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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