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12-23-2017, 09:28 PM | #1 |
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Join Date: Oct 2016
Location: Houma, La.
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Hawk250 Port & Polished Head
Today I decided to port, polish and deck the head. In the process of reinstalling the valves my valve spring compressor slipped and things went flying. I lost one of the valve spring retainer keeper and have spent the pass couple of hours looking for it with no luck. If anyone has a spare just laying around I would be happy to take it off your hands.l haven't had a chance to see if I can find online yet. I'm sure it will be on a slow boat from China. The pour girl is all apart in the shed just waiting for the ported head.
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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; 04-24-2018 at 10:28 AM. |
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12-23-2017, 09:57 PM | #2 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
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12-23-2017, 10:00 PM | #3 |
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Join Date: Oct 2016
Location: Houma, La.
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I lost one of the keepers.
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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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12-23-2017, 10:04 PM | #4 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,008
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Same site you linked a complete head from has full valve kits. I just ordered one a few days ago because I sacrificed the valves my head came with after I found flaws in the seating surface. The whole kit is cheap enough that it makes it worth buying. Can't beat having spare everythings (valve stem seals, extra shims, etc). Just measure those stems and order accordingly. Quality is on par with factory at least.
5.5mm valve stem. http://www.motopartsmax.com/index.ph...h/21_132/eID/8 6.5mm valve stem. http://www.motopartsmax.com/index.ph...h/21_132/eID/8
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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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12-23-2017, 10:14 PM | #5 |
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Thanks guys. I just ordered them from CSC. Laws of the universe. If something can go wrong it will.
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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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12-24-2017, 01:03 AM | #6 |
Join Date: Feb 2016
Location: George West, Texas
Posts: 4,097
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It's under the refrigerator. They run for dark places everytime
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***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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12-24-2017, 06:53 PM | #7 |
Join Date: Nov 2016
Location: robertsdale alabama usa
Posts: 1,007
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just as soon as the package arrives it will be laying right on top of the bench in the way!
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1991 harley heritage softail classic 2016 hawk kaw h1 400 tripple 13' long chopper in progress 2009 johnny pag bar hog 2004 hd electra glide ultra classic shriner edition 1997 harley davidson 1200 sportster 1972 harley davidson amf sx250 |
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12-25-2017, 08:07 AM | #8 |
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Join Date: Oct 2016
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Yes , that's usually how it works. 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 |
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12-23-2017, 10:16 PM | #9 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,008
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Hopefully they use the same valve stem diameter. That is the only unknown with the TT250. The heads may interchange, but there were two valve stem diameters used depending on who built the head.
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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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12-23-2017, 10:18 PM | #10 |
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We shall see. Right now I'm dead in the water. Have to take a chance
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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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12-23-2017, 10:27 PM | #11 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,008
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Look at the bright side. It gives you plenty of time to work and make it the best port job ever.
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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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12-24-2017, 12:15 AM | #12 |
Join Date: Dec 2017
Posts: 11
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Haha! Right on Megadan, that is very true!! I would love to see how much horsepower one can extract from the hawk head with lots of time and effort towards porting and polishing!
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12-24-2017, 02:05 AM | #13 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,008
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Silva did a great basic PnP with a .7mm head mill. His results, while not quantified, required 1 1/2 steps up in main jet size, which is the same step that is required for an intake and exhaust, and a 5mph increase in top speed (while also being at 6500ft). Roughly this equates to a 2-3hp increase, which is nothing to sneeze at. His results are easily repeated by anybody with a rotary tool and basic sanding rolls and grinding stones. http://www.chinariders.net/showthread.php?t=20362 My own thread, with more aggressive port work as well as some chamber work. (port work begins on page 5 post 71): http://www.chinariders.net/showthrea...984#post270984 I am also going a step further with a VM30-83 carb, but even the stock sized PZ30/VM26 can support these engines with head work. I am sure Jerry will take lots of pictures, and even entertained doing a video. I know his plans are to go a bit more aggressive like myself. Head porting and milling has been proven to gain at least 3 and upwards of 6hp in some cases, depending on how aggressive the port work and how high the compression is increased.
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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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12-24-2017, 07:13 PM | #14 | |
Join Date: Dec 2017
Posts: 11
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Quote:
If you guys get really good with Hawk cylinder head porting, you guys should consider buying a bunch of stock heads and sell them to the rest of us with your ported & polished work done to them. I'd buy one for sure. |
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12-25-2017, 08:11 AM | #15 | |
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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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