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#1 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Venom X22R 250 performance mods
I got all my parts in and getting ready to start the disassembling of the bike in the morning. I was going to start tonight but got some bad weather coming through right now. I'll video and document the whole process including the porting of the head. Hopefully I won't have to remove the engine which will make it much quicker. Here's a few picture of the surgery table. Lol
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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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#2 |
Join Date: Feb 2020
Posts: 187
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Awesome Jerry! I can’t wait to see your processes and learn from them so I can do my own build in the future!
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2019 Venom X22R K&N pod air filter, removed cat, 105 main jet, 36 tooth rear sprocket, RK racing 428 chain, oil cooler, NGK plug, bar risers, aftermarket mirrors, Grab On grip covers, phone mount/charger, Pro Grip tank protector, Chase Harper tank, tail, and saddle bags. |
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#3 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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I wanted to get started tonight but the sky fell out and wind is blowing . I wasn't getting stranded in my shed for the night. Lol. At least the weather is going to be nice and cool tomorrow.
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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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#4 |
Join Date: Feb 2020
Posts: 187
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Heck yeah. I like that paper shop manual too. That’s nice to have on hand.
My only purchase tonight was the matching set of Chase Harper saddle bags. I needed just a little more cargo capacity than just the other two bags.
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2019 Venom X22R K&N pod air filter, removed cat, 105 main jet, 36 tooth rear sprocket, RK racing 428 chain, oil cooler, NGK plug, bar risers, aftermarket mirrors, Grab On grip covers, phone mount/charger, Pro Grip tank protector, Chase Harper tank, tail, and saddle bags. |
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#5 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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I printed the manual out today. Lol I'm ready for sure.
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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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#6 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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You let a storm stop you? This was your perfect chance to do a Frankenstein film parody.
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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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#7 | |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Quote:
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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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#8 |
Join Date: May 2006
Location: Yuma, Arizona
Posts: 9,055
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Jerryhawkenstein…(cue Beethoven music and lightning)
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"They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard |
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#9 |
Join Date: Oct 2016
Posts: 347
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Nice, new pistons and cam, are they thinner gaskets too? I understand cam's and potentially increase compression with thin gaskets but how does a different piston make gains? Is it just in the combustion geometry? I'm a noob when it comes to engines.
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Electrician & Electronics Tech 2014 Honda CB500XA 2016 CSC TT250 1976 Honda CJ360T 2022 Honda Navi |
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#10 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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High compression forged piston. 11:1 compression and a lighter and stronger piston.
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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 |
Join Date: May 2015
Location: Houston area
Posts: 1,902
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Do you have a template for the porting or do you plan to just raise them a bit?
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"Its not WHAT you ride; its THAT you ride" |
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#12 |
Join Date: Oct 2016
Posts: 347
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Oh so the piston is longer to further increase compression and recessed to prevent hitting all while made of lighter material? The compression rating on a piston is what it would alter the compression too from stock? I always thought it was compression rating the piston will reliably survive.
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Electrician & Electronics Tech 2014 Honda CB500XA 2016 CSC TT250 1976 Honda CJ360T 2022 Honda Navi |
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#13 |
Join Date: May 2015
Location: Houston area
Posts: 1,902
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If you had completed the hop up during a terrible storm, when it started, your engine could have sang:
"I was born in a cross-fire hurricane And I howled at the morning driving rain But it's all right now, in fact, it's a gas"
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"Its not WHAT you ride; its THAT you ride" |
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#14 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Well I got her done. I did take pictures and video but won't be tonight. I have other things I need to take care of but will get then up as soon as I can. I couldn't remove the head and cylinder with the engine bolted to the frame. I unbolted the engine from the frame and let it sit on the bottom of the frame. I was able to tilt the engine to the side a little and removed the head and cylinder. I wasn't to bad. Better than unhooking all the wires and whatever else and removing the engine. The head was about like my hawk head. Exhaust side was restrictive and intake needed a good bit removed right where the intake bolted. Probably 27- 28 mm hole. I did some port matching on the intake side. Now it's a full 30mm. I used a full thickness stock head gasket so my compression ratio is about 10.5:1. I'll probably do a thin head gasket once the engine is broke in and rings are seated.
I got her all back together and she fired right up. Definitely has a thump to it now. I took it out for a short ride to break in the cam and seat the rings. No WOT runs but you can feel more power on the low end and a good bit more on the mid and upper rpm's. I did have to go from a 110 main jet to a 120 and will probably have to go to a 125. I didn't get to install my AF gauge so once I install it I'll fine tune it. I'm happy with the results so far. I'm sure it will feel even better once broke in. ![]()
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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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#15 |
Join Date: Feb 2020
Posts: 187
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Wow. Finished it in a day. That’s awesome, Jerry!
You’re making me REALLY want to go ahead and pull the trigger on the rest of my mods.
__________________
2019 Venom X22R K&N pod air filter, removed cat, 105 main jet, 36 tooth rear sprocket, RK racing 428 chain, oil cooler, NGK plug, bar risers, aftermarket mirrors, Grab On grip covers, phone mount/charger, Pro Grip tank protector, Chase Harper tank, tail, and saddle bags. |
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