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10-12-2020, 10:41 AM | #1 |
Join Date: Jan 2019
Location: Silver City New Mexico
Posts: 290
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About to upgrade the cg 229 asking for input
I am about to (mid Nov) try to get a little more out of my Recon 250 engine as others have done but wanted to ask whether certain things really need to be done?
Just like others i am aware of the limitation of the engine but for the most part i am looking at more low to med grunt to be able to accelerate quicker and maintain speed on hills , ideally would like to maintain 65mph in high elevation (6000ft) . Top speed is not my goal but 70 mph would be nice if needed. So i have a mild cam and roller followers on order (i think its the same one others have used?) 4 degree advance key way. I plan on a 1 mm shave of the head plus port and polish. Just finished reading the post and link one legged put in about a sleeve and piston kit to go to a 69 or 70 mm piston, which i'm seriously considering as my engine is about to be worked on any way (cost about $100 with shipping) Question : do i need an upgraded CDI box if so does anyone recommend one ? Is my pz30 carb big enough/ flow enough or should i step up to a different one ? Is the stock air box and filter able to flow enough air or is a pod filter set up the way to go? Currant gearing is 17/43 and i have the ebay cfr 230 exhaust on the bike already. I would appreciate your thoughts and advice or even suggestions . Oh what about an oil cooler? i am never in traffic but would like to ride further 50 miles on open road to explore more trails? |
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10-14-2020, 01:59 PM | #2 |
Join Date: Jan 2019
Location: Silver City New Mexico
Posts: 290
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not exactly the response i was expecting
I will try my best to get some real time results of before and after the mods. to share with others when i'm done. |
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10-14-2020, 02:04 PM | #3 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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The only thing i see on that list that i would change is upgrade to a smooth bore PE30 or PKW30 carb with a pod filter. The PE30 will be the better for easy access to idle speed screw.
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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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10-14-2020, 02:10 PM | #4 | |
Join Date: Dec 2018
Location: PNW
Posts: 983
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Quote:
I think you have a great idea to get some "real time" results. I suggest starting a thread to detail your progress with good pictures. I suggest some way of measuring progress starting with where it is at now. Most people think of speed but maybe think about any other ways of measurement. Gonna be a lot of fun I say! |
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10-14-2020, 03:11 PM | #5 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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I wouldn't worry about the CDI. The 4 degree timing key will be a big improvement. I've played around with the so called performance CDI's and didn't feel any difference. Eventually I'll install the 4 degree key on my Hawk. It really woke up my X22R.
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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 Last edited by JerryHawk250; 10-14-2020 at 04:04 PM. |
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10-14-2020, 03:15 PM | #6 |
Join Date: Nov 2017
Location: Marseille, France -> Conakry, Guinea
Posts: 1,481
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Just make sure you've got a machinist who will do the work on the cases for the big bore. I understand the case mouth needs to be bored out a little bit. It might interfere with the oil passages (the do in the same engine family with some of the smaller motors, the '250' is a small redesign in some ways), so that might need to be welded to make the oil passages work as intended. Keep us posted, I'm fairly certain no one has done the bb kit on here.
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10-14-2020, 04:21 PM | #7 | |
Join Date: Jan 2019
Location: Silver City New Mexico
Posts: 290
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Quote:
Thanks Jerry for the insight on the carbs. i will get one of those ordered with a pod filter to match as well as jet assortments to match my elevation (6000ft). Also good to know about the ignition box (CDI). Many moons ago i bought a brand new Nissan 1400 pickup , in the owners book was a set of smaller main jets and a set of bigger air bleed jets for use at higher elevations (6000ft), the instructions called for the jets to be installed , the timing to be advanced 4 degrees and a recommended set of spark plugs that if i remember were 1 heat range colder? This was from the factory . Thanks for the input Paul |
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10-14-2020, 04:48 PM | #8 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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If you plan on riding trails at low speeds I would consider an oil cooler. These engines will stay cool as long as you are riding up top speed. Slow trail riding will tend to heat the engine up. I have a head temperature gauge on my hawk and my hawk runs the hottest when I'm out on the trails tractoring along. I've thought about installing a couple of small fans on the oil coolers I can switch on when needed.
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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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11-09-2020, 10:00 AM | #9 |
Join Date: Jul 2018
Location: nw of atlanta
Posts: 169
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As I understand, and was stated in the post about the aliexpress larger bore, the crankshaft and connecting rod would need to be replaced.
Did you go with the larger bore? How did it work out? Did you install the roller followers? IOW, any progress to report? tom
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vertical and above ground - my daily goal |
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11-09-2020, 05:15 PM | #10 | |
Join Date: Jan 2019
Location: Silver City New Mexico
Posts: 290
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Quote:
I decided to not do the big bore kit at this time as it was pointed out i may get into the oil passages plus i would have to do a case split , take out everything then bolt up the cases to send to the machine shop. I also did the math on what a 70mm piston would be in terms of cc ? the figure i came up with was right at 250cc ?? so i assume the 271cc that one legged had mentioned must have an increase in stroke to get it? It would be a fun project to do the crank kit and sleeve/piston kit but i would prefer to work from another engine (maybe one that is in need of a rebuild anyway) so my bike would not be down. When i pulled the top of my engine apart i noticed the piston is still 'down the hole' about 3mm when at TDC so i believe there is room for at least a 2.5mm stroke increase without having a taller engine. I did put in the bigger cam and roller followers which was just bolt in stuff. I pulled the flywheel and added the 4 degree timing key. I finished porting/polishing the head this morning so should get that back on tomorrow . I plan on just putting the stock intake and carb /airbox on the engine to get it started (known entity) and after its up and running (on the bench) i will mount the new intake, carb and pod filter to get the jetting dialed in. Paul |
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11-09-2020, 05:38 PM | #11 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Paul, I think you will be more than happy with the power gain with just those mods.
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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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11-10-2020, 08:12 AM | #12 | |
Join Date: Aug 2019
Location: Bay City, MI
Posts: 398
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Quote:
With a good carb/pod filter, full exhaust, cam and porting on the head, timing advance key the 229 has really good power for its size and is still reliable and durable. |
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