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#1 |
Join Date: Aug 2016
Posts: 56
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I have over 750 miles on my KPX and I am now hearing some louder tappet noise. Has anyone on this forum checked or adjusted their KPX valves? I'm just wondering what adventure I have ahead of me. I have adjusted valves on my Bashan Storm and my old SL350 Honda. I expect this to be similar. Any thoughts? Thanks.
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#2 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Should be similar to most OHC Hondas. Take off the access caps and set your lash. Specs are likely similar to a crf230 engine.
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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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#3 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,932
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I checked mine when I first got it. The exhaust valve is not too bad to get to. Need to remove a couple of things to make it easier. See post #24 in my thread here. The exhaust valve did not need adjustment, as it turns out.
http://www.chinariders.net/showthrea...t=31297&page=2 The intake valve I was not able to check because of too much stuff in the way. I might be able to get in there with the right feeler gauge set. To set the rear one we may need to get one of those valve adjustment tools similar to this: https://www.amazon.com/Baosity-Unive...05&sr=8-3&th=1 Edit: Specs for the valves are .08 mm intake, and .10 mm exhaust.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself Last edited by TominMO; 10-01-2022 at 09:24 AM. |
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#4 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Yep, valve spec is almost exactly the same as a crf230f engine.
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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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#6 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,685
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I sure will. Going out of town for the weekend so not happening this weekend.
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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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#7 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,932
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Not buyin' it. He is terrified to tackle that intake valve.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#8 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,685
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![]() Nah, piece of cake. ![]()
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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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#9 |
Join Date: Aug 2022
Posts: 175
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I couldn't wait any longer for JerryHawk250 to make a video, so I tackled adjusting the valves today.
![]() I removed the plastics, seat, horn, and bar supporting the front cowling. and I used a couple of pieces of 2x4 to prop up the tank about 4 inches. Once I figured out I needed to do the adjustment at compression, it wasn't that hard accessing both the intake and exhaust valves. (Unfortunately, I attempted to adjust the valves when the engine wasn't at compression, so I don't know how close they still were.) A tappet adjusting tool would be helpful but there isn't much room so it will need to have a short handle. Now that I've pretty much gone through the whole bike and have had the plastics off twice now, I figure I should be able to do the next valve adjustment in 30 to 45 min. The bike started right up and seem to sound a little quieter. Took it out for a 50 mile ride and it didn't miss a beat. |
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#10 | |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,685
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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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#11 | |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,932
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Quote:
![]() IdahoRider, how did you do the intake? What tools? I was planning on buying those specialty valve-adjustment tools and a long set of feeler gauges, specifically for the intake side.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#12 | |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,685
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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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#13 |
Join Date: Aug 2022
Posts: 175
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I used the feeler gauge from this set. I cut down the handle length to the adjustment tools but end up just using the tappet tool to adjust with then a socket wrench to tighten the nut.
https://www.amazon.com/dp/B07K83V9F8...roduct_details Once the tank is propped up there is plenty of room to access the valves. I also emailed Venom yesterday to ask if they have any guides/manuals on how they do the adjustments and they said they would get back to me within 24 hrs. Last edited by IdahoRider; 10-17-2022 at 12:17 PM. |
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#14 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,932
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Thanks. I don't think I had the tank that high, so maybe that was the main problem.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#15 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,685
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If you need more room on the intake side you can always remove the motor mount brackets. That's what I had to do on my Ghost and 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 |
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Tags |
lifan kpx 250, valve adjustment |
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