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11-13-2018, 11:45 AM | #1 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Barnone, I suspect you have a cat hidden in that muffler. If so, I bet there's more power hiding in there.
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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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11-13-2018, 11:51 AM | #2 |
Join Date: Feb 2007
Posts: 1,357
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Yep. There is cat in the header pipe. Not going to mess with that now. Also doubt that it would make much difference in power.
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11-13-2018, 12:11 PM | #3 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,713
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From my experience on the hawk it makes a big difference. I would do it after you have it 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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11-13-2018, 02:17 PM | #4 |
Join Date: Feb 2007
Posts: 1,357
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Removed the cat on many bikes in the past with little or no difference in performance. Just more noise so I will leave it be.
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11-13-2018, 03:40 PM | #5 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,713
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I guess it's different from bike to bike. Hawk cat was pretty restrictive. It was like pulling a cork. Just removing the cat I had to up the main jets from a 110 to a 115 and the 110 was a little on the fat side with the cat. Porting the head opened it up even more. From looking at the picture I really don't see a cat in the header unless it is in the muffler itself.
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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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11-14-2018, 09:19 AM | #6 |
Join Date: Feb 2007
Posts: 1,357
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The owner's manual has a photo that shows that cat in in the header pipe close to where the muffler is so I will leave it be. The engine has a decent sound that I am surprised passed ETA.
The engine is a 165fmm Honda OHC CB250 clone at 223 cc. The valve adjust adjustment clearances on the metal tag on the frame show a value of .02-.04 mm for both valves. Does that seem right? |
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11-14-2018, 10:25 AM | #7 | |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,713
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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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11-15-2018, 07:51 AM | #8 |
Join Date: Feb 2007
Posts: 1,357
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Do I need an angled feeler gauge to check the valve clearance on the CB250 OHV clone engine? I have straight feeler gauges that I guess could be bent?
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11-15-2018, 07:58 AM | #9 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,713
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From looking at your pictures it looks like you could use a straight feeler gauge on the exhaust. Doesn't look like you have much room on the intake side. You may have to use an angled feeler gauge on the intake.
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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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11-14-2018, 11:36 AM | #10 |
Join Date: Apr 2016
Location: Chesapeake, VA
Posts: 207
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Oooh! Another CB option. That is great to know. I wonder what kind of speed you can get from her.
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11-15-2018, 07:52 AM | #11 |
Join Date: Feb 2007
Posts: 1,357
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Me too! I won't know for several weeks since I am in the break in period.
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11-16-2018, 06:31 PM | #12 | |
Join Date: Nov 2018
Posts: 4
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Quote:
What speed are you getting in the break in period and does it struggle to get there? Also are you loctiting everything? |
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11-16-2018, 07:23 PM | #13 |
Join Date: Feb 2007
Posts: 1,357
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Owned 50 or more bikes ( British bikes, Japanese bike, Chinese bikes, Russian bikes) over the last 60+ years and never loctited any of them and never had a problem with parts falling off. Seems to have good power but I am not pushing her yet. Also need to check the speedometer accuracy.
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11-16-2018, 10:42 PM | #15 |
Join Date: Feb 2007
Posts: 1,357
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We shall see when I need to do the first valve check/adjustment. Be a while.
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