02-09-2018, 09:54 AM | #76 | |
Join Date: Sep 2014
Location: Blue Ridge Mtns Ga
Posts: 437
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Mark 2015 Haosen Hawk 250 2014 CRF250L 2014 CB500X Rally Raid |
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02-09-2018, 01:16 PM | #77 | |
Join Date: Jan 2018
Posts: 43
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Also thanks to everyone thats helped get this bike up and running again! I appreciate everyone's help! |
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02-09-2018, 04:58 PM | #78 |
Join Date: May 2013
Location: finger lakes NY
Posts: 2,061
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as an fyi, it may have just been your spark plug.... jut had a BRAND NEW ariens snow blower come into the shop for a no start.... spark plug sparks, but weak....LOL slaped an NGK in (stock was a chinese Torch brand due to the ariens using LCT chinese engines) and fires right up.... i am a big advocate of getting rid of the stock spark plugs and switching to NGK or even champion (dont like them as much though...)
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09-29-2019, 01:06 AM | #79 |
Join Date: Jul 2019
Location: Arkansas
Posts: 11
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Hello everyone.
Old thread but a project I am just about to do myself. I have read the entire tread and still a bit confused on the ring gap. The final numbers were never actually stated other than compression rings were ok at .016in. My new compression rings measure at .015in and new oil rings at .010in It seems as though I will have to shave quite a bit off of the oil rings to meet the .12in through .035in spec. Is this correct or am missing something. Could someone verify if i have this right? Or even provide numbers that actually have been used? Thanks in advance. |
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09-29-2019, 01:40 AM | #80 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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On a liquid cooled engine it is .004 times the cylinder bore in inches. For air cooled this is often opened up to .005 or even .006 times the bore in inches. .005 x 2.638 - .145" gap and .006 x 2.638" = .158" gap. So basically anything around .15 to .16 will be fine. That amount of gap should also suffice for the second ring since these aren't exactly high performance motors. The oil control rings will not suffer as much from expansion, and most ring manufacturers typically state all oil control ring gaps at around .015 inches. The CG125-150 engines spec the ring gap tolerance as .2mm to .5mm, aka .008 to .019 inches. I would just file them to reach .015 inches and call it a day, that is only shaving 5 thousandths off, which isn't much at all and well within spec.
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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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09-29-2019, 02:46 AM | #81 |
Join Date: Jul 2019
Location: Arkansas
Posts: 11
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Megadan.
Thank you for clearing things up. I had done some research along with reading this thread. I had read bore x .004. but with .005 the numbers seamed closer. I would never have guessed bore x .006 though. So I was on the right track with a little filing on the oil rings. And I was guessing that .015 would be a safe bet but wanted further verification. Thanks for your reply and I hope it will benefit others in the future. |
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09-29-2019, 07:27 AM | #82 |
Join Date: Sep 2019
Location: Maine
Posts: 98
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What an interesting thread! I hope I never need the information contained here but I am subscribed now just in case. These pictures are great along with all the specification info.
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2019 Bashan Brozz 250 2019 Honda Africa Twin CRF1000L |
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