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08-04-2020, 11:02 AM | #1 |
Join Date: Aug 2020
Posts: 8
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ah the struggles of a free dirtybike
Hey gang, this'll be my first thread here, and the sole reason for making this account is to ask for support about my baja dr125. My biggest problem cause here is my faulty torque wrench, but on top of that, I snapped a head bolt... it can probably be imagined what words were said when the torque wrench gave and slammed my hand into a sharp point on the bike.... (yaaaay) So at this point, Im looking for repair options. Running the bike on just the 3 bolts is likely not an option, considering the head could be warped, Ive thought about taking the other end of the bolt out, and cutting the snapped parts, and welding it shorter, but Im unsure of how much stress that joint will be able to take. I called up baja, and they gave me a number to call, but Im not liking the odds of it working. Should that fail, what are my options?
Thanks for readin, hopefully someone here has some insight about this predicament |
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08-04-2020, 11:22 AM | #2 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Welcome Aboard! I'm assuming this is a horizontal 125cc engine. A quick search on ebay and here's what i found. Just verify the length and stud size. https://www.ebay.com/i/114093840489?...BoC2dgQAvD_BwE
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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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08-04-2020, 12:30 PM | #3 |
Join Date: Aug 2020
Posts: 8
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Thanks for the response broskii, I took out the bolt, and measuring it looks to be around 4 15/16 (126mm), but thats likely slightly stretched out due to the breaking area, so maybe more like 120mm. Width is probably 11-12mm, But I cant find anything with that size on ebay, is there possibly anything else out there I can look for?
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08-04-2020, 12:36 PM | #4 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Can you post pictures of the engine? Also post a picture of the engine number.
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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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08-04-2020, 12:48 PM | #5 |
Join Date: Aug 2020
Posts: 8
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08-04-2020, 12:57 PM | #6 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Okay, that a Honda CG 125 clone. The stud will be 8mm x 122mm. I'll see what i can find.
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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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08-04-2020, 01:59 PM | #7 |
Join Date: Aug 2020
Posts: 8
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Thanks for sharing that, I did some more looking based on the part number for that, and found these, https://www.ebay.co.uk/itm/223328530089. Theyre still out of country, but they ship a little bit faster, and cheaper, which is nice. What are your thoughts?
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08-04-2020, 03:23 PM | #9 |
Join Date: Aug 2020
Posts: 8
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I have another idea. It almost seems like there would be enough room to use a coupler, what are y'alls thoughts on that? (if this were a nice bike, I'd always prefer always to get correct parts for it, but since this is my experimental bike, I wouldn't mind taking a few shortcuts)
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08-04-2020, 03:37 PM | #10 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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The hole that that stud passes through is an oil passage so you don't want to restrict that in any way. You could possibly use a harden all thread rod but would need to machine down the center portion. Or swap one of the other studs to that position and use the all thread rod there.
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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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08-04-2020, 04:32 PM | #12 |
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Join Date: Oct 2016
Location: Houma, La.
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I totally agree. But i've seen myself do some jerry rigging on old stuff that i didn't want to sink money into. If it crapped out then it became recycle scrap. 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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08-04-2020, 07:53 PM | #13 |
Join Date: Aug 2020
Posts: 8
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Thanks for stayin tuned gents. I went ahead and decided to weld it, it aint a great looking weld, but functional enough. Should this fail, I'll just do the 212 swap all my buddies keep telling me about. This motor is pretty worthless, so I really dont feel like sinking money into it. I put it all back together, torqued 3 of those down to 20ftlbs or so, and the broken one to probably 10ftlbs. If it breaks, oh well. Ill probably just get allthread next time
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08-05-2020, 05:13 AM | #14 |
Join Date: Nov 2017
Location: Marseille, France -> Conakry, Guinea
Posts: 1,481
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It won't be a straightforward swap to a 212, that's a completely different engine family.
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