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    Frame Cutting Help

    Hello all, Working on installing hoop on my ‘81 750K. As I am a bit down the path I have two questions. 1) any recommendations n how to get the bottom half of the frame pipe out of the support without cutting the support gusset? (Pic 1) 2) currently deciding between two methods in the hoop...
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    Any one know what this is?

    Rebuilding my first engine. 81 cb750k. during the disassembly this little guy "fell" out when I had the oil pan off and was disassembling the lwr case. Not sure what it is nor where it came from.:rolleyes:
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    81DOHC LWr Crankcase Bolt Pitch

    Does anyone know the thread pitch on the M8 bolts for the lower crankcase? Appears to be 1.25 but I just wanted to check with those that may have more sophisticated ways of confirming.
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    Any good DOHC ASSEMBLY Videos

    Are there any good rebuild Assembly videos out there? Many tear down videos. Just curious if there are any assembly videos.
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    My First “Oh Shit” Moment -Rebuild

    Doing my first ever engine rebuild, learning along the way. I am currently Re-assembling my 81 750 engine and I have had my first “oh-shit” moment. When installing the primary chain “guard/guide” the head of one of my bolts snapped off. How do you remove?
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    Assembly of crankcase

    Putting my crankcase back together and what are some watch outs for common forgotten items. Ie I keep hearing mention of the two locating pins (have these) and a small oil ring. Not sure in the latter. What oil seals are in the case?
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    81 DOHC Rebuild- anyone know what this part is

    Doing my first engine rebuild and while I was tearing down the motor, working on getting the crankcases separated (I think) I had the motor on its side and this guy fell onto my worktop. Not sure what it is our where it came from. Any thoughts?
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    81 750K Gasket kit

    I can’t find a gasket kit as it seems they has been discontinued now. Can they still be had? Any suggestions on quality aftermarket?
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    Lwr Case - Is this a crack?

    Just inspecting and saw this. Not sure if this is a crack. Nothing is visible from the inside of the case. So not sure what’s going on here if if it is any concern.
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    Main Bearing Look

    Tearing down my first engine and wanted to get some seasoned eyes on my main bearings. They look good to reuse? I am Picking up some plastigage so I know that will be the determining factor but just asking if The old ones pass the eye test.
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    New Main Bearings

    Rebuilding engine on my 81 750. I know I have seen posts on here from amc about the "hard/expensive" to get main bearings for the DOHC. On Partzilla they are $17.50 EACH. Is that accurate that I am going to shell out $180+ on main bearings? Any places you know where I can purchase them from...
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    Best place to buy parts

    Hey all. Just picked up my first 81 750. Doing attempting an engine rebuild and was wondering where the best place to buy parts online in the US(southwest). Just curious where you all shop. Thanks
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    Opinions and Suggestions

    Hey all been lurking and reading a ton on here as of late. I’ll skip the long intro (another thread)and cut to it. Picked up an 81 CB750 for a few bucks with the goal of just learning about motorcycles and engines. (Zero prior experience). no real hard goals other than that. Started with an...
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