Cb750 what to do project...

cbrianroll

cbrianroll

Coast to Coast
Just picked it up from a buddy, title is in a safe until next week so I can't verify the year, he said 78. If I read the engine vin chart right it's a 74 motor, I could be wrong though. I could not find a typical tag on the frame, I was looking for one similar to the gl1000. It's got some cheap parts, headlight, blinkers, seat, etc., side cover has awesome j.b. weld repair, poor assembly of parts. It does have dynatek ignition and updated wiring so that's a plus, 4 into one...loud. Runs and rides but the carbs are out a bit. Not sure if I should flip it or fix it up, I hate the bars and seat so those would go right away. Either way it needs tidied up so here it is...
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Frame numbers will be stamped on the left side of the neck. They may be covered by paint.
 
Nothing yet.....the little tag says "assigned number"....so maybe something weird happened and that's the legal tag?
 
Assigned number means it was either homebuilt or had some issue with the VIN. The state assigns a VIN number in those cases. So I think you have a 1974 bike but the new VIN was assigned in 1978 which would make sense.
 
The earlier frames are shorter than the 77-78 frames. Unfortunately, the rear hoop modification has done away with easiest ID which is the distance from the shock to the fender mount. Just looking at the pictures it appears to be an earlier frame. It may not be a 74 but certainly in the range between 70-76.
 
Lose the pods and I bet it will run better. Looks like the frame still has the stock air cleaner mounts so find a stock unit. I think you will be happier. I had a bitsa bike a few years ago which was a 77 motor in a 75 frame. I replaced the 77 carbs with earlier carbs and pods. It frustrated the hell out of me. I finally replaced the pods with a stock air cleaner unit and a K&N filter and it ran great. My current 750 Rodekilt project will be a 77 motor in a 73 frame with some added touches.
 
Stock box is the plan, eventually. Gonna ride a bit this summer than paint and powder coat this winter. Did these have center stands orginally? Looks like theres some remnants underneath...

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One of the first things I'd do, unless you're 5' 4", get stock length rear shocks (Hagon are a good value go-to for lots of us) and raise the front end to normal height.

Stock airbox as you're already on the way to, and you could cut off that rear hoop and put something with an upturn on it - not just flat. Or cut it off, make sure there is bracing across the frame and put a new seat on.

Flip the headlight ears upside down. I think they're designed to be mounted in a more horizontal fashion and would likely look tons better.

Some 'Norman Hyde M' style handlebars would be nice on it, or just some standard 'super bike' bars. Low rise, more comfortable and better suited to the bike.

My mind is fooling me, telling me the forks are bent. Is that possible?
 
Yeah, it's got alot of "custom" work to undo....
I think it's an illusion seemed to ride fine and it looked good from the seat.
 
Tim said:
One of the first things I'd do, unless you're 5' 4", get stock length rear shocks (Hagon are a good value go-to for lots of us) and raise the front end to normal height.

Stock airbox as you're already on the way to, and you could cut off that rear hoop and put something with an upturn on it - not just flat. Or cut it off, make sure there is bracing across the frame and put a new seat on.

Flip the headlight ears upside down. I think they're designed to be mounted in a more horizontal fashion and would likely look tons better.

Some 'Norman Hyde M' style handlebars would be nice on it, or just some standard 'super bike' bars. Low rise, more comfortable and better suited to the bike.

My mind is fooling me, telling me the forks are bent. Is that possible?
Click to expand...
Have to agree on all of this. Superbike or Euro bars will make it much more rideable. Stock airbox and filter lets you have the original jetting to baseline. Too many CBs had pods installed for the look before the owner ever rode it.
 
Tim said:
One of the first things I'd do, unless you're 5' 4", get stock length rear shocks (Hagon are a good value go-to for lots of us) and raise the front end to normal height.

Stock airbox as you're already on the way to, and you could cut off that rear hoop and put something with an upturn on it - not just flat. Or cut it off, make sure there is bracing across the frame and put a new seat on.

Flip the headlight ears upside down. I think they're designed to be mounted in a more horizontal fashion and would likely look tons better.

Some 'Norman Hyde M' style handlebars would be nice on it, or just some standard 'super bike' bars. Low rise, more comfortable and better suited to the bike.

My mind is fooling me, telling me the forks are bent. Is that possible?
Click to expand...
+ 1 on this. I put Hagons on the GL1000 and they are excellent for the price. Better than the last 2-3 sets I tried of aftermarket and used OEM. They make model specific sprung units as well. Mine were designed for the GL1000 specifically, they have a model designed for the CB750 as well/
 
Something new to learn with carbs...apparently the sync adjustment is on top of the carbs with an air screw on the body. Not at home but would like to read up a bit....anyone know what model those are or what year they would be on? The service manual I have shows the adjustment by the air screw.
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