1982 CB750C Cafe Build

smokinpol

New Member
Hey guys, i have been here for a while lurking and using the resources available. After seeing many inspiring build posts, i have decided to share my progress with you. I am getting close to completing the build, but ill post the progress chronologically from the beginning.

In late February 2014 I found a 82 CB750 on CL a couple of hours away and went to check it out. The bike rode fine, it had a couple quirks with the kill switch, horn, and ignition. The price was right and I bought it on March 3 2014.

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After getting home and doing some research i realized that the DOHC and specifically the Custom model was more difficult to "cafe" then the SOHC bikes. Either way i was up for the challenge.
I'm currently working on my degree and finishing our house. With time being limited my initial goal for the bike was to do a mild tear down, change the seat and ride it for the summer. That goal didn't last long.

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The custom tank didnt suit what i had in mind and i really liked the look of Benjis tanks, i changed my mind after reading some reviews. I liked the looks of F/K tanks and I found a F tank off an 81 on ebay and bought it. The tank was significantly larger so i planned on fabricating a new mount. This is where i decided to do a full teardown and rebuild it from the ground up.

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I ordered a loop and seat from Benji. Detabbed the frame and welded the loop.
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I found a 82 super sport at a vintage cycle yard in Boise ID. Ended up getting the tank mount and some 37mm forks.

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I was going to mount my turn signals directly behind the shock mounts.
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Luckily my grinding skills are better than my welding skills. I was happy with my result. My recently acquired forks are in the background.
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Ill post some more stuff soon.
 

bombsightcycles

Active Member
Re: 1982 CB750 Custom Cafe Build

yes...please do...I have 2 1980 CB750F Super Sports...one restored...and one going cafe...someday...
 

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smokinpol

New Member
I was concerned that i had removed too much metal when i cut out the old,tank mount. I decided to use reinforce those areas with some 1.25" tubing.
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The turn signal i ordered were too large to fit behind the shocks. I used some round rod to move them a little further back. Tapped it and bolted them up.
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The engine needed a valve adjustment and to be repainted. One of the exhaust studs was broken and i was unable to extract it. Took the head off to have a machine shop do it and inspect the head.
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The pistons had some carbon buildup.
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The head came back clean and flow tested well. Did some cleaning on the block and pistons.

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Reinstalled the head with a new cometic gasket.
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Tune-A-Fish

BOTM LOSER Proudly Deplorable
Were not all purists... I liked the bike in stock form and would like one like that to have as a short run tour bike, but it looks like you might just pull this off for a nice "cafe" inspired sport bike... plans for suspension?

Logged in

RD :eek:
 

smokinpol

New Member
I installed progressive suspension fork springs up front and P.S. 12 series shocks/springs.
I didn't mind the bike in stock form, it rode well. Just wanted a different look.
 

Freb_mc

New Member
Following. I am doing something similar with an 82 750c as well, currently it is running and riding just fine in stock form so I am still in the planning stage, and accumulating parts. But your build is looking good so far! Keep it up and post some more updates soon.
 

smokinpol

New Member
SilkySmooth750 said:
I'm on board! Looking good so far. What do you think of the Benji seat?
I like the shape of the seat, that pad lacked support, so I had a local upholstery shop make me a new one.
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Sent from my VS985 4G using Tapatalk
 

ArBrnSnpr

Been Around the Block
Coming along nicely! Your new seat pad is a huge improvement over what Benji's sent it out with.
 

smokinpol

New Member
Commies after powdercoat wrapped in new Bridgestone tires.

Sent from my VS985 4G using Tapatalk
 

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smokinpol

New Member
Most things back from powdercoating.

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smokinpol

New Member
Here's some of my wiring work tucked up under the seat. I got a harness from sparck, then l replaced the remaining factory connectors with new ones. Used braided looming on all other wiring.

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smokinpol

New Member
Here is the mostly finished product. Its been a while but teardown to rebuild took me 1.5 years. All I have left is to design and cnc my rearset mounts and tweak with the carbs.
 

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