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Author Topic: 81 CB 750C  (Read 10122 times)

Offline CB MIKE

  • Posts: 91
81 CB 750C
« on: Aug 26, 2016, 13:45:16 »
Hello All,

New to the forum and the café scene. Just brought home an 81 CB750C yesterday. I have plans to convert to café/brat style, mostly cosmetic upgrades along with the standard tune up parts and any necessary repairs. I have been reading a lot about the different models and realize that I may have given myself more of a challenge going with the "C" model. Either way its in the garage now and I'm going to make it work for me.

Currently my to do list is as follows:
-Disassembly and deep inspection of components and hardware
-Remove, disassemble, & clean carbs
-Tighten cam chain (has THE knock)
-New plugs
-New consumables (filters etc.)
-Replace front brake pads (some pulsing at higher speeds) if that doesn't correct issue I'll move to replacing the rotors
-Build custom seat/fender
-Aftermarket tail light, head light, and turn signals
-Drag bars, grips, and eventually gauges.
... and I'm sure there are things I forgot but as the work progresses this list will grow

(PO recently changed oil, filter, starter and solenoid) I'll change the oil and filter eventually but for now its good

I am having a hard time locating a carb rebuild kit. I would like to get the randakks but for my model its sold out. The only others I have found so far are for the "K" models. Are these compatible as long as they are for the same-ish year and DOHC?

I appreciate the information that you all have put out there and look forward to this build. I will post pics throughout the process which may take time as funds are available so be patient. I am attaching a pic of my bike the day I picked it up and my inspiration Thanks
81 CB750C

Offline cxman

  • DTT SUPPORTER
  • *
  • Posts: 2355
Re: 81 CB 750C
« Reply #1 on: Aug 26, 2016, 14:04:14 »
randakks is closed till sept 17 he has inventory its just not showing
1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
1983 cx650 Custom
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others

Offline CB MIKE

  • Posts: 91
Re: 81 CB 750C
« Reply #2 on: Aug 26, 2016, 14:07:16 »
Awesome glad to hear it, I guess I have a few weeks to disassemble and clean them before I order the kit. Thanks
81 CB750C

Offline BigNickel

  • Posts: 43
Re: 81 CB 750C
« Reply #3 on: Aug 26, 2016, 16:03:06 »
I'm also in the middle of a '81 750C build. Glad to see I'm not the only one trying to "tackle" this bike. I think they have great potential despite not being the most desired model. Yours looks super clean to begin with and I'll be following your progress for sure.

Cheers

Offline CB MIKE

  • Posts: 91
Re: 81 CB 750C
« Reply #4 on: Aug 26, 2016, 16:14:36 »
Thanks bignickel, it definitely has potential and I'm looking forward to the project. The bike has some surface rust here and there (unfortunately living in new England it's hard to not find any) other than that I was lucky. I got the bike from a Vietnam vet who took very good care of it and aside from a tune up its pretty mechanically sound. Well work through this together!
81 CB750C

Offline CB MIKE

  • Posts: 91
Re: 81 CB 750C
« Reply #5 on: Aug 28, 2016, 16:09:00 »
So after the first weekend... new drag bars, grips, & mirrors on order. Rear end stripped and seat shaping has begun  (can't afford new right now so I'm working with what I have)










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81 CB750C

Offline BigNickel

  • Posts: 43
Re: 81 CB 750C
« Reply #6 on: Aug 29, 2016, 08:21:25 »
Great start! I like the seat shape.

Offline CB MIKE

  • Posts: 91
Re: 81 CB 750C
« Reply #7 on: Aug 29, 2016, 09:30:51 »
Thanks, it still needs some work. I'm trying to keep the original seat pan just for ease of mounting. Once I get the shape I want I'm going to cut the pan and re-upholster with marine vinyl.
81 CB750C

Offline CB MIKE

  • Posts: 91
Re: 81 CB 750C
« Reply #8 on: Sep 04, 2016, 11:32:44 »
Update:

Decided to use the old leather than re-upholster the seat. I slimmed down the seat pan and screwed the old material underneath. Got led turn signals mounted on new brackets and tail light mounted to the stock fender which I repositioned to clean it up a bit. Electrical wired up (had to get electronic blinker relay for leds) now waiting for the front end parts to arrive.

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81 CB750C

Offline CB MIKE

  • Posts: 91
Re: 81 CB 750C
« Reply #9 on: Sep 16, 2016, 11:19:05 »
I put the drag bars, mirror, grips on, re-assembled the controls and she feels/looks great. Ill post a pic later (at work right now) but I was wondering about the rear suspension. I feel like it sits low in the rear. I know the cb750 "c" was the cruiser style. I have the manual and can replace the stock suspension however I feel like they are too short for the look I'm going for. can someone tell me how much getting longer springs will affect the bike, handling etc. even just to raise it up 1-2"?
81 CB750C