cb750 frame

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scar1
Posts: 12
Joined: Sun May 19, 2013 2:01 pm

cb750 frame

Postby scar1 » Fri Aug 02, 2013 11:57 am

can I put a 1980 cb650 engine in a 78 cb750 frame?

MiGhost
Posts: 379
Joined: Tue Jun 07, 2011 2:30 am
Location: South Central Mitten

Re: cb750 frame

Postby MiGhost » Fri Aug 02, 2013 12:53 pm

Different engine mounts. You will need to redo them.

Ghost
~ Ghost

PD50 Carb Info
82 CB650SC Brake Caliper Info

Stable
Wayward Son:1980 CB650C, RestoMod Period Custom Touring
Bad Moon: 1983 XJ750MK Midnight Maxim, Full Dress Tour Deluxe w/ X-1 Fairing
Nemesis: 1983 XJ750K Maxim, Old School style chopper

rb550fours
Posts: 12
Joined: Tue Dec 17, 2013 6:15 pm

Re: cb750 frame

Postby rb550fours » Sun Dec 22, 2013 6:15 pm

The 650 is a direct bolt in fit for an early cb500 or cb550.
The 650 swing arm will bolt in exactly if you drill out the mounting bolts holes. It's about 1 1/2" longer than the 550, use the 650 shocks and r.wheel.

Electric is easier to swap the 650 harness to the 500/550.

The 650 airbox and battery box is a tight fit in the 500/550 frame requires alteration and you will lose the tool box under the reg/ rec.

Not every 500/550 tank will work with the 650 placement of carbs. also 500/550 side covers will have to be trimmed back to the chrome carb covers.
The 650 entire front end will swap with the 500/550.
This will be like riding a 650 , or a ballzy 550 that handles better than a 550
The 750 is top heavy and a bit more awkward if you compare the frames, a the 750 is not as agile as the smaller framed 500/550.


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