Author Topic: Cb750 Dohc to sohc swap  (Read 468 times)

Offline patrick.mohney

  • Posts: 1
Cb750 Dohc to sohc swap
« on: Feb 04, 2018, 14:18:32 »
Hey everyone please bear with me on this one.

I have a 78 cb750k full bike with a blown engine (put a rod through the block) and a 79 cb750 dohc engine thatís been sitting for a few years. It looks like thereís no way to mount the Dohc engine in the sohc frame. Has anyone been able to do this successfully?
If it truly canít be mounted, can I use the sohc heads on the dohc block?

Thanks for the help. I know this is a pretty out there question. Just trying to use the engines I have before I go sohc hunting.

Online J-Rod10

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Re: Cb750 Dohc to sohc swap
« Reply #1 on: Feb 04, 2018, 14:24:47 »
Best of luck to you.

The DOHC, came with a removable section in the frame so you could actually get it out. The SOHC, has braces that run lower than the backbone.

Probably not happening.

Offline MiniatureNinja

  • Posts: 521
Re: Cb750 Dohc to sohc swap
« Reply #2 on: Feb 04, 2018, 14:25:05 »
no DOHC motor will fit into the SOHC frame (79+ had removable section of frame downtube to make it work)

now when I say that, I'm not saying it's impossible. I'm just saying that you'll spend more work and money making it work than it would cost to find the right engine.

the SOHCs are so much more sexy anyway
'75 Honda CB360 - thread