Author Topic: CB 750 SOHC to DOHC swap  (Read 1739 times)

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Offline olasek18_18@o2.pl

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CB 750 SOHC to DOHC swap
« on: October 11, 2018, 05:20:44 am »
Hello, did someone try to put DOHC motor from CB 750K 1979-1982 to CB750SOHC 1969-1978 Frame? is it possible?

Offline beemerbum

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Re: CB 750 SOHC to DOHC swap
« Reply #1 on: October 11, 2018, 09:42:34 am »
Why would you?

Offline lrutt

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Re: CB 750 SOHC to DOHC swap
« Reply #2 on: October 11, 2018, 10:34:02 am »
Why would you?

Kinda what I was thinkin
06 Harley Sporster 1200C, 06 Triumph Scrambler, 01 Ducati Chromo 900, 01 Honda XR650L, 94 Harley Heritage, 88 Honda Hawk GT, 84 Yamaha Virago 1000, 78 Honda 750K w/sidecar, 77 Moto Guzzi Lemans 850, 76 Honda CB750K, 73 Norton 850, 73 Honda Z50, 70 & 65 Honda Trail 90, 70 & 71 Triumph 650s, 65 Honda 305 Dream, 81 Honda 70 Passport, 70 Suzuki T250II, 71 Yamaha 360 RT1B, 77 BMW R75/7, 75 Honda CB550K, 70 Honda CT70

Offline Don R

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Re: CB 750 SOHC to DOHC swap
« Reply #3 on: October 11, 2018, 10:52:50 am »
 The 750 motor mounts are the same, at least for a few years. I'm unsure about the height. We usually prefer to go the other way, putting a sohc into a newer frame. The reason we're here is we think the single cam engine is better.
No matter how many times you paint over a shadow, it's still there.
If you love it, set it free, if it stays it's probably one of my 750's.
 CEO at the no kill motorcycle shop.

Offline beemerbum

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Re: CB 750 SOHC to DOHC swap
« Reply #4 on: October 11, 2018, 01:20:33 pm »
Its the appearance of the SOHC motor that is so appealing. The DOHC looks just like any other UJM

Offline Stev-o

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Re: CB 750 SOHC to DOHC swap
« Reply #5 on: October 11, 2018, 03:38:54 pm »
'74 "Big Bang" Honda 750K [836].....'71 Honda 750K project.....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline olasek18_18@o2.pl

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Re: CB 750 SOHC to DOHC swap
« Reply #6 on: October 12, 2018, 02:16:16 am »
Thank you, convinced me! :)

Offline Henning

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Re: CB 750 SOHC to DOHC swap
« Reply #7 on: October 12, 2018, 07:08:31 am »
Its the appearance of the SOHC motor that is so appealing. The DOHC looks just like any other UJM
Ha ha, I always thought it was because the SOHC engine is rock solid and the DOHC is rubbish, but I suppose that's right. I need to look on the bright side next time I need to set the tappets or change the plugs.
71 or thereabouts 750 K1 - this one should have been put down