CB 750 FRAMES

[crispyduck]

Hi all, just a question. Are all CB750 frames from all years the same or are they dimensionally different.
I have just aquired a CR750 replica which has a modified F1 frame.( nicely finished I must say ).
Although I am pretty green with 750's I'm eager as a beaver to gather info.
Can anyone let me know what mods would need to made of the standard frame for a CR replica, bits removed / replaced ?
Cheers
Keith

[mick]

Hi Kieth, i think there are 4 different frames for the CB750,

1st the K series 69 to 75/76, then the F1 76/77, then the F2 77/78, and finally the K7 77/78,

i could be wrong with my years etc but others with more knowledge will hopefully put me right  ,

i think the biggest difference would be the earlier bikes were drum brake on the rear & the f1 & f2 were disc & the k7 went back to drum also the exhaust mounts would be different the earlier bikes had 4 into 4's & the f1 & f2 had 4 into 1's the k7 4 into 4's,

hope i have helped you a little  cheers Mick. 

[Yoshi823]

Found this pic recently. Here's what I did to my 750F2 frame...

[SamCR750]

Keith, I know your CR is done now and very nice indeed but I'm supprised you wern't pointed in the direction of this thread on the US sister board.

http://forums.sohc4.net/index.php?topic=27902.650

Sam.

[SteveD CB500K0]

We need you here more often Sam to direct people.

[mick]

yeah you could be like a lolipop man  , cheers Mick.

[SamCR750]

I knew I would be good for something one day

Sam.