Topic: will a 73 CB750 exhaust header fit a 75 CB750F

[qcextreme]

will a 73 CB750   header fit a 75 CB750F

[bryanj]

Not directly but yes with abit of work. I believe the 73 has stub pipes that would have to be removed

[Lumbee]

...someone else can chime in, but I thought the F had a larger combustion chamber.  Could this cause piston/valve clearance issues?  Something to look out for...

[Clyde]

I have interchanged the exhausts and heads OK. If fitting a 73 header to a 75 F, as  mentioned above you will need to get the stubs as used on the earlier(69-76 K) motors, but they fit no problem. From your listing you are not using a stock pipe anyway, but you may also have to modify the bracket  which supports the muffler to the frame
The 75/76 F has a slightly higher compression ratio due to slightly higher domed pistons in the same combustion chamber. The F2 is different though.