Topic: Switching heads between years

[richmagee7]

Looking to switch the heads between my 73 750k and my 75 750k.  I don't see much difference between the heads.  But just looking for some reassurance that I'm not missing something.  When I pulled the head off the 75 I was reminded that the cylinders had the 8 extra 'packing' rubbers and pins around the cylinder head studs.  My 73's cylinders do not.  But I see no difference in the heads.  Is there some difference in the head I am missing?

Why am I switching you might ask?  The 73 was a project, had Mike Rieck do a bang up job on the head, thought I would use the bike differently but now want to sell the bike and keep that head.  The 75 is my first 750, my ride or die, and I want to refurbish it some.  Do a better job painting the engine this time, finally paint the frame, replace many things rusted from Bonneville, etc.  And I thought the head might be weeping oil though it seems now it was just the cam cover.  Anyway, switching the heads.  Any reason it won't work?

Thanks, Rich

[PeWe]

No problem.
My K6-76 has used 1972 head after its K6 head.
Now a 392 from K7/K8 + F bikes (except F2/3).
Cylinder earlier type with smaller oil return holes close to head.

[BenelliSEI]

No problem.
My K6-76 has used 1972 head after its K6 head.
Now a 392 from K7/K8 + F bikes (except F2/3).
Cylinder earlier type with smaller oil return holes close to head.

+1. Use the headgasket for the head you are using.

[PeWe]

No problem.
My K6-76 has used 1972 head after its K6 head.
Now a 392 from K7/K8 + F bikes (except F2/3).
Cylinder earlier type with smaller oil return holes close to head.

+1. Use the headgasket for the head you are using.

And cylinder.
Later cylinder has 8 wider oil return holes. Honda stock has 8 high o-rings + special knock pins.

Later gasket can be used with earlier style cylinders too. Possible to add o-rings with fiber gasket.

MLS late style on earlier cylinders are fine as is. I use  2 o-rings for oil to head

[richmagee7]

Thanks guys!

Rich