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I am building a 600cc engine from the ground up (to match my R60/5 frame). I hope somebody can get me some dimensions as the block came to me empty (as in no studs installed). I need the protruding length of the 3 timing chain cover studs and the cylinder head studs. I will use 1976-1984 rocker gear but that shouldn't matter for the length, should it?

I have never written down the Allen head bolt sequence, but I guess I can go by my own picture and figure it out:



Link to higher resolution:
http://www.stephenbottcher.net/BMW/R755 ... CF0044.JPG

Apparently two bolt sizes (M6x40 and M6x35) and the three long nuts. Is the 6x16 so-called anti rattle pin down in the bottom left really required?

Thanks in advance, Stephen

Tom Cutter provided this for the cylinder head studs on a /6...the /5 and /6 have the same stroke:

"9-7/8 (9.875") to 9-15/16 inches (9.9375") or (250.8-252.4 mm) from the case gasket surface to the end of the stud"

Kurt in S.A.

That's a start, thanks Kurt. I read the number 252 before just wasn't sure.

StephenB wrote:I am building a 600cc engine from the ground up (to match my R60/5 frame). I hope somebody can get me some dimensions as the block came to me empty (as in no studs installed). I need the protruding length of the 3 timing chain cover studs and the cylinder head studs. I will use 1976-1984 rocker gear but that shouldn't matter for the length, should it?

Just checked my 71 R60/5 block. The 3 timing cover studs protrude about 36mm (no gasket). I don't have the head studs installed.

Thanks, Matt.