M10 Engine Evolution: 1964 "116"Head & 1965 "118" Head

[Slavs]

 

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Edited August 9, 2021 by Slavs

[NickVyse]

Cool. Spray bar is also missing the two mounting tabs either end, although they could also have gone missing anytime in the last 55 years. Something else I've noticed in these early engines is the cam sprocket with two access holes for the clamp bracket, which was obviously unecessary as you can easily get to them from the side with a spanner. They're also quite a bit lighter than the later solid sprocket - 420gms versus 483 (FYI e21 single row sprocket is 414 whilst the e30 single is massively lighter at 346)

 

Did you also know there are two versions of the smooth cam cover - one for an oil spray bar that has curved ribs to clear and one with flat ribs that doesn't clear.

 

 

 

[Slavs]

 Content removed by Author.

Edited August 9, 2021 by Slavs

[NickVyse]

Probably just cost cutting or switching manufacturer. For a day to day engine I should think the weight of the sprocket makes bugger all noticable difference, and they weren't chasing economy back then.

[TobyB]

I'm seeing marks on the spray bar right about where the mounting brackets would be-

 

given how much the M10 vibrates, I'm going with your second interpretation- the brackets got left

off in the rebuild.

 

I LOVE that attachment method- so much sexier than the crushed tube and crush washers that came later.

 

t