Head similarity between 1.6 and 2.0

[Mustlust]

I’ve acquired a few S1 heads and having had a quick look, they all seem similar. What are the defining characteristics that differentiate one from tother??

[1950landy]

As far as I know they are the same. The 2L spread bore may be different but I don't think so. I had all three types of head gaskets here at one time & they all lined up on a 1595cc head.

[Mustlust]

Same part number ….. learnt something today [emoji12]

[5380]

I’ve acquired a few S1 heads and having had a quick look, they all seem similar. What are the defining characteristics that differentiate one from tother??

Mustlust,

The heads are the same but 1.6 heads have different exhaust valves (shorter I think) and the valve guides have a different inlet guide seal arrangement. So do a check on the valves first before bolting them onto a block, otherwise your valve clearances will be way out!

Cheers
Mike (5380)