FWIW ... when I got my '85 1.9 the rocker on one side has larger nuts on
the adjuster than on the other side.  I have obtained another set from a
1.9 but haven't chenged them yet as the engine runs fine ... and has for
the 30,000 miles I've put on it since replacing the head gaskets ... 280
miles after picking it up.

Mike

Old Volks Home wrote:
<snip>
> The visual differences are that the adjuster screws/nuts are different
> (larger on the 2.1).  If there's a difference in the geometry/ratio between
> the two, I couldn't say.  Boston Bob would surely know.
<snip>