This topic has been
over on another list.
I don't think firewall changes are necessary, but some
do. You will need to be able to feel for things like the
nut for the clamp to adjust it, and the nut that will
allow you to remove the whole thing.
You will need to adjust more often if you have the
original points system, which wears, but you will find
that if you have the original Marelli dist (very tall cap),
there are no 'points replacement' systems out there,
so people switch to a Bosch equivalent ($$). I myself
was lucky to find a marelli modified with a prototype
optical system and I use that.
Set the engine at TDC #1 and note where the rotor
is pointing, to within a few degrees. Remove the nut
that holds the whole distributor in and just pull it out
(oh yeah, remove the wire going to the points first).
The gear has very few teeth, so you won't have to
work hard to get it back in the same position. Set the
points gap on the bench. Once you get confident and
know where things are, you could probably regap the
points while it's in the car, since the exact gap is not
important (CD system). Adjust dist with the engine
off so the points to open right at TDC #1. Then time
to 35 degrees at 6000 RPM. There are markings on
the flywheel (Z1 for TDC, 35 for 35), since the pulley
is impossible to see in a 914.
Mark S.
'70 914-6