This page is dedicated to the Bosch 1-231-301-058 distributor. The following links show how the distributor works and how it can be repaired and overhauled. If the distributor is too worn, you can still do a electronic ignition upgrade, since it isn't sensitive to small fluctuations in the gap between the igniter and the magnetic sleeve.
This page is for Volvos equiped with B18/20 engines, but the concept is the same. The differences between the two distributors are the rotation and the engine used (4 cylinder versus 6).
Distributor upgrade to optical pickup (versus Pertronix's magnetic pickup). You can also tweak your advance curve with a kit.
