A couple of things: the distr that's on the truck now has a loose breaker plate, with too much horizontal and vertical slop, and the vacuum advance diaphragm doesn't seem to move. Truck won't seem to accelerate. Tuned up with new plugs, points, condenser, wires, cap, new ballast resistor, fresh starter/coil/dash leads, new gas filters and fuel pump, but it still won't exceed 45 mph. Another distributor I had in storage has a tight breaker plate but a dirt-clogged vac adv and a fried coil/bkr lead. Also the roll pin holding the cam/drive gear is wobbly. I have a new vac adv, lead and roll pin. Before I install them I want to know if the gizmo is still any good.
Is there a way - like a micrometer or caliper - to find tolerances for the breaker cam lobe dimension? The enertia weight springs looked good when I spun it on the chuck of my 18vdc DeWalt, but I thought I noticed a wild wobble. If this is the one I pulled 15-odd years ago because the cam lobes were worn [and not helping dwell] then it won't be much use except as a core, but I didn't want to go the checkerzone route since their cores have been beat to hell before they rebuild them in [China, Maylaysia, Mexico, Haiti] pick one.
It's a'68 292 in a C/10 pickup w/390 4bbl Holley. It was bored out .030 when it was rebuilt in '77.
Maybe I can cannibalize the two units into one useable distributor? Can the breaker plate be installed _in situ_ w/o pulling the whole candlestick?
