vacuum advance distributor help

[downsr]

I have a msd vac distributor with vac advance canister.The canister is non adjustable.The engine has 15" of vacuum which causes the canister to put in an additional 20 degrees timing where i only want about 10 degrees.Do they make something that you could put in your vacuum line going to the distributor to restrict the amount of vacuum to the canister that would in turn put less timing in.Thanks

 

[TrailBeast]

Usually non adjustables have to be replaced or mechanically limited, as putting a limiter in the line does not work at all.
If it were mine I would drill the arm with a small drill and drop a limiting pin through it.

 

[mguner]

If you remove the pod you will see the stop on the back side like a square notch and the degree rating stamped on it. You could possibly make a limiting block to screw or solder on to the arm to shorten the travel.

 

[Dave1967]

JB weld a shim behind the stop worked for me

 

[mderoy340]

Put a flat blade screwdriver in there and bend the canister out to decrease the travel.

 

[AJ/FormS]

Is that with it hooked up to the spark port?