1970 Duster Alternator Pulley Alignment

maldridgeks said

Hello everyone,

I recently purchased a nice driver quality 1970 duster - largely all original. 318 car, 904 trans, aftermarket intake and 4 barrel carb. Car was originally an AC car & that was removed. The alternator belt alignment was put together with a rather unique use of washers & I am seeking your advice for how best to resolve. I assume this relates to a non-original water pump, but wanted to get your thoughts before I try ordering parts. Thank you everyone.

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You have the correct water pump/fan pulley, but you definitely need the triangular bracket that mounts to the water pump and hold the pivot bolt for the alternator... There is no need for the stack of washers on the lower end water pump hole, the triangular bracket bolts directly on the water pump and the slotted bracket goes on top of the triangular bracket on the right (passenger) side lower water pump bolt...

The way it's configured right now, there is no support for the alternator pivot bolt which is absolutely necessary to keep it from vibrating and fatiguing and breaking the alternator pivot bolt... The alternator pivot bolt needs the support of the triangular bracket...

You also need to get rid of the double groove alternator pulley and get a single groove alternator pulley, whether you get a new alternator or just change the pulley...

That is definitely a hack job... But you can fix it with the correct parts...