Tensioner pulley option

[HAWAIIZR-1]

Originally Posted by Erik

Which one is the aluminum one?

http://www.zr1.net/forum/showthread.php?t=20187


https://www.ebay.com/itm/Mustang-BIL....m46890.l49292




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[secondchance]

Cliff,

Any particular reason you prefer boss on the inside? Flat surface outside to keep it free of dirt build up. Right?

[Dynomite]

Originally Posted by secondchance

Cliff,

Any particular reason you prefer boss on the inside? Flat surface outside to keep it free of dirt build up. Right?

Yes........and with the Belt Tensioner in hand it just looks like it should be smooth side outward that we see......Like a Wheel



The bearing is pressed in from the front of the Pulley into the Boss. The Rear of the Pulley is shown above.
The bearing is prevented from drifting out through the Boss as can be seen above with the lip covering the outer race of the bearing.
With the bearing bolt holding the bearing to the tensioner it is impossible for the Pulley to drift out toward the engine with the Boss on the Tensioner side.

[secondchance]

Erik,

https://www.ebay.com/itm/Mustang-BIL...MAAOSw9NxTwEQC
Above is the aluminum pulley some of us have been using.

Cliff,

I fully agree with your detailed analysis. Aluminum pulley failure posted a few months ago, I believe most likely, is from aluminum wearing out resulting in thin wall thickness where the belt is running. At some point, combination of thin wall and heat generated from friction may be resulting in break up of pulley surface. Of course, with steel, this is unlikely to happen.

My 84 Z51 came with powder coated pulley. For some reason, I cannot remember what type the original pulley was.

When I replace my coolant this spring, I think I will replace aluminum to steel pulley. I am seeing uneven wear on the pulley surface laterally and don?t want to take any chance of failure.

[secondchance]

If anyone is really into bling, I found polished aluminum billet pulley also.

https://www.ebay.com/itm/5-0-BILLET-...QAAOSwVFlT0m8~

[Erik]

Originally Posted by secondchance

Erik,

https://www.ebay.com/itm/Mustang-BIL...MAAOSw9NxTwEQC
Above is the aluminum pulley some of us have been using.

Cliff,

I fully agree with your detailed analysis. Aluminum pulley failure posted a few months ago, I believe most likely, is from aluminum wearing out resulting in thin wall thickness where the belt is running. At some point, combination of thin wall and heat generated from friction may be resulting in break up of pulley surface. Of course, with steel, this is unlikely to happen.

My 84 Z51 came with powder coated pulley. For some reason, I cannot remember what type the original pulley was.

When I replace my coolant this spring, I think I will replace aluminum to steel pulley. I am seeing uneven wear on the pulley surface laterally and don?t want to take any chance of failure.

That's pretty.
But the NCRS would wag their finger at me.