Thread: 62mm SRT6 Pulley Available Now
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Old Nov 3, 2012 | 08:02 PM
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onehundred80
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From: Ontario
Default Re: 62mm SRT6 Pulley Available Now
Originally Posted by amx1397
just heard from a friend that a guy that is not on any of our forums That we know of (crossfire,slk,mbworld,or benzworld.) has a c-32 with a aluminum SC pulley ,, it Exploded pieces went through the hood and through the thermostat housing,, ... hope he post somewhere so we can get some good info. jim
My bet is the pulley flange with the rivets in it got fatigued and tore off in pieces.All the torque is transmitted through a thin band about 3mm (.12") thick. Three small rivets transmitting all that power.
Remember the pictures of the aluminum water pump pulleys a few years back.

It's also possible that the pulley itself it may have split into two parts as one part with the belt on it is unsupported for three grooves. The corner of the bearing pocket falls under the third groove from the back and there is not much meat there.

Aluminum is quick and easy (cheap) to machine, I see no benefits in its use in these situations.
 
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