[DeTomaso] Sanden Compressors noises

[Rob Dumoulin]

I've got the Kirk Evans bulkhead reduction kit and pulley setup that drives
the compressor from the crank and the alternator from the compressor.  I am
on my third Sanden rotory compressor and this time I had new high and low
pressure switches installed by an AC shop.

With the compressor off, there are no issues.

With the compressor on, at 2,500 the brand new compressor makes a metallic
clanking noise.  This is the same noise that occurred before the last 2
compressors failed. The noise builds up and if you let off on the revs, it
slowly decreases.

Is this noise from over-revving?  Over pressurization?  Defective
compressor?

Any ideas welcome.

Thanks,

Rob
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   I've got the Kirk Evans bulkhead reduction kit and pulley setup that
   drives the compressor from the crank and the alternator from the
   compressor.A  I am on my third Sanden rotory compressor and this time I
   had new high and low pressure switches installed by an AC shop.
   With the compressor off, there are no issues.
   With the compressor on, at 2,500 the brand new compressor makes a
   metallic clanking noise.A  This is the same noise that occurred before
   the last 2 compressors failed. The noise builds up and if you let off
   on the revs, it slowly decreases.
   Is this noise from over-revving?A  Over pressurization?A  Defective
   compressor?
   Any ideas welcome.
   Thanks,
   Rob