Sounds like something rubbing against the firewall. Steve ----- Original Message ----- From: "Rob Dumoulin" <rob@dumoulins.net> To: "Pantera Mail List" <detomaso@server.detomasolist.com> Sent: Thursday, September 15, 2016 8:04:43 AM Subject: [DeTomaso] Sanden Compressors noises 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 _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. Sounds like something rubbing against the firewall. Steve __________________________________________________________________ From: "Rob Dumoulin" <rob@dumoulins.net> To: "Pantera Mail List" <detomaso@server.detomasolist.com> Sent: Thursday, September 15, 2016 8:04:43 AM Subject: [DeTomaso] Sanden Compressors noises 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 _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.