TwinTurbo.NET: Nissan 300ZX forum - Now that you mention it, no I'm not sure. And after that
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Subject Now that you mention it, no I'm not sure. And after that
     
Posted by Dave N on June 05, 2008 at 12:38 AM
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In Reply To are you sure about that? posted by aliaZ on June 04, 2008 at 11:22 PM
     
Message glowing compliment from pearlyellowtt, now I'm feeling Homer Simpson "smrt" :-)

When I worked for Calsonic, I was told the Z32 A/C system used a variable displacement compressor that was similar to Calsonic's V-5 for the S13. Maybe this was Nissan's plan early on but perhaps they changed direction to reduce costs and complexity.

The FSM doesn't show a detailed break-down of the compressor in the illustrations, so it wasn't clear from the FSM that it wasn't a variable displacement compressor. Not having to encounter a need to crack open a compressor, I didn't verify it that way either. D'oh!!

It's been over 15 years since I worked there and so I'll admit my recollection may not be 100% accurate. However, I thought the variable displacement compressors were paired with the suction throttle valve wherein the STV would control the compressor's displacement through pressure feedback. While fixed displacement compressors used thermistors to cycle the compressor clutch on/off and prevent the evap core from freezing.

Thanks for the clarification - I won't reference that info anymore.

Dave

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