Anyone have a data sheet on the GM R4 air conditioning compressor? (made by delphi thermal systems or also known as harris radiatior) I need to know the max operating temp on that unit. Any help would be greatly appreciated! <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0">

They don't say in the product spec sheet. You could try emailing the tech manager at:
douglas.d.hoy@delphiauto.com