Date: June 7, 2006
Hi All,
New 1800 owner as of a month ago. I would like to convert the AC to a Sanden compressor. Looking all over the internet, I cannot find what Sanden model is used on the 1800. I already have the bracket for the Sanden (from the previous owner). Just need to know which model to buy. Also looking to convert to electronic ignition. Noticed Crane and Mallory make a kit. Does anyone have any opinions of either of these?
Any help is appreciated.
Thanks Gary
Hi, Gary - Your message makes it sound like you are writing to a mailing list, and my site is not really a mailing list. I can highly recommend the 1800 list for all your 1800 questions: http://autos.groups.yahoo.com/group/1800list
Regarding the Sanden compressor, I believe the series is now called SD5H14. Model numbers vary according to factors noted in this chart: http://www.sanden.com/products/piston5models.html . The new compressors come with PAG oil installed, which is not good if you are planning to connect it to existing a/c parts. It would be best to convert to R-134 refrigerant if you're going to replace the compressor. If you want to use a new compressor, you could just remove the PAG oil and replace it with ester oil, which is compatible with the residue in older R-12 systems.
An older SD-508, originally designed for refrigerant R-12, could be used with R-134 with a few simple modifications, and you'd also want to remove the old oil and replace with ester oil. Whatever compressor you decide on, make sure to replace the receiver-drier at the same time. Good luck. -Glenn.
June 1, 2007 - Update
Having done some research and testing recently on the R-12 to R-134 conversion and Sanden compressor, I now recommend using PAG 100 oil in a Sanden compressor with R-134 refrigerant. It still is necessary to remove as much of the old R-12 mineral oil as possible from the system. It is also necessary to replace the receiver-dryer with a new one designed for R-134. And of course, do not mix PAG and ester oil in a system. -Glenn.