I have a 7/90 production 318i sedan with the M42 engine, and am having a hard time getting the new A/C belt on. Most of the diagrams that I have found have a tensioner on this engine, but mine does not, so my question is... is the 13x890 belt the correct size if you have an engine without the tensioner? Thanks!!! Chris
Realoem.com is showing 12.5x885, so presumably 13x890 would work as long as it's not too wide for the pulley and compressor. http://www.realoem.com/bmw/enUS/showparts?id=AF93-USA-07-1990-E30-BMW-318is&diagId=64_0552 If your support bracket looks like the one pictured in the link above, kinda looks to me like bolt 9 goes thru a vertical slot to bracket 2, and if you loosen up 9 (maybe 10 also?), that would allow the pulley (3) to slide up and give you the slack needed for belt removal and installation.
