Here is a pic of the location for the drain plug on a 12A engine (on my 1981 RX-7).

I put a pic on the lower Right corner to show which one it is on the engine.

Hope this helps some guys out there. Enjoy!

 

thanks for the pic. was just thinking about flushing my cooling system today but I wasn't quite sure where the drain plug was at. The british manual for my car says it's directly under the dipstick but wasn't sure since it's such a small bolt. looks like I'm flushing the cooling system tomorrow. hopefully I don't have any leaks...

 

Am glad i was able to help a fellow RX-7 owner!

 

me to i need to flush mine but couldnt find it somebody said it was under the oil pressure sender......thanks

 

You guys are very welcome!