Z3 Engine

[roninsrv]

Hi There – your help is appreciated. I’ve just blown the engine on my 2.8L Z3. Some dummy left the radiator cap loose and it came off during a long drive. Block overheated and is now good for nothing so I’m looking for a new engine. The current engine is an S1 single vanus (286S1) with the crank shaft sensor on the block (middle, towards the back) as opposed to having the sensor at the front. Now I can’t for the life of me find an engine with this configuration. I’ve been told that I need to replace like for like as the engine management system won’t accept anything else. Are there any work arounds? Can I make the S2 fit? Can I use an engine with sensor at the front? Any guidance welcome. Thanks in advance.

Andy