E30 325i restoration project — where to start with M20 engine rebuild
Just picked up a 1989 E30 325i for 2500 EUR. The body is solid, minimal rust on the wheel arches, but the M20B25 engine is tired — burns oil, rough idle, and the head gasket is weeping. Interior is rough but complete.
I want to do a proper restoration, not a quick flip. Planning to rebuild the M20 with new gaskets, timing belt, water pump, and maybe a mild cam upgrade. Also need to address the cooling system completely.
Budget is around 5000 EUR for the full restoration including paint correction. Is this realistic?
Questions:
- Should I rebuild the M20 or swap in an M50/M52?
- Best source for E30 body panels in Europe?
- Anyone running aftermarket EFI on the M20?
- Recommended suspension setup for street and occasional track use?
