I bought my FD from the son of the original owner with limited history, but one excellent record was the engine replacement about 8k ago by a Mazda dealership with a Mazda core. There are specific notes of other items replaced at the same time, like the clutch and radiator, but nothing noting what was included new with the core vs swapped over from the original engine. Has anyone bought a new core from Mazda, and if so can they tell me what is included? I'm in the middle of a big baseline project and will consider replacing things like the water pump, coil harness, coils, etc, but I also don't want to replace stuff that was new only 8k ago. I know there's obvious stuff like the manifolds, turbos, A/C compressor, and alternator that would be swapped over, I just don't know how much stuff would be new from Mazda on the core.

 

The core only comes with the flywheel attached. Everything else would be swapped over from the original engine. They should have replaced the spark plugs and thermostat when it was installed.

Vince

 

Was this a brand new engine or remanufactured engine?

Brand new engines include the short block itself, flywheel, oil pan (no motor mounts), pair of main crank pulleys with trigger wheel, OMP squirters, water pump housing with pump, coolant level sensor, and one-piece thermostat cover. (Pic below for reference).

Over the years remans have deviated from this slightly..... example, many arrived without OMP squirters.

 

Thanks guys that really helps! The engine was a Mazda reman. Other specific line items include plugs, clutch, radiator, AST, upper and lower water hoses, belts, and air hoses. So basically I'll assume that anything not on that list or the water pump, thermostat, OMP nozzles, and basic engine core are all original.

I'm deep into vac hoses and fuel injectors, FPD, sensors, etc, and basically want to do this job 100% so I don't have to do it again.

 

New engines no longer come with the waterpump housing, waterpump, thermostat housing, sensor.