camajo

iTrader: (3)

If the knock sensor is installed in the front rotor housing, what goes in the same spot on the rear rotor housing. I can't recall what I pulled out of it.

Andre The Giant

iTrader: (21)

It's just left open. The hole doesn't lead anywhere that can leak or anything.

camajo

iTrader: (3)

Thanks Andre, I was 90% sure that was the case but wanted to confirm.

DaleClark

iTrader: (55)

Mazda did it like that just to make production easier, the rotor housings are fundamentally the same save for some EGR passages. You can mix and match them - build a motor with 2 front housings, etc.

But, yes, it is just a threaded boss, it won't leak anything and that's the way it is stock.

Dale