a.moore wrote:
I would venture to guess that the 2.5 is the same as well since it is a bored and stroked 2.3 but I have no official proof.
I am totally clueless on the 1.5 and 1.6 engines in the Mazda 2 and the Fiesta but it would be very nice if they were also the same. A 1.5 or 1.6L in a Locost would be a very nice engine.
The 2.5L has been installed into a NC Miata, so yes it too shares the same bolt pattern. The 1.6L in the Fiesta is a Sigma engine and appears to have a different bellhousing pattern than the Duratec/MZR. I haven't seen any indication of whether it's a pattern shared by any other engine families, but I wouldn't get my hopes up there either. Much like Duratec is just a name to Ford, it seems MZR is to Mazda. Even though the 1.5L in the Mazda2 is identified as an MZR it is not related to the larger MZR's and is unlikely to share a bellhousing pattern.
The newest question is if the direct injection 2.0L and/or Ecoboost I3/I4 family share a bellhousing pattern with an existing (RWD enabled) product. I would have expected the 2.0L to share the standard Duratec I4 pattern, but have seen no evidence one way or the other on that front yet.