What Engines Will Mount to Our Transmissions?
 

Besides a rotary, what engines will bolt to a 5-speed from an FC?

Someone told me the Miata 4cyl will fit. Is that true? If so, what years?

Anything else?

Thanks,
-Jason

nothing.

I'm assuming this is without serious modifications.

Will the Miata engine fit? I thought they used the same transmission.

Miatas used the same transmissions as N/A's, for 5 speed anyway.

Swapping involves removing the front transmission housing (there is no separate bellhousing) and swapping it for one for the appropriate B-engine pattern housing.

But why? The Miata trans has closer gearing, and is the same strength as the RX-7 (N/A) tranny. Better to put the Miata gearset behind a rotary.

Many Fords (light trucks, some T-birds?) used Mazda transmissions, allegedly based on the ribcase (RX-3/4/5/Turbo II/FD), but I don't think they had removable bellhousings. Need more infos.

Good info. Thanks.

The reason I ask is because I am thinking about buying another RX7 with a blown motor and dropping in a cheap, fuel efficient, 4cylnder.

I want a fuel efficient, RWD daily driver. Everything in that category is either expensive or ugly as hell (i.e. Miatas)

What year Miatas have the same rear section? Because If the rear section is the same, I could use an RX7 cross-member and the shifter and drive shaft would line up right. Then it is just a matter of fabbing a cradle or motor mounts. (assuming the engine clears the firewall)

Sound feasible?

None. FC's use a unique rear tranny mount/shifter location. I believe all Miatas use the power plan frame setup (the front of the diff and the rear of the engine/tranny assembly support each other via a truss, and the whole drivetrain assembly hangs off of the motor mounts in the front and the rear diff mounts in the back - there are no tranny mounts per se)

What you'd do is get the Miata drivetrain, swap the FC tailhousing onto it, and go. You will of course have to fab motor mounts, possibly make a new oil pan and pickup tube, (nothing really out of the ordinary for an engine swap) but at least you wouldn't have to worry about fabbing new clutch linkage/rear crossmember/driveshaft.

This of course is assuming starting with a N/A car.

I'd almost want to consider a B2200 engine/trans, if they made them EFI. The F-series four is very long lived and torquey as all hell. Good for a heavy car like the FC. And then there are the turbo versions of that engine as used in the MX-6/626/Probe.

Or then again there is the Kia Sportage engine, which is a formerly Japan-only DOHC F-series. Engine with a ton of potential, apparently you can use it with a 1.6 Miata ECU... well I'm getting beyond my experience here, Randy Stocker's website at http://members.aol.com/solomiata has a wealth of info on various Mazda engines and transmissions, including the engine used in the Sportage.

maybe you should grow up?

[QUOTE]Originally posted by eyeoutthere
[B]Good info. Thanks.

The reason I ask is because I am thinking about buying another RX7 with a blown motor and dropping in a cheap, fuel efficient, 4cylnder.

I want a fuel efficient, RWD daily driver. Everything in that category is either expensive or ugly as hell (i.e. Miatas)

What year Miatas have the same rear section? Because If the rear section is the same, I could use an RX7 cross-member and the shifter and drive shaft would line up right. Then it is just a matter of fabbing a cradle o

I recently read something about a Mitsubishi engine having nearly the same pattern as a B. Something like only one bolt was different.

Where did you see this?

Interested.

Some mighty max forum. I am trying to get some engineering dimensions for a rotary (or a damn good photo), so I can compare the two...

The rotary bellhousing pattern is in no way, shape, or form related to the Mazda B-series.

By B I meant..

B= 13B, 20B, 12A 10A? etc

Might be very interesting...

By B I meant
B3 (1.3l, Festiva/Aspire), B6 (1.6l SOHC/DOHC/DOHC Turbo), BP? (1.8l DOHC/DOHC Turbo).

All rotaries from '74 to present have the same bolt pattern. It's just called "rotary" bolt pattern, not A or B or whatever.

I think the Mazda MPV uses a trans same as TII with a different bell housing. MPV is a V-6 however.