I think TITLE says it all??

What so special about it?

 

It's a Mazda car. I think they were made in the seventies. I'm not sure there is anything special about it except it was available with a rotary. It MAY have been available with a piston engine too. Not sure about that

 

From what I understand the Cosmo Engine had a larger intake manifold, and possibly/probhably larger intake and exhaust ports... so it supposedly has more potential, but from what I heard also is rare and is difficult or impossible to turbo in a 3'rd gen body frame...

-DC

 

13B RE is the engine you are looking for.(not the 10A, 10B Cosmo of the 70s) The FDs REW is just as capable.

 

Yeah, the RE actually came out a few years before the REW and had sequential twin turbo as well.

They are mentioned alot, because they are easier and cheaper to find than a REW, for a conversion into an FC or something.

 

there was one that was relised in japan only

 

Cosmo motors selling today are the 1990-1995 twin turbo 1.3 motors. The are not the same as a 13B-REW RX7 motor. The motor mounts are similar to the 2nd generation motor in the middle of the engine, the turbos are Hitachi HT10 (both different style compressors) instead of the HT12 (identical compressors) on the RX7. The turbos and motor are set up for an automatic (no 5 speed offered in the Cosmo) and are rated at 230Hp. The motor dimensionally is identical and the bolt up to the tranny is the same, but they are different. They are NOT a direct replacement for the RX7 3rd gen engines. Developmentally, they were made before the 13B-REW and have the crank angle sensor like the 2nd gen motors. Intake ports are larger, but restrictor plates in the exhaust make the exhaust port smaller.

The Cosmo also is where the 20B 3 rotor twin turbo motors are coming from. They are rated at approximately 300hp and 290ft/lb torque.

Tim

 

The Cosmo came in 4 generations.

L10 = 67-72
.CD = 75-81
.HB = 82-89
.JC = 90-95

L10= 10A carby
CD = 12A carby / 13B carby
HB = 12A carby / 12A efi-turbo /13B efi
JC = 13B-REW / 20B-REW

The 13B-REW engine from the JC-series was a twin turbo (hence the REW) but the design for the manifolding, intercooling, EFI mapping etc etc where all different to the 92+ FD RX-7. As also stated, the JC 13B-REW is best thought of as a cross between the FC (86-91) & FD (92-02) engine & I like to think it has the best of both....

 

the cosmo never came with a 13b-REW, it came with a 13B-RE. Both are sequential twin turbo however.

 

thats technically wrong, but a lot less confusing.

the factory calls the cosmo 20b and 13b rew motors, as well as the fd

mike