I am looking for information about replacing the 13b engine in a JC cosmo with a 20B (engine and tranny in a front clip). Any info about possible pitfalls, what may and may not be re-used from the original setup, as well as any fabrication that may have to be done would be most appreciated.
Any pointers to wiring diagrams etc. would be helpful also.

Thanks!!

 

well the goood news is that all the parts exist and its been done (mazda did it), it probably a bolt in deal too.

the bad news is that its prolly more work than just getting a 20b car in the first place

mike

 

are the transmissions the same?

 

no they are not. the 20b tranny is beefier

mike

 

engine mounts and tranny same on the outside... wiring might be a bitch though.

You could just put a turbine on your 13B and port it and you would stomp a stock 20B...