i was wondering i have an 88 with the 13b rotary. what i would like to do is put the 20bt motor in it. will the 20bt rotary drop straight in or will i have to move the engine bay around to make it fit.any help would be apreciated.

 

Yes, its a direct bolt in. No modifications are needed whatsoever. However, this has never been done before, so there would be no reason for there to be a section dedicated to 20b swaps.

 

Hope you have 10k to spend...... It is very unlikely you will ever do this swap.... Just do a t2 swap and be done with it, you can have a hell afast t2 for 1/4 the price of a 20b completed setup and there will still be parts availible if something breaks...my .02 to answer your question No from what i have read it takes some massaging to get it to work right it's not a drop and go setup....... good luck

 

also would i need to have a new wiring harness or would the wiring harness plug in to the motor.

 

isnt the 20b a 3 rotor motor??

 

Youll need to go with a standalone EMS. There is a 20B section on this forum..

https://www.rx7club.com/20b-forum-95/

 

yeah the 20b is a three rotor motor. i know the my ems itself will have to be replaced but i was not sure as far as the engine bay harness or not.

 

Yes.

This is about as far from a bolt in swap as you can get. Chances are you're going to be using an engine mangement system that has its own harness anyway.

 

Yes, you will.

This is about as far from a bolt in swap as you can get. Chances are you're going to be using an engine mangement system that has its own harness anyway.

 

Yes, you will.

This is about as far from a bolt in swap as you can get. Chances are you're going to be using an engine mangement system that has its own harness anyway.

 

http://fc3spro.com/TECH/SWAP/COSMO/20b.html
The increased power is going to break all your NA drivetrain parts.


-Ted

 

yea you would need to basically need to do a T2 swap except instead of the 13BT u would be putting in the 20B. I am debating doin this swap myself, I have been told it gets about the same gas mileage but im still curious about emissions... But with a standalone ems i guess you can adjust it accordingly