so i am looking at this 1993 rx7 twin turbo stock system, do all 1993 rx7s have a 13b rotary in it? i have seen like 13btt or 13pp or something like that and dont understand what that means so if someone could explain that i would help haha and are all 93 to 01 FD3S and then under that would FC3S or something cause i seen that alot too?

 

All FDs (1992-2004) are twin turbo, using the 13B-REW engine. 13B is the engine type, and "REW" stands for "twin turbocharged" in Japanese. 13BTT is simply a non-correct way of saying 13B-REW. 13BPP would refer to a peripheral port engine, which came stock in no RX-7 (or any Mazda rotary).

FD3S is the short form for 3rd gen RX-7. FC3S is the short form for 2nd gen RX-7.

I suggest you check out the FAQ sticky threads at the top of this forum to get familiar with the basic terms used.