custom machining a 4 rotor rx7

[PonyKiller87]

Cool looking build. Is that engine normaly only 2 sections where this guy is making it 4?

[Cryptic]

Cool looking build. Is that engine normaly only 2 sections where this guy is making it 4?

yes...
the 13B-REW is a twin-turbo with 2 rotors (3rd gen RX7's 93'-02')
the 12A was a 2 rotors NA (1st gen RX7)
the 20B was a 3 rotor (aviation, Mazda cosmo, and I think a Mazda truck had one)

a rotor =

[The Shaolin]

yes...
the 13B-REW is a twin-turbo with 2 rotors (3rd gen RX7's 93'-02')
the 12A was a 2 rotors NA (1st gen RX7)
the 20B was a 3 rotor (aviation, Mazda cosmo, and I think a Mazda truck had one)

Not sure why you picked those 3 engine codes to define things...but the 20B only came in the cosmo.

[Cryptic]

Not sure why you picked those 3 engine codes to define things...but the 20B only came in the cosmo.

Does it really confuse you?

[The Shaolin]

Does it really confuse you?

Of course not. You just missed that the 20B was also twin turbo, and a whole slew of 13b's that most people would have used instead of jumping right to the REW. lol.

For anyone else that's still wondering about the engine codes, the number=displacement. 13B - 1.3L.

[BR3W CITY]

yes...
the 13B-REW is a twin-turbo with 2 rotors (3rd gen RX7's 93'-02')
the 12A was a 2 rotors NA (1st gen RX7)
the 20B was a 3 rotor (aviation, Mazda cosmo, and I think a Mazda truck had one)

a rotor =

Truck never came with a 3 rotor, but there was a dude who swapped one. There were 2 version of the 12a, with different port types, and there was a single turbo version of the 13b that was put in to the 87-91 rx7 TII's, which was mechanically similar but didn't have the ceramic seals that made the REW a superior engine for power and longetivity