Yesterday I watched my friend tear apart (and I mean, tear apart) a rotary motor in less than 2 hours. We're talking taking off the transmission, flywheel, waterpump, manifold and such. Then taking apart the 4 housings holding the rotors in, and take out the rotors and inspect them. All in 2 hours, he basically turned a fully assembled engine into a longblock, then a shortblock, then the shortblock was disassembled. Well, hard to say long/short block since the motor has no head
Believe it or not, rotary is incredibly simple. 3 moving parts, and that's it. After discussing and evaluating the situation and given motor at hand (and knowing someone who knows how to rebuild them!) I am VERY tempted to do the 13b turbo rotary swap into the Z. We're talking about 300hp after rebuild, about 3.5k in parts including engine management. The motor is LIGHT. We're talking 200lbs just for the block, with turbo,
manifolds and accessories plus transmission, it's about 400lbs. Heck, the longblock on the Z alone is about 500 lbs!
Installed, the car would be truly mid-engined. The only concern is that
the transmission is LONG. About 8 inches longer than the t56. The motor
would still sit far enough back to require a support crossmember to be
built for the Z, but it can easily be done. This would also allow TONS of room in the engine bay for electric fans, intercooler piping, etc. This has just become an easy contender for the RB25 (heck, and parts are available locally...but not cheap). Only other downfall is lack of initial torque. After watching him tear the motor apart, I don't have much fear of the rotary - it's very simple. Only complex parts are making sure that everything is within tolerable specs, and internals of rotors themselves are very complex. I also learned that a core motor from an 87-88 turbo rx7 can be purchased for about 600 bucks with transmission (bad motor, of course). It can then be rebuilt
Input?