EvanG240

hey, i'm fairly new to rotaries and all things rotary related. but my spontaneous purchasing disease got me 80% of the way into a caged, gutted, track prepped datsun 240z with a 13b from an 88T2. the guy i bought it off of is an acquaintance of mine and he freshly rebuilt the motor before selling it to me so he could use his chassis for an ls1 swap.

the motor is bare (no emissions, ac, ps, etc..) and rebuild with 3mm solid steel apex and corner seals, the wankles and housing were all steam cleaned, every other seal has been replaced and it was street ported. all of this is going through an at stage 2 6 puck race clutch and pressure plate, T2 tranny and finally an R200 nissan diff. the previous rx7 it was in ran a t3/t4 hybrid 60 trim turbo and apparently made 400 crank horsepower with the stock ecu so I'm guessing around 11psi?

anyway, i've since gotten a custom one of exhaust manifold mounted to a precision t4 turbo (.86hot, 1.26cold) and the next parts on my list are a tial 44mm wastegate, tial bov, godspeed spec V intercooler (sorry i've soaked up my budget a while ago) and the rotary-works throttle body intake pipe.

I've got a couple questions because though i do understand engines and cars in general (i've gone to college for automotive tech, worked at a chevy dealership, and am currently a mechanical engineering-automotive student) rotaries are still very much gypsy magic to me. so if someone here can help me out with bridging some of the gaps as to what i need and what i can expect that would be great.

some questions i have are:

what size injectors should i be running? (have a 400lph fuel pump and an aluminum cell)

should i do an OMP delete and run pre-mix?

what should i do for an intake? because the stock maf housing is half the size of my turbo inlet

pump gas? water/meth injection on pump gas? or e85?

is a street port enough or should i go further into porting this winter when the block is out?

with megasquirt v3 what kind of power/boost number should i see? and what things should be addressed to safely get into higher numbers (~500wheel would be the most i would push on that chassis)


sorry for being a noob, but thanks for any help! here are some pictures of the car and its tiddly bits.

Dias_Stronomy

what size injectors should i be running? (have a 400lph fuel pump and an aluminum cell)

I'd say anything over 750cc

should i do an OMP delete and run pre-mix?

I'd pre-mix (if you're putting money in this and the omp takes a dive.....)

what should i do for an intake? because the stock maf housing is half the size of my turbo inlet

That I don't have the answer to...

pump gas? water/meth injection on pump gas? or e85?

I'd be using something above 91 octane.

is a street port enough or should i go further into porting this winter when the block is out?

What are you trying to achieve? If you still want to drive it on the street I wouldn't do anything more than a bridge port from what I've read up on.

with megasquirt v3 what kind of power/boost number should i see? and what things should be addressed to safely get into higher numbers (~500wheel would be the most i would push on that chassis)

No ideal. If you're drag racing, bigger brakes that are drilled and slotted rotors with 4 piston calipers. I'd have 4 point harness with full roll cage. I'd also install a NHRA drive shaft safety loop and a kill switch.

that's the best i could do for ya just knowing what i know. I didn't see anyone else answering so i hope that helped. GL with your build.

misterstyx69

iTrader: (142)

what should i do for an intake? because the stock maf housing is half the size of my turbo inlet

If you go to a standalone you get rid of the AFM,it is not needed.