Sgt.Xyclone

Hey guys, I'm new to this forum so Ill try and make this as clear and painless as possible. I've attempted to do my homework on all this before asking stupid questions ( read all threads on smog removal, S5 to S4 swapping, and read FSM's for both motors back to front) now I'm new to the 7 so I'm trying to get as much of a handle on it as possible before I jump in.

First the situation:
I have stumbled upon a kid who is willing to sell me an 87 RX-7 TurboII, which according to him, the previous S4 motor was "junk", so he bought a "bolt on" S5 motor/tranny with 25k on it from someone and got confused when he came to the electric OMP. He made his own mount for the tranny and such. So at the moment the car is in limbo and he wants to offload it for $1500 which includes the old motor ( which might be fine cause the injector wires were burnt so he thought it was the motor ), the car with the new motor in it, and lots of goodies for both.

Right now the UIM, throttle bodies, and intercoolers are off both motors and sitting the corner. The wiring is partially unwound and sitting on the top of the engine. If I get this ( I'm also looking for some encouragement ;-) ) I'm going to cover the OMP and premix, so that illiminates swapping front covers and throttle bodies. I'm also going to do the removal of the vac rack for easier wiring and troubleshooting. But here are my actual questions:

1) Will the downpipe from the S4 turbo fit the S5 turbo, that didnt seem like it was cleared up in the swap thread?

2) As far as wiring, should I just go throught the wiring diagram, locate diserning colored wires for each connector to figure out where it goes? he didnt label ANYTHING

3) As far as smog removal, I understand 95% of it apart from these:
a: when you remove the vac rack you loose 3 lines to the ACV ( according to FSM ) I didnt see anything about it after that apart from removal, do those lines just get capped on the ACV?
b: With the primary fuel rail ( one WITHOUT FPR) you have three lines on one end ( according to FSM )
one goes to LIM, one is fuel in and other goes to vac rack, do I cap that?

4) In some "my car wont start" or similar thread someone had wanted to know if the guys engine had sat for awhile, cause the might have killed the compression ( I'm assuming he meant the manifold open to the air, but I dont know. This engine has sat with no UIM for prolly a year, how badly do you think this would rust the rotors, housings, etc. ?

Thats it for now, I don't have the car in front of me at the moment, so this is mostly from reading the FSM and the one visit to the car. Any help would be wonderful cause I've wanted a 7 for ages and this is the first Ive seen around here EVER ( I'm in upstate VT where cars last a decade)

Thanks!
Pete

eage8

iTrader: (9)

1) yes
2) it might just be easier to get a new harness... or you could biuld one . but yeah, you could do it that way
3) you take off the ACV and block it off. it's dumb
4) it might just be carbon locked. look up threads about how to de-carbon lock an engine. there is a good one in the 1st gen FAQ.

if you have any other questions ask away

EDIT:
block off plates: http://www.2751engineering.com/2751parts.html

don't block off the BAC though, that's good

eage8

iTrader: (9)

oops

3b. one is fuel in, one is fuel out (goes to the secondary rail) and the other one is either a bleed (doesn't actually plug into the fuel rail might plug into near the base of the injectors) or it goes to the pulsation damper, you shouldn't cap either.

I didn't think the primary one had any vacum lines going to it though. but I have an S5 so it might be different

Sgt.Xyclone

hey thanks for the info! well according to the FSM ( the picture on F2-7 in 89-on ) the Primaries have 4 nipples, fuel in, one coming out of the end ( goes to the vac rack ), then another 90 degrees to the vac rack one that goes to the LIM, and then the fuel out on the other end, maybe its wrong? and this is also an S5. Well lets say i keep the ACV for now ;-) do i just cap the nipples....

and about the carbon lock up, i dont know if the engine is locked up, I just want to know if whether leaving the mani open could have killed it :-/

thanks

Wankel7

Here are ALL the wiring diagrams for a S5.....

http://photobucket.com/albums/a47/S5_wiring/