So I'm reinstalling the 13BT engine i rebuilt back into my 87 TII, and like an idiot i didnt label every little bit that i took off the engine, so here are pics and questions (INFO: I have removed BAC, ACV, Coldstart, EGR, Split air and blocked off each):

First is a hard line that is attached to the same hard line that is an oil line for the turbo... where does it go?


Next is a nipple that comes out of the back driverside of the intermediate housing next to the oil checking rod...what do I connect to it?


Third is a single wire with a bullet type connector, the wire is yellow with red dots along it. it splits off from the wiring harness at the same point as the TPS and knock sensor wires


Fourth, is a a wire that it looks like it was ripped out of whatever it was supposed to be attached to. It is a black wire with nothing else, and my guess is that it is the wire that goes to the sensor that is on the top of the downpipe (o2 sensor i believe?), being that there is no wire coming off of it currently...



Last is a single wire connector that is green with a black stripe...does it go to the tab on the upper coolant filler neck?


Thanks for the help in advance, and sorry for the bad circling...all I have is MSPAINT. I am running into things as I go so there will be more questions later to come...

 

PS: if different pictures will help please let me know ive got my computer and camera down here in the garage with me.

 

3rd pic down goes to the coolant temp sensor on the rear iron for your stock gauge.

2nd pic down i believe goes to your charcoal cannister. you can also vent it if the cannister is removed or use an aftermarket catch can.

 

If you've removed your entire rat's nest than the line that goes to this is gone. If you want to hook it up without the rat's nest installed, you need to "T" it off and send one side to the large inlet on the Charcole canister and the other side goes to the nipple on the oil filler neck near the cap.


This usually goes to the purge valve, which you appear to have removed. If you don't want to reinstall the rat's nest and purge valve than the next best thing would be to buy or make your self a catch can to hook to that nipple. You can leave it open as well, but you will get a bit of oil sprayed on your engine.


Coolent sensor on the rear iron


Yes, it looks like the O2 sensor wire.


Yes

 

can u take a picture of ur knock sensor what wire it is connected to. the sensor in ur second picture on the oppsite side of the second picture i cant find the connection for the knock sensor! thx appreciate it

 

Here you go Drblaze

 

Round 2 of Questions:

#1 Nipple at end of oil filler neck...goes to the same oil catch can as the one off the intermediate housing?


#2 Hard line coming out of the passenger side of the firewall. I'm guessing it's A/C related, of which I have removed, but I want to check


#3 Green connector that comes off the same set of wires as all the solonoid connectors for the rats nest which I have removed. Does it need to go to anything?


#4 A black wire with a white stripe...it appears that the previous owner cut it and then grounded it to the engine. the connector goes to the pressure sensor. My guess is that it is grounded b/c i have a Turbo XS manual boost controller and maybe this needs to be done to use the controller. Circled in green is the wire that leads to the ECU. Should I reground the wire from the connector or reconnect the wire back to the ecu? Why?


#5 This has me baffled, it is some black thing that is right next to the boost sensor. it is connected to the wiring harness no problem but at the top it looks as though something has broken off, what is it and what should it look like?


#6 This is a multi part question about plumbing the stock BOV. The previous owner decided to attempt to make a custom atmospheric BOV, and it doesnt look like it'll work to me, so i need to figure out how to reconnect it the right way.
Here is what I think I know...
#1 goes to #4
#2 goes to #6
#3 goes to #7
Correct?
I dont know where #5 goes...

 

A midnight bump for the morning...

 

Great thread! I am in the middle of a wire/hose tuck and am having a few of the same questions that you are.

The previous owner cut a lot of wires, and over time others frayed, so thanks for the help...

 

I believe that #2 from round 2 is the condensation drain from the AC exchanger under the dash.

 

No, this is one of the locations that the line in pic 1 of your original post goes to.

Looks correct, but hard to tell from the pic.

It can be left empty.

IIRC this is a common "re-ground" done to cure the "3800 RPM hesitation." You can read more about that here: http://www.aaroncake.net/RX-7/grounding.htm

That is your Variable resistor. It helps you adjust your fuel mixture at idle. There is sometimes soome silicone in the top of it that someone probably started to dig out and never finished. There should be a screw in there if you get all the silicone out, but if all goes well for you than you shouldn't have to mess with it.

#4 should go to your pressure sensor and can be T'd off to #1
Yes, #2 goes to #6
#3 does not go to #7. On the stock TID there would have been an opening similar in size to #3. Since you have a custom TID, you can either leave the BOV going to atmosphere, or fabricate something on your TID to allow #3 to vent back into the system after the MAF.
#5 is the air vent that went to your BAC valve which seems to be gone. Just block that off.
#7 looks like it is a nipple for the evaportative emmissions system. The opposite end of the line you were asking about in your first pic on your first post should attach there with a check valve IIRC.

 

Fourth, is a a wire that it looks like it was ripped out of whatever it was supposed to be attached to. It is a black wire with nothing else, and my guess is that it is the wire that goes to the sensor that is on the top of the downpipe (o2 sensor i believe?), being that there is no wire coming off of it currently...



Can you show me where the wire goes passed that? i had a downpipe made at a local muffler shop for my swap, and i just bought an o2 sensor, and i need to find where the plug for it is, and i cant find it. thanks

 

Three is the TPS check connector. The green plug with three sockets. One wire black/white another Blue/Yellow and the third Blue/Red.

O2 black wire goes to the 02 sensor. It's a long way from home. You need to route that to the right side of the engine somehow. LOOOOOOG way from home.

And like the man said, in your very first picture, the one of a hardline that is welded to the oil feed line for the turbo, it should have a hose on both its ends, and on the end on the right side of the engine should go to a check valve that is plugged into the turbo inlet duct. See FSM and Purge pictures.

Just an opinion: the number four in your second to last picture, was origianlly meant to go to the BOV (air bypass valve) on a stock car. You've removed your ACV which carried the boost sensors vacuum and installed a blockoff plate. Your blockoff plate is inadequate and you should sue whoever made it, since they did not make a vacuum nipple a part of their inadequate blockoff plate. But you can and probably do what others do and tee off the nipple that was meant for the BOV and feed both the boost sensor and the BOV (air bypass valve) .

 

Pardon this: your number four of the boost sensor plug is fucked up.

Brown/red goes to the ECU pin 2B. It's the output wire of the sensor. The Black/White is batt voltage. The brown/white is 5vdc ref volgage coming from the ECU pin 2A and is spliced together with the other brown/white wires inside the harness that feed the sensors in the engine bay. Pure black is the gnd (it's brown/black on SOME early cars).

Visit your FSM more often.

 

man im glad i found this

 

http://www.rotaryheads.com/PDF/2nd_gen/
^ go to that site,it has complete diagrams on electrics,engine,etc