Project RB (How To)

[VQMaxFan]

Build is going good pat! I got the diff out of that z32

You still in mobile?? We are doing Justin's SR at my house and he told me you guys ran into each other randomly last week.

[Sileighty_85]

Originally Posted by VQMaxFan

Build is going good pat! I got the diff out of that z32

You still in mobile?? We are doing Justin's SR at my house and he told me you guys ran into each other randomly last week.

Sup man, Thanks, haha nice if i had more room in the S14 i would have snatched a lot more parts lol

Nah i left last week, yeah it was pretty crazy, I meant to call ya'll but seemed like I didnt have enough time, im ususally pretty busy visiting with family and shit.

Wish i was there to help man, i hope it goes smooth

[GSXRJJordan]

Originally Posted by Sileighty_85

next will be the MAFS section.....sighhhh Fuck you JDMONLINE.COM.......

I have some Mil-spec M27500 two-conductor shielded wire that I use to extend MAFS and CAS, want me to send you 8 or 10 ft?

[Sileighty_85]

Originally Posted by GSXRJJordan

I have some Mil-spec M27500 two-conductor shielded wire that I use to extend MAFS and CAS, want me to send you 8 or 10 ft?

Nah man dont worry about it, I'll just go to a junk yard and and delooom a J30 MAFS cable haha.
Not even 100% sure im even gonna use this harness, Kinda afraid to use it due to the condition (not having the physical plugs to verify the correct wires. I got to go off of colors and tracing back to the ECU pinouts) and wiring guides Ive found and used.


Traced back the unknown wires to found out they are not important (Exhaust temp light and ABS related)

I think i have all the grounds as well, Couldnt find anymore loose wires, So I guess there is only 3 grounds.

[Sileighty_85]

Since I gotta wait for a junkyard to open, Im gonna wok on the lower harness



once again JDMONLINE.COM are a bunch of lying bastards

De-Loomed


So apparently I can use the Lower KA harness

And the Knock Sensor section is the only section that I need from the RB lower harness minus the Oil Pressure plug, and possibly the Tranny plugs and a swap of the Starter Solenoid plug


If anyone wants to know here are my References that im using

[eklips3]

with the nismo tranny mount that you used , the z32 mount. is it because you have the rb25 tranny ? or do you have to use the z32 mount cause of the s14 chassis ?

i would like to get a nismo tranny mount for my car but i donno if i should use the s13 or the z32 mount .

[Sileighty_85]

I used the Z32 cuz its the same style as the RB25 tranny

Its beefier than the S13 one

[Om1kron]

I'm all about removing the knock sensor from the equation. LOL But I guess now that my motor is running right It wouldn't hurt for me to put it back on.

[kingston240]

if you ever tune your car, the knock sensor is a huge one.
its not something i would leave out.

[VQMaxFan]

Tried to get the pinout of your 98 to compare it to the diagram you have now but the computer with the nissan fsm's on it wont load any esm's for some reason. (infiniti & nissan)

[GSXRJJordan]

Originally Posted by kingston240

if you ever tune your car, the knock sensor is a huge one.
its not something i would leave out.

Lol the factory knock sensor is two steps away from totally worthless. If you're using it to tune your car, you need to stop and contact a pro.

Also, standalones don't use the oem knock sensor, so no one with built motors uses them either.

[Om1kron]

Originally Posted by GSXRJJordan

Lol the factory knock sensor is two steps away from totally worthless. If you're using it to tune your car, you need to stop and contact a pro.

Also, standalones don't use the oem knock sensor, so no one with built motors uses them either.

And that horn you hear honking is the school bus. BAM

[Sileighty_85]

Originally Posted by VQMaxFan

Tried to get the pinout of your 98 to compare it to the diagram you have now but the computer with the nissan fsm's on it wont load any esm's for some reason. (infiniti & nissan)

All the post and pinouts I've found, they are saying they are the same (or similar) as the 96 with a different wire or two, but from the pinouts ive posted and the ones Im finding they are matching up the same

[eklips3]

Originally Posted by Sileighty_85

I used the Z32 cuz its the same style as the RB25 tranny

Its beefier than the S13 one

do you know if the z32 mount will fit on the rb20 tranny ?

[Sileighty_85]

Originally Posted by eklips3

do you know if the z32 mount will fit on the rb20 tranny ?

I THINK so, When i was researching mine I think i compared it to an SR one (same as the RB) and they were the same

[mrflip69]

Haltech Platinum Pro uses OEM knock sensor. I think the new AEM series use it too--Nistune obviously.

Plenty of people run PFCs without knock control though...

If you've got a good tuner, it shouldn't be a problem, but I figure it's always good to have an extra fail safe for those hot days and extra crappy gas.

I'm more interested to see you fit all the AC/rad/fan stuff though, as there's barely any room with my setup--but S14 has just a bit more room than an S13.

[Sileighty_85]

So I had to work today so I figured I'd make the best of it.

I didnt like the solder job (shitty solder iorn) and the heat shrink (too big)
So i redid it. I guess one perk of my job.







Finished again.

[Sileighty_85]

Hit up the Junk yard for some plugs and wires today.
Got the Z32 Shielded Wire, A Kouki Wiper plug from a (EDIT) Infinity I30 and a MAFS for the RB Series I plug from the I30 as well


Im quite surprised I found a plug that will fit on the RB Series I MAFS but the problem is the pin out id differnet from the RB MAFS pin out so you gotta repin it. (Not hard at all)



Has this weird/cool connector on it

[xiaphin]

Never seen a Nissan connector like that before. Weird

[sleeper108]

you're a far braver man than I.

After I cut a wire, and my car didnt start for a year, I swore to never touch another harness again lol.

Can't wait to see you get everything all in and wired up!!!!

[singlecamslam]

nice work bench, got my rb25 running and loving the noise it makes.

[NewYorkCoupe]

Glad to see you are pullin through on the wiring. That was my winter project and it was a bear. I sat down and spent 10hours planning everything and cut/soldering. I swore Id never do it again, but after hearing it start up for the first time Id take back every swear-word I said while wiring.

[Om1kron]

Originally Posted by xiaphin

Never seen a Nissan connector like that before. Weird

because if you read his post you would've seen he pulled them from an IS300 you know TOYOTA. They fit into the oem plug sockets. Most japanese car makers use the same plug manufacturer for their harnesses, so he lucked out finding those parts on a different make, good to know some Toyota plugs can be adapted to the S-Chassis.

I dig your workstation, Jeff (GSXXRJordan) has a soldering station just like that, it's his favorite thing in the world.

[NewYorkCoupe]

Any chance there was another donor IS300? My MAFS connector was broken beyond use, and if that one you got works Id gladly pay for the part + your time and effort.

[Sileighty_85]

Originally Posted by Om1kron

because if you read his post you would've seen he pulled them from an IS300 you know TOYOTA. They fit into the oem plug sockets. Most japanese car makers use the same plug manufacturer for their harnesses, so he lucked out finding those parts on a different make, good to know some Toyota plugs can be adapted to the S-Chassis.

I dig your workstation, Jeff (GSXXRJordan) has a soldering station just like that, it's his favorite thing in the world.

EDIT: Car was an Infinity I30, I was just searching through all the imports and stumbled upon these

Yeah that soldering station is the shit, I want one for my house. Waaayyyy better than those craptasic craftsman soldering irons.

Originally Posted by NewYorkCoupe

Any chance there was another donor IS300? My MAFS connector was broken beyond use, and if that one you got works Id gladly pay for the part + your time and effort.

Unfortunately that was the only one. If I come across another one Ill let you know



Man this wiring is gonna drive me crazy. I gotta make little notes to remind me what wires are what what where they go.


Well the Schematics are showing that the Series 1 is a 4 wire Plug but the MAFS has 5 pins, I guess 1 is not used?

but had to repin the connectors for the RB MAFS and the Kouki wiper motor (very easy took like 2 mins)


deloomed and installed the Z32 MAFS wires, Cant seem to find the MAFS 12V wire, but I think I found it, Its a small Bl/W wire, I guess cuz its small its throwing me off


New MAFS Wire


almost done, Just need the O2 Sensor and RB MAFS plug wired in and should be done..... :/


But there is also some square plug thats suppose to come from the MAFS section not sure what the hell it is, Wiring schematic says" Engine Room/H" Dont know what the hell that means

[NewYorkCoupe]

If I was home I could help out with colors and whatnot. Keepin my fingers crossed for you, however, it looks like you are doing pretty well. Keep at it.

[buentellomma]

nice work man, i hate wiring... your a brave man. are you military?

[Om1kron]

probably just a diagnostics plug.

[Sileighty_85]

Originally Posted by Om1kron

probably just a diagnostics plug.

I hope so lol


As a correction for the peeps looking for an RB MAFS or Kouki Wiper plugs the Car I pulled the plugs off of was am Infinity I30


Alright so I went to the junk yard today and picked up a Z32 O2 sensor plug


my awesome soldering station lolz :/


So now I THINK the RB harness is done....

[fender-startocaster]

in for updates!