2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

GTU - JspecT2 swap

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Old Aug 12, 2008 | 07:00 PM
  #1  
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CA GTU - JspecT2 swap

okay so i got my funds going
but i need someone to help me with the run down
on what i will need for the series 5 t2 swap

so here is the beginning of my list
Jspec 13bt
Jspec Ecu
t2 rack and pinion
s5 t2 tach
s5 t2 driveshaft
walbro fuel pump
what else will i need i know im missing other things

for example the rear end
what exactly do i need
im going to go with a cusco lsd
anything else?? help me with this list please i would greatly appreciate it
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Old Aug 12, 2008 | 08:15 PM
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Exhaust?
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Old Aug 12, 2008 | 08:21 PM
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CA okay

well naturally i know that
but yeah im going for th rev2 racing beat exhaust
no catalytic converter
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Old Aug 12, 2008 | 08:22 PM
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so

heres the list so far

Jspec 13bt
Jspec Ecu
t2 rack and pinion
s5 t2 tach
s5 t2 driveshaft
walbro fuel pump
racing beat rev 2 exhaust system from downpipe to mufflers


anything else
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Old Aug 12, 2008 | 08:24 PM
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You're gonna need a wiring harness, US-Spec would be better because JSPEC requires modification.
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Old Aug 12, 2008 | 08:28 PM
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Boost gauge?
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Old Aug 12, 2008 | 08:29 PM
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which harness
chassis, dash, or engine harness???
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Old Aug 12, 2008 | 08:30 PM
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boost gauge

i want to use the stock one on the cluster
because im not going to up my boost or anything
i want to keep the stock boost
turbo
and intercooler so yeah
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Old Aug 12, 2008 | 08:33 PM
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Ok, and as for harness I meant engine.
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Old Aug 12, 2008 | 08:36 PM
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updated list

Jspec 13bt (rebuild with racing beat lighter rotors and racing beat rebuild kit)
Jspec Ecu
t2 rack and pinion
s5 t2 tach
s5 t2 driveshaft
walbro fuel pump
racing beat rev 2 exhaust system from downpipe to mufflers
USDM engine harness
oil cooler
koyo radiator
flex-a-lite dual electric fans
act or exedy stage 2 or 3 clutch
and racing beat flywheel


i know it seems a little crazy
but im saving my chips to go all out and do the swap at once
what else am i missing

whats up with the rear end?
i heard i need one from the t2
???
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Old Aug 12, 2008 | 09:13 PM
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CA to you veteran t2 swapper

what else do i need?

whats the deal with the t2 rear end
what does it consist of?
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Old Aug 12, 2008 | 10:06 PM
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I'm not sure exactly what you're asking for here. Do you want to know the bare minimum to perform the swap? (if so you have allot of unnecessary items on your list) Or are you asking everybody's opinion on what should go with the swap?
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Old Aug 12, 2008 | 10:10 PM
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what tranny are you going to use?
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Old Aug 12, 2008 | 11:00 PM
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Use the NA engine harness, it's virtually plug n play. The TII harness will require rewiring connections to the front harness.
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Old Aug 12, 2008 | 11:03 PM
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You will need a Turbo II differential and axle shafts.
What does T2 Rack and pinion mean? Do you mean the steering rack? This should be the same as an N/A steering rack(some are power-assist, some aren't).

Try the engine with stock components, the compression may be ok. (If the compression is good, why rebuild?)

The Racing Beat lightened rotors are mostly for high revving N/A engines and do not really apply to you with a stock T2 redline.
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Old Aug 13, 2008 | 12:00 AM
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CA okay list re-edited

okay so im looking to see what is it i need to perform this swap

im buying my engine tranny ecu etc online comes as a whole for like $1500
so as for the swap i require
Jspec 13bt
jspec tranny
Jspec Ecu
Turbo II differential and axle shafts.
s5 t2 tach
s5 t2 driveshaft
walbro fuel pump
racing beat rev 2 exhaust system from downpipe to mufflers
USDM engine harness
oil cooler
koyo radiator
flex-a-lite dual electric fans
act or exedy stage 2 or 3 clutch
and racing beat flywheel

so my best bet is to use the NA engine harness?
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Old Aug 13, 2008 | 01:28 PM
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Originally Posted by Gabriel82
okay so im looking to see what is it i need to perform this swap

im buying my engine tranny ecu etc online comes as a whole for like $1500
so as for the swap i require
Jspec 13bt
jspec tranny
Jspec Ecu
Realize that many have had trouble running jspec ecus in they're turbo swapped cars, search "N374".
Turbo II differential and axle shafts.
s5 t2 tach
Not necessary but whatever floats yer boat...
s5 t2 driveshaft
walbro fuel pump
racing beat rev 2 exhaust system from downpipe to mufflers
USDM engine harness
Your existing NA harness will work with minor modification. Read this thread: https://www.rx7club.com/2nd-generation-specific-1986-1992-17/using-s5-n-engine-harness-tii-conversion-600241/
oil cooler
Unless yours is missing or damaged you do not need another oil cooler.
koyo radiator
See above.
flex-a-lite dual electric fans
A properly working factory fan out-performs most e-fan setups, go e-fan only if you really want to.
act or exedy stage 2 or 3 clutch
and racing beat flywheel
What is wrong with the factory setup? If this car is going to be driven on the street at all you are going to regret removing any weight from the flywheel, ask me how I know.

so my best bet is to use the NA engine harness?
Since you car is a GTU you may want to ditch the single piston calipers in favor of the 4 pot calipers that the turbos were equipped with. The non vented discs in the rear should also be swapped for the vented type at the same time.

In the future try using the "search this forum function" as this subject has been covered many times. I was able to perform my turbo swap without having to post a single thread. You can too.

-Hec
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Old Aug 13, 2008 | 01:32 PM
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Originally Posted by Gabriel82
i want to use the stock one on the cluster
because im not going to up my boost or anything
i want to keep the stock boost
turbo
and intercooler so yeah
If you want to run a catless exhaust, you're going to need a FCD. If you run a FCD, it will throw off the readings of the stock gauge, and you will need an aftermarket boost gauge.
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Old Aug 13, 2008 | 01:52 PM
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Originally Posted by Gabriel82

so my best bet is to use the NA engine harness?
Yes, if you use the S5 NA engine harness, all you have to change is the connection to the knock sensor. The 6PI solenoid plug can be used for this since it matches up perfectly with the TII ECU pin for knock. The VDI plug can be plugged directly into the boost control solenoid as well since it is already at the correct pin location. Every other connection will just plug right into the injectors/AFM/etc... like normal. Get a copy of the S5 wiring diagrams and look at the ECU pin out pages to see it matches up almost perfectly on S5s.
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Old Aug 13, 2008 | 02:02 PM
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You're going to need a duction tube (the thing that connects from your turbo to your air filter). Maybe a BOV? When I ordered mines I didnt get the pipe that the BOV came on so I got no BOV and pipe. You'll need the N370 Air Flow Meter also.
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Old Aug 13, 2008 | 04:50 PM
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you

thanks alot guys
your some great help
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