Brian Deane

hey guys well soon I'll be starting to gather all the needed parts for a 6 port turbo build. just gonna make this thread for a parts list to clarify and for helpful tips. not looking for crazy power just a fun reliable street car

so from what I know the main thing I'll need to get is the spacer for manifold so it clears the UIM and to notch the bay. other than that is it just like any other turbo install? can I use stock na harness does there need to be any specific wiring done?

parts to get(correct if wrong please)
gt28/td04 turbo
hks bov
frontmount and piping
t2 ecu or rtek or haltec?
t2 injectors and pump
5/6 port delete and air pump delete(necessary or no?)
oil feed and return lines(best spot for a feed?)
AFR gauge
boost gauge
manual boost controller
manifold and down pipe

am I forgetting anything? does the rtek ecu have a AFM delete? I have a place here that can tune no issue at $75 an hour. my main concern is if there is specific wiring that has to be done other than that I know how to do everything else and have some of the parts off my ka24 turbo build from my 240

thanks! sorry it's easier to make my own thread I did read ALOT of others just wanna clear things up

Dak

If it were me I would go with port matching the TII intake to the 6-port block per these instructions. Porting The 4 Port Turbo II Lower Intake To Fit The 6 Port NA Block

Brian Deane

nice thanks for that link! I've seen that before but does it have to be done? just for more clearance basically?

PinkRacer

There are lots of threads about the differences between N/A and Turbo Harnesses - off the top of my head, some of the solenoids are different, etc. You may want to look into that to see if any of them are things you need.

As for your 5/6 ports, you'll need to delete them if you're using the turbo LIM. My car is a 6 port turbo with the N/A LIM/UIM, so mine are kept intact.

Brian Deane

you were able to keep your 5/6 port actuators with the turbo?? that's what I've been trying to find out lol

Dak

I think it is clearance. Turbo clears the TII manifold just like on a factory turbo car. People have been doing the spacer for years so two different paths to the same goal. Although with the spacer I think you have to massage the frame rail with a hammer to clear the waste gate.

rx7racerca

iTrader: (1)

S5 6 port turbo's are really rare - the 9.7:1 compression ratio motors make it particularly hard to add much boost. If you really relish the challenge, you're welcome to it, but I guess I'll be the first to tell you to find an S5 TII motor and swap that - it'll cost less in the end and be way easier. But if you do want to do the NA-turbo, read Aaron Cake's Project TINA series https://www.rx7club.com/2nd-gen-arch...thread-608165/

Shainiac

iTrader: (7)

I had a street port S5 6-port and didn't really care for how it drove. I used a filled and port-matched TII lower and no 5/6th sleeves and it was a dog down low. I swapped to a small street port S5 TII engine and it was much easier to drive out of boost, even with lower compression. I then switched to a stock port TII with S5 NA rotors (9.7:1) and a larger GT40R turbo. It was nice to drive also but the turbo was laggy. I eventually ran 18psi of boost on that engine and rotor setup with a small water methanol nozzle. It ran great! I beat the hell out of it for over 6 months and 6k miles as a daily but ended up switching to my current setup for more hp. S5 rotors aren't that bad. I ran 13-14psi on 93 octane and 550cc of water methanol for anything over that, with a decently large 63mm turbo.

PinkRacer

I have a Cartech turbo kit. It uses a different exhaust manifold and an Air to Water intercooler that hooks directly on the throttle body. All the intake manifolds stay the same from the N/A. Mine's an S4, but you get the idea.

SpikeDerailed

iTrader: (7)

Jealous of that Cartech kit you have.

Brian Deane

that kit is so cool omg. would I be able to just use one of those manifolds if I can find one and use a front mount inter cooler?? that would make the build super easy

RotaryEvolution

iTrader: (30)

easier to use the turbo port matched intake, then you can run all stock turbo parts. significantly cheaper if your goals aren't to modify the car for higher than 9psi.

rmx5

Yup^^^. My s4 setup is
Na s4 block
Na harness
T2 ecu, map, afm
Walbro 255 pump
T2 lim and upper intake manifold
T2 primary injectors
Gsle 680cc secondaries
S4 turbo
Boosts 8psi no idle issues afr at 11.5 for now. It gets abused at the track about 12 times a year. The car has been running great all year long. No issues yet. Car has enough power to spin 255/45-17 tires in third

Aaron Cake

iTrader: (1)

Looking down at your list, you don't list a stock turbo, so notching the frame or making a spacer can be irreverent. If the manifold you choose is custom then it can be made to clear the NA lower intake. Or you can take the even easier approach as mentioned of using the TII intake manifolds.

Turbo seems awfully small. Those turbos are better matched to a 4 cylinder piston engine.

This is a rotary we are talking about.

The stock HT-18 from the TII is a good place to start. Depending on your power goals, then from there you move into stock hybrids, then at about the 300HP make you move into an aftermarket unit.

All depends on power.

Haltech. Don't bother with a stock ECU or RTek.

Why? That stuff is old and awful. Get a new aftermarket pump like the Aeromotive Stealth or a genuine Bosch or Walbro. Loads of options. Run RX-8 yellow primaries (550CC) and a decent modern disk style 750CC secondary (there are many choices like these Racetronix - 110324 - 80 lb/hr D4 High-Z Fuel Injector MT ). Will be more reliable, better to tune and increase fuel economy.

Unless you go through extraordinary measures, mounting up a turbo requires removing the air pump. Same with the aux ports.

This may help:
The (Almost) Complete Guide To Turbocharging The Naturally Aspirated Second Generation RX-7 - Improvements, Changes and New Ideas

The RTek a this point is fairly obsolete. It's handy in circumstances of having a decent stock harness and a lightly modded car. But requires a Palm Pilot (!!) to tune. Best bet is to ditch it all and go with a Haltech properly wired in to provide a fresh harness.

Here are some other turbo-NA references which may help:
My OLD guide based on my original project using the stock HT-18:
The (Almost) Complete Guide To Turbocharging The Naturally Aspirated Second Generation RX-7 - Preface, Introduction

Port matching the TII manifolds for 6 port:
Porting The 4 Port Turbo II Lower Intake To Fit The 6 Port NA Block

The BIG one, Project Tina (phase 2 is where things get interesting):
My RX-7: Project Tina

clokker

iTrader: (2)

PinkRacer...I know nothing about turbos and their implementation but your Cartech kit is absolute genius from a packaging perspective.

ACR_RX-7

iTrader: (1)

I tried looking up their kit to see which turbo they used and such, but it appears they have not made a 13B kit for some time.

It does appear the the hot side is big enough to support a 13B, but it's tough to tell.

PinkRacer

They were a T04 of some sort - V-Trim maybe?
Compressor wheel is 55mm/70mm on the blades. The kit as it sits was built to be on a 13B. Falls somewhere in the range of what the BNR's are.

I have been researching the kit for 3 years and myself and Michael Vargas of Angel Motorsports have them, so we're pooling info. His appears to be the Cartech press car.

I have some magazine articles about it, and have been working to improve/re-engineer the kit a little bit in some areas with modern parts/technology.

Here's what it my kit had originally (the main components anyway) - seems to have some variation from the descriptions I've seen, so some parts may be replacements:
- T04 turbo (Roto Master)
- Air to Water Intercooler with a bilge pump and small heat exchanger up front and integrated BOV
- Upgraded fuel pump w/ additional in-line pump
- Rising Rate fuel pressure regulator
- External Wastegate (38mm Turbonetics Deltagate II)
- Downpipe
- Custom exhaust manifold to make it fit with the N/A LIM
- T2 Injectors (after they became available I guess, since this came out in '86) - before that, they just cranked up the pressure on the stock ones.


Here's what I have changed:
- 1150/1600 CC injectors (Bosch EV14's on the primary)
- Adaptronic ECU
- Cobra heat exchanger and pump for the intercooler system
- Walbro 255 pump in tank, removed in-line pump
- AEM FPR
- Removed the AFM from the system since the Adaptronic is VE, constructed custom air intake
- Replacing the existing reservoir for intercooler (a repurposed coolant overflow) with an aluminum tank that can be drained and used as an ice box lol
- Did an emissions delete on it, but retained the tube to the midpipe for the actuators - since mine is S4
- Added a MAC Valve boost controller
- Innovate Wideband O2/AFR gauge
- T2 trans - this is essential for the power increase

When I had the engine apart, I left the N/A rotors in it, but upgraded my seals, and I'm running premix. Also, I made it a half-bridge with some help from thewird. hahahaha

PinkRacer

ACR_RX-7

iTrader: (1)

Man, is that cool. Thanks for the insight.

SIDEWAYZE_FC

iTrader: (1)

Thanks for the input wow I've done couple 6port turbo project and never seen the cartech info. Geeking out right now��

RotaryEvolution

iTrader: (30)

you guys seem hell bent on getting him to drop a couple grand more on this conversion, the stock parts work fine for lower boost levels.

TonyD89

iTrader: (10)

So the tube that is open to the left goes where?

Brian Deane

lol yeah! im trying to keep this as cheap as i can. i wanna use the most stock t2 parts i possible can because theyre cheaper than a new $1800 haltec so much money! i just want all stock t2 parts besides maybe the rx8 injectors as he mentioned and the manifold is the thing im just worried about. i dont need why it is necessary to delete the 5/6 ports if you didnt have to on that kit mentioned above! trying to work around deleting those thats all i feel like having them properly working will be better then just deleting them!

misterstyx69

iTrader: (142)

..as soon as you mentioned the word "turbo"..the other word .."cheap" got scared and took off running.

ACR_RX-7

iTrader: (1)

I'll agree with styx. Cheap and turbo swap do not belong in the same sentence.