what are some options to turbo charging my SE?
using the SE engine. can i use stock ECU with additional fuel computer?
what intake manifold should be used? TII or S5 N/A?

not looking to make crazy horsepower

maybe 200

 

1st option is to search, been talked one billions times about.
2nd you want cheap use stock intake, s4 turbo, fuel pressure riser. fab it all yourself. save money.
3rd have you made everything else able to use this power? or would this be the first upgrade on a 20+ year old worn out car?

 

i did a few searches, but without the results i wanted so i posted this thread
planned on fixing those items as they break

 

can't be done, you are out of your mind for trying

 

i know it can be done
i know there are many options
just wondering which were less of a headache and didnt cost 3-4K

i have gotten lots of help on here from fellow 7 owners
but if nobody wants to help thats cool

 

fixing those items as they break? thats a good plan.
It's not that nobody wants to help, this question is asked MANY MANY times.
do more than "a few" searches. spends days on it. everything your asking is already on here.
How do I know? I'm building a Turbo 7 too.
How many questions have I asked? None
How many do I need to ask? None so far

there is a wealth of info here, just take you time and read it ALL. then you can decide which way to go will be best for you.

and I hope you got a DD

 

exactly! listen to max!!!! i said it can't be done because i knew you would repsond with "i know it's been done"... how do you?? because you've seen it on this forum!!! it's still on the main page!!!!! we can't help you if you can't help yourself.

this is not something your just gonna throw on and rock out.. as said. hope you have a daily driver.

 

The easiest is NEVER the cheapest, which way do you want to go?

Easiest: buy T2 clip, swap motor
Cheapest: follow Max7's advice

 

The cheapest initial way to turbo an engine,usually ends up being the most expensive and depressing in the end.
Slapping on a stock TII HT-18 turbo and installing a rising rate fuel pressure regulator will get you running turbocharged....for a while.....until you blow the engine because you didnt upgrade/alter the fuel pump,injectors,igniton timing,compression ratio,ECU,ect......Then your out X number of dollors just to get up and running N/A again.
You could have likely spent a little more money up front and bought a TII engine and ECU thats factory designed to run turbocharged and make the kind of power your looking for,at near stock levels,for a long,reliable time.50 more HP would be just an exhaust system and intake away.And you wouldnt have to worry about upgrading 3-5 other SE engine systems to be compatible and safe running boost.

Plenty of people have turbocharged the SE engine.Some have stayed near stock,some have changed things to include more FC components.Some did it to be different,some did it because they arent familiar with FC engines,some did it jsut to see if it could be done......but the fact of the matter is,the GSL-SE engine is not designed to be turbocharged.That doesnt mean it cant be done,but you have to adress the need for modifications to nearly every engine control system on the car,in order to make the upgrade safe and reliable.

Heres a short list of the SE's shortcomings in the quest for boost......

1st.Only 2 injectors.....Makes adding more fuel harder since even larger injectors will make the idle/cruise too rich.Theres no place for secondary injectors like with the FC engines.Staged,4 injector setup is vastly superior for cruise/power fuel control

2nd.SE ECU not designed for boost.....The SE computor and manifold pressure sensor is not calibrated for positive intake pressure.The AFM is rather small,the intake system/6-port actuation is dynamically tuned for natural aspiration.The ECU lacks the ability to run secondary injectors or retard ignition.

3rd.The SE fuel pump is barely adequate for the stock engine....Turbos and rotaries suck fuel.Its not too hard to upgrade the fuel pump,but its yet another thing you have to do.

4th.The SE distributor is setup for N/A advance......Theres no way to retard the ignition for boost except to crank back base timing which affect off-boost performance and idle.An MSD/aftermarket igniton can handle that,but its yet another expense.

5th.SE tranny/cltuch is essentially the same as the 12A tranny.....Turbos create torque and torque kills drivetrain components.A TII swap will make adding a TII tranny very much easier.The TII tranny/clutch are renowned for their strength.

6th.The TII engine is prolific,rugged and proven.....Why reinvent the turbo rotary when Mazda already did it?It may not be as original,but originallity dont count for squat if your broken down.SE engines are an increasingly rare powerplant.Why blow one up with a turbo when you could by a TII engine and easily sell your good running N/A SE engine?

This is just a short list based on my personal opinions about creating a turbo FB.You can approach the task in whatever manner you choose.I gaurantee if you choose to go TII,there will be A LOT more support for you to lean on during the swap.Thousands of people have TII engines running in 2nd gen and 1st gen cars.There are proven ways to upgrade and run them powerfully and reliably.Youll have the support of the entire FC TII community and guys like myself that have done the TII swap into FBs.
If you choose to turbo the SE engine,your trial and error aspect will be greatly increased (which costs $$$$$) and there will be FAR fewer people with similar experiences,to support you.

 

Steve you need to make a webpage and just post a link instead of typing it everytime
seriously, I'll host it if yah want. Or do you just have really good typing skills and alot of spare time?
I've always wanted to make up a simple page with this info just never got around to it, like the other 937 projects

 

Actually, Im a terrible typist.
I dont have a lot of time on my hands either,since Im always working.To cut down on computor time,Im very selective with what threads I reply to.Usually TII or turbo swap related,or a few simple things here and there.Typically, Ill also jump in on the "0 responses and 50 views" type of threads.
I dont mind doing a few long posts here and there since everyone just says,"SEARCH" anyhow!......At least if I post a nice long response now and then,there will actually be something to find when you do search.

 

Steve,

Excellent post. That has a lot of good info for anybody wanting to turbo a SE or just turbo in general.



Can the mods sticky this?

 

That was a great post. In it you answered many questions that i have been pondering for a long time.

Thanks

 

Nice post Steve, hopefully many will read it and find what they need.

 

thanks steve
thats the type of reply i was looking for.
you see i have a spare TII engine, ecu, wire harness.
looks like this is definately the route to go.

what other major things would i need?
TII drive shaft, tranny?
standalone ECU?
custom motor mounts?

 

That's also well covered, But basicly you use the TII engine, ecu and tranny (custom drive shaft). The hard part is building the harness to run the injectors and get data from the CAS. You Kind to have to do it from scratch unless you have a full TII parts car or just happened to have all the wiring from it.

download the FSM from iluvmyrx7.com and stare at it for a while to figure out what exactly you have to do.


Dropping the engine itself in is the easy part. Slap the front cover and oilpan from your gslse onto the TII engine and bend the stock mount with an arbor press to fit (or you can buy one, not sure where)

 

once i get to the homepage of iluvmyrx7.com where do i go
1rst gen......then what

how about a link?

thanks for all the help

 

FSM= Factory Service Manual

There is no direct link, go to "things to read", manuals and READ!!!

 

Hey said he has the wiring harness also

 

Heres my opinion.
A guy from mazspeed.com followed my advice on his rally car and hes happy with it.

use your SE motor.
S4 or s5 turbo
Get an s4 or s5 intake manifold
buy a fuel controller or additional injector controller. Haltec makes a great one.


heres how it all works.

you run your stock ecu and stock primary injectors.
you use the 2nd gen injectors that are in the intake manifold that will be controlled but whatever fuel controller you choose.
the controller works off boost. when you hit a set boost level the controller activates the injectors in the intake manifold.
if you tune the thing wrong youll kill your motor.
if you do it right youll have a peppy 1st gen.

there yah go.
you got a bonified turbo SE with only minor mods.

mounting the turbo and getting oil in and out of it are the same no matter what engine so im not gonna describe it here.


http://www.mazspeed.com/forum/thread...id=7&styleid=1

http://www.mazspeed.com/forum/thread...ardid=7&page=3

 

it woud be best to remove the stock ecu all together from the -se. if your going to spend on a haltech at all, just go for the e6x or a good e6k used. this way you get full timing and fuel control on all injectors and have complete tunability. i wouldn't trust the stock ecu under boost at all. even tho your "two" secondaries will come on you still need the volume from the primaries as well.

 

That's pretty much the setup I have. Except I used a Cartech exh manifold, welded injector bungs on the stock SE intake manifold, FMU and HKS AIC.

 

thanks mikey d
this is looking even more interesting

 

Having ridden in it, I can personally vouch that's it's a very nice and powerful setup.

Basically:
The stock ECU handles everything, idle, warm up, etc.
The stock distributor should be locked, but no necesarily (depends on boost)
The AIC (Additional Injector Controller) only comes on when boost is present, giving the neccesary additional fuel that boost requires.

Tuning for an AIC should be MUCH, MUCH easier than a full stand-alone as well.

In the early 90's, before full stand alones ECU's became popular, many 3rd Gen RX-7's were upgraded in this manner.

 

Directfreak

just for the record your FB is what made me want to do all of this.
your car is bada$$. i respect you and that beast.
normally a leader, but in this case definately a follower.

signed,
desperately want to turbo my FB