rx7male

if i manage to be able to control all my fuel... would i be able to boost more then 5 lbs on my SE engine? cuz i know that was my main enemy was leaning out and popping a apex seal... but since i can do anything with fuel now... would i be able to boost more?

Cory

rx7male

https://www.rx7club.com/1st-generation-specific-1979-1985-18/boostin-se-436133/

this is what the first gen guys had to say so far...

iceblue

We need to know what mods and preperations you have givin the motor to handle this as well ECU and turbo and exhaust sizes.

rx7male

ok this is what i'm doing...

-SE engine... with no porting...
-S4 intake with stock injectors
-custom exhaust 2.5 inch piping...
-S4 stock turbo with stock manifold
-2.5 intercooler piping with front mount IC
-2.5 JDM down pipe
-Stock fuel pump... tho i dont know if ill need a bigger more powerful one...
-oil lines and coolant lines all custom... i dont think this is really relavent
-Turbo XS BOV also i dont think thats really relavent to this but oh well...
-MegaSquirt ECU running it all...

and i think thats it

thanks for the input guys...
Cory

iceblue

It will never work or run like that. If you manage to get the turbo on under some creation of god the motor will pop.

Here is what you need.
1. consider searching, topic beat to ground.
2. www.1300cc.com
3. Your intake port will not allow clearance to mount a turbo. You need a custom manifold or a flange to space it out. A kit is obtainable from SonicRat "see 2". Another option is to port match a TII manifold.
4. You must get mor FUEL! A walboro 255 a TII or FD pump will work.
5. Still need more fuel. Ither get stock TII injector 550cc or 720's for your secondarys.
6. If you run a N/A ECU you must have a fuel controller. Without one kiss motor good bye.

Your exhaust and all will be good for 8psi or so. Do not boost this high untill you have motor tuned I would hate to see it blow after all that work.

rx7male

ok...
1. i have something being fabed up for the manifold... so no worries about that...
2. wont the 4 injectors from the S4 NA be enough fuel? i mean i am only going to be boosting 5lbs... i may want more but only with time... right now its to get this off the ground...
3. so i do need a bigger fuel pump with only boosting 5lbs?
4. arent the SEs fuel pumps external? so therefore the t2 or FD pumps wont work correct?
5. isnt the megasquirt good enough for tuning like for fuel? so therefore i wouldnt need like a SAFC or fuel controller? and doesnt the megasquirt take out most of the stock ECU...

thanks
Cory

iceblue

???? Are you driving a FC or a SA22?

No if the injectors were not needed they would not have put larger ones in them to begin with. Stock S4's only run 6psi.

Yes you need more fuel.

I said a fuel controller. That includes megasquirt and so on.

The exhaust and waste gate controll the boost. How on earth are you planing on keeping it at 5psi?

txredneckmedic

I would get a SAFC for more precise tuning.

rx7male

i have the waste gate and turbo and manifold from the stock s4 turbo 2... and if the s4 t2s run stock 5 psi wouldnt it stay at 5 psi at all times? sorry i'm all new to the turbo world so... so the injectors should be good enough for now to run 5 psi of boost correct? but my main question is will my fuel pump handle that? and i drive a 1985 GSL SE... so i have a megasquirt on the way so that takes care of the fuel computer...

txredneckmedic

You might be waiting for a while on the megasquirt....alot of people are mad at the guy right now

rx7male

its been shipped... so... it should be here in about 3-5 days... i talked to him on friday last week... and why are people mad at him right now?

txredneckmedic

Lack of delivery. I know of about 15 or so people that have paid for their ECU....and havent recieved anything. Supposably the guy got into some financial problems and took the money and didnt send anything out. lemme see if i can find some of the posts.

rx7male

eeek.... dont scare me like this... i paid alot for it... have those people looked at there order form and seen if the status has been shipped? cuz mine has and i emailed the guy and he said he shipped it so... BLAH BLAH BLAH you are scaring me now.... lol

txredneckmedic

ok...lemme retract my previous statements.....i cant find the posts I was looking for so maybe it wasnt megasquirt. Could be....but i cant find what I was looking for.

Mx6-Rx7 Addict

Get an SAFC for more precise tuning over a full fuel standalone?????

With the Megasquirt, you have the option to use a 12x12 map.

You can run nearly any injector size.

So much more you can do with a megasquirt.

Only downside, no one has figured out how to control leading and trailing coils together. Which is why most people classify it merely as a standalone fuel controller. It eliminates the need for a MAF.

To the post starter,
You don't need an SAFC, don't listen to these guys who say you do.

I'm not exactly sure if the GSL-SE runs an external or internal pump, nevertheless, you need to upgrade.

But wait, If you are running a GSL-SE, then you have stock 680cc injectors.

HMMM.


About holding boost. Chances are you will creep, even if you only have a 2.5" DP (which actually is pretty large). You have to port the wastegate port and possibly put a new flapper in place.

Go here to RETed's website for more info

http://fc3spro.com/TECH/HOWTO/ZWG/zwg.html

You may have to run a 12A turbo Dizzy, or a modified 12a nt dizzy (maybe Gsl-se dizzy modified too?) to controll timing and properly retard timing under boost. Visit www.rotaryshack.com


Good luck,

Justin

iceblue

You are not listening. You have a first gen they may be able to help you more. I do not know what pump to use but I would upgrade it. The injectors on a FC is 460cc they are not enugh for the 3rd time. No a S4 does not run 5psi stock it runs 6 and the boost is limited by the exhaust and TID. Opening these up in the maner you have posted will yield a solid 8psi run. And you need your wastegate ported to keep it from creeping up on you.

If your injectors are larger then our stock or TII 550cc then I doubt you will need upgraded ones.

Mx6-Rx7 Addict

Well, is he running the stock GSL-SE manifold and 680cc injectors, or the SE manifold with 460cc's??

And to be correct on boost, the stock s4's only boosted to 5.5 psi.

-Justin

iceblue

A N/A turbod on stock ECU with no fuel controller..
recipy for

iceblue

Would help to know.
:-/ I see

Mx6-Rx7 Addict

Re read the whole thread.


Megasquirt is controller fuel. IT ELIMINATES THE NEED FOR THE STOCK ECU, provided he uses some sort of timing controller (12AT dizzy.)

iceblue

Ok I see what your getting at. I thought you were emplying no SAFC like no fuel controller at all.

rx7male

ok... i will be putting on the S4 intake manifold running the 460 primaries and then 680 secondaries... as for the MS could i just use that for fuel and not touch the timing with it... like just retard it...cuz i think i have to do that...

Aaron Cake

iTrader: (1)

Wow. Just, wow.

If you don't know, then don't post. You know who you are. Further misinformation or crap like this will result in immediate action.

As for the original poster, check the FAQ for an idea on the basics needed for a turbo-NA setup. Lots of information there.

Tsi_Xtreme

for everyones infomation you can't use a SAFC on a GSL-SE. I'm doing almost the same kinda set up right now.

stock 13B GSL-SE block
S5 intake manifold from N/A
S4 exhaust manifold and turbo from TII
Haltech E6x
Tail Blowoff
255lb fuel pump
custom FMIC

I would say go for the 255lph pump. It's only like 125 at most and it will give you enough fuel for sure.

My project starts on June 6th I'll send pics and let you know how it does

Hyper4mance2k

iTrader: (40)

i don't think the redneck knows anything he's talking about... No flames just look to people who've done it for advise...