Hello Guys,
Well ok here we go, i have a 1987 Mazda Rx-7 Turbo it currently has an S5 Motor in it.Now the orignal turbo has a broken oil seal and i dont know to just go with a T04E.

NOW HERES THE QUESTION!

Should i go with the T04E conversion or should i stay with the S5 Turbo?

I am on a budget so thats a big issue i know that its hard to have a custome exhaust manifold made for your car so i was thinking of buying those $75 exhaust manifolds on ebay that have a T04 exhaust flange.http://cgi.ebay.com/ebaymotors/ws/eB...category=33742 or should i stay with the stock S5 turbo. IM LOOKING TO PRODUCE ABOUT 13 TO 14 PSI. Thing is after i get the T04E and Exhaust Manifold how much $$$$$ does it require to complete the swap?and how do i re route the oil lines, water lines??

I know theres several people out there that have done this conversion so please post some pics and some info on what you guys had to do.

Thanks a bunch
TwEaK

 

Also let me add i do have fuel upgrades and stuff like that to power the psi im looking for current upgrades are

2.5" dp/mp
2.5" catback
720cc secondaries
walbro 255
apex AFC
RB FCD
taurus electric fan
S5 j-spec made to fit into an S4
removed vaccum spide
no emmisions equipment
A/C compressor removed
Defi D-guages- boost and EGT
HKS type 1 turbo timer, the one that does 15 different things
mazdatrix thermo pellet bypass
S5 tails and S5 front bumper

 

im sorry im off topic but i see you have a s4 car and a s5 t2 engine i might have the same thing i read about it and it said that you have to worry about the sensors and all is there really anything to worry about if you do do the swap in the s4 car

 

the swap is already done i got the car like that i know that the motor is running its runs right now great i get awesome pull i make about 7 to 8 psi things is while im spooling up the turbo it get smoke everywhere because of the turbo leak.
TwEaK

 

oh i was asking because i have a s5 t2 engine and im getting 2 t2 rx7's 1 is a 88 and the other is a 90 but they both dont have engines and the 88 is in better shape then the 90 so i want to put my s5 motor in the s4 car but wanted some info first from people that have done the swap

 

Going full T04E is probably not a good idea if you're on a budget. Those manifolds look pretty nice, but stainless has a problem when used for turbo manifolds, it expands a lot when heated. You'll probably want to cut the engine flange in half (separate the runner fittings) or when it expands it may flex and lose sealing.

 

Try a hybrid from rx7store.net.

http://www.rx7store.net/index.asp?Pa...S&Category=364

 

91 mazdarx7 only thing you would have to do i s put an S4 front cover on it and it will bolt right in..
so then those stainless steal exhaust manifolds arent any good?? by how much would they expand? any more info would be greatly appreciated
TwEaK

 

Man you guys gotta stop be suckers.
If the **** is too cheap, you should automatically put up the red flag.
Try and do a web search on "stone racing".
These things are a piece of ****.
"You get what you pay for."

Here's a rule of thumb for going with a full turbo upgrade...
HAVE $5,000 IN THE BANK TO DO THIS MOD CORRECTLY.
Trying to do this with a stock ECU is NOT RECOMMENDED.
TRYING TO GET CHEAP WILL BITE YOU IN THE ***.

Ask all the guys who are running full turbo upgrades and ask them for their experience.

YOU REALLY NEED AN FMIC.
I don't see an FMIC listed in your mods list.
Even with "cheap" eBay cores, you still need to take care of piping, and I can't see doing this complete job UNDER $500.

Your 2x720 secondaries is NOT ENOUGH FUEL.
YOU NEED BIGGER FUEL INJECTORS.

YOUR 2.5" EXHAUST IS TOO SMALL.
You really need a 3" full exhaust to take advantage of the huge increase of exhaust flow.
If you try and use this 2.5" system, you'll choke the turbo on the top end.
I just recently tuned an H-trim hybrid on a 2.5" exhaust, and while it made HUGE increases in torque at around 4kRPM, it fell flat on it's face after 5,000RPM.
The owner has recently changed over to a 3" exhaust, and the engine and turbo screams all the way to 7.5k redline - Haltech E6K controlled.

Please, stop asking us how to do this cheaply.
If you can't afford it, stick with a hybrid or compressor upgrade.
There is nothing wrong with going this route.
A hybrid can make BIG power.
And anyone who says 350hp to 400hp on an FC is not enough, they are full of ****.

If you insist on doing a full turbo upgrade, please check out the HKS cast turbo exhaust manifolds.
These are the best for the money, and it will OUTLAST all this (SS) tube crap on eBay.


-Ted

 

Reted what do you suggest i do then? im looking to boost 14psi i was told that with the stock turbo i can boost 14psi and get a Greddy Profec B Spec-II boost controller and ill be fine just get the car tuned and stay with the top mount just run a C02 sprayer or something...

Any Ideas?
TwEaK

 

I'd suggest you get a better paying job or work harder / more.


-Ted

 

lol ill just stay with the S5 turbo and get the boost controller then later on go with a FMIC
TwEaK