Help with my ST205 GT4

[dougsop]

planing for a big projec to my GT4 st205 ~ wantta do a turbo upgrade ? any suggesstion of wat turbo is good ? was thinking of garrett or greedy ~ plus can anyone help to guide me with the step i should do b4 i can upgrade a turbo ? planing to push it to around 400bph and able to do 0-100 in around 4 sec

at the mean time i have hks filter bolt on whole stainless steel pipe to turbo ~ hks ssqv ~ custom oil catch tank and hks hi power cat back ~

i 've been told that i will need the following b4 i can put a new turbo in

~680cc injector
~fuel pump
~fuel regulator
~ecu
~boost controller
~extractor
~FMIC

so any comment to guide me ? and plus any suggestion to where to go to do the FMIC

[GT4 20]

It was 350bhp when you e-mailed me

Just hope that you have a big wallet
Gary

[Adydas]

heres some stuff im doing / done to my GT4, feel free to have a nosey

http://forums.toyspeed.org.nz/viewtopic.php?t=42451

But my best advice would be check out Garys GT4 ST205 Creation hes done a truly amazing job without even touching the turbo just yet.

Sounds like you have the right ideas in mind.

one thing for sure.. it will cost.

Turbo kit + Boost controller and rebuild so far has cost me 3500.

Not priced or counted ECU, Injectors FMIC where the powerFC alone would cost ya 1500 or so.

Id estimate your plans are going to cost over the $5000 mark.(based on your parts listed etc.

[dougsop]

ya 400BPH at fly wheel haha dunno just rough idea on the power ya i knwo its going to cost alot ~ so this is going to cost quite alot ~willing to throw the money in for this baby ~

[Adydas]

You say that now.. wait untill ya start im stuck with nothing but 2 min noodles for my 3 square meals.

[vvega]

You say that now.. wait untill ya start im stuck with nothing but 2 min noodles for my 3 square meals.

pft you were to fat anyways

v

[Adydas]

i never said it was a bad thing

[GT4 20]

Depends if you want to do things 'properly'. For a strong reliable 3S-GTE with some 400bhp @ flywheel, you'll probably need to spend somewhere in the region of at least $15k. And then you'll need to do some suspension mods to keep the car on the road.
So, unless you have that sort of $ to throw at it, then a 'reliable' 400bhp will be a pipe dream. Sure, people will tell you that it can be achieved for less $, but how long will the engine last with 20 - 24psi thrown at it

Look at what I've done so far and add up some prices (do your own research into costs) ...

Balanced bottom end
Lightweight flywheel
Uprated clutch
TRD main shells
Shotpeened and polished conrods (or forged)
Wiesco +1mm forged pistons
Deburred oil galleries (in block)
ARP head studs
Gas bench flowed cylinder head
HKS 264 cams
Uprated valve springs
Apexi cone filter with custom intake
Koyo aluminium radiator
Heat lagged WAI
2.5" exhaust system
Apexi Power FC programmable ECU
Profec B Spec II EBC

I still have the following to add before turning the boost right up...

GT30 turbo
Custom tubular exhaust manifold
3" exhaust system
750cc injectors
Larger custom made WAI pre-rad
Water spray for pre-rad (Cusco controller)
Aquamist water injection
Custom cold air box

Then there is the 4+ hours tuning on the dyno with a few more to go when the next stage is ready.

Gary

[vvega]

its dependant on what you can cannot do yourself

but yeah for a chequebook racer even 15k could be shy




v

[GT4 20]

its dependant on what you can cannot do yourself

but yeah for a chequebook racer even 15k could be shy


IMO

v

Very true. I hadn't factored in labour costs to that figure.
Gary

[dougsop]

ya i will probably do thing in this order ~
~FMIC
~tein super street
~AVCR
~power FC(or greedy emanaement)
~forge piston rod
~cam
~gasket
~flywheel
~fuel pump regulator and injector
~extractor
~ turbo ~ ??
~clutch nessary ? ~

[dougsop]

oh and i better rebuild the engine ay ? any rough idea how much that will cost

[vvega]

ya i will probably do thing in this order ~
~FMIC why???
~tein super street
~AVCR why???
~power FC(or greedy emanaement)
~forge piston rod
~cam
~gasket
~flywheel why???
~fuel pump regulator and injector
~extractor why???
~ turbo ~ ??
~clutch nessary ? ~ you tell us

[vvega]

oh and i better rebuild the engine ay ? any rough idea how much that will cost

perhaps you should forgies and engine mods when you do this


v

[dougsop]

oh~~let me guess the price as well ~tell me if i m wrong
~FMIC ($1000)
~tein super street ($2000)
~AVCR ($800)
~power FC(or greedy emanaement) ($1200)
~forge piston rod ($800)
~cam ($500)
~gasket
~flywheel
~fuel pump regulator and injector (injector 680cc venom $600,pump 300 and regulator $200)
~extractor($700)
~ turbo ~ ?? ($1500) for garrett?
~clutch nessary ? ~

total 10G aprox ?
tell me i m right LOL hahaha ~

[vvega]

why the avcr ??
whats the point

mat egp into a egine builder and tell them to build a engine for you to do 400 hp
then pay the bill

then go to a tuner and tell him to put in a ec that will do 400 hp
then pay the bill

its really thats eazy


v

[GT4 20]

Get some quotes for

Block clean up with de-burred oilways
Rebore and hone (+0.5 pistons)
New main and big end shells (recommend TRD)
Forged pistons (which ever make takes your fancy)
Forged rods or OE shotpeened and polished
Full balancing of bottom end
Lightweight flywheel
Uprated clutch (a must for big power)
Gas flowed cylinder head (not a quick run over with a dremel!)
Cams of your choice
Uprated valve springs
Gasket sets for everything
Fluids

You'll need to factor in labour on top of that. Engine in and out is a couple of days work.

FMIC is pointless at the start. As I've told you several times, stock WAI is very good. If, and that's a big if, you get to 350whp, then consider a FMIC. Otherwise it is simply a bling add on with bragging rights - "My GT4 has a huuuuuuuge FMIC"

Fuel pump is advisable, but stock regulator is fine.
Injectors should only be done in conjunction with programmable ECU. Otherwise you run the serious risk of overfuelling as stock ECU won't cope.

AVCR is, as I've said before, purely for posing with.

Turbo is going to be a good 2k with another 1k for decent tubular manifold. You'll also need to factor in oil lines etc for new turbo and an external wastegate. Also don't forget a bigger exhaust
Gary

[vvega]

you can do 450- 500 hp with the stock st205 ic
you can also do 500 hp on the stock ex manifold



v

[dougsop]

oh thx alot for that hehe i will head down to beyond performance sometimes and get them to give me a quote ~ but i bet those ppl will quote sth very very high~

[GT4 20]

you can also do 500 hp on the stock ex manifold

v

But it won't be as affective
Gary