SWRocket

Hi guys, I'm new in the Forum.

I have a Subaru WRX Wagon.
I am doing a swap to a 4.8liter twin turbo and have some doubt about what turbos use and how much power the engine can handle with my setup...

The actual setup of the engine is:
wastegates: twin Tial 38mm
blowoff: Tial 50mm QBOV
intercooler: Godspeed twin turbo IC
fuel injectors: 1700cc
fuel: E100
gearbox: T-56 from a Camaro 2002 (low mileage)
clutch: Monster Clutch- Level 3 Premium Package with Billet Steel Flywheel with ARP Flywheel bolts & ARP pressure plate bolts

engine:
Gm 4.8L Engine refreshed with new , lifters, camshaft,Crank and rod bearings, ring set, Oil Pump: 9:1 CR
862 Heads, Cleaned, Resurfaced, Pressure tested, new valve seals and PAC Beehive LS1 .600" Lift Single Spring
Comp Cam, #54-000-11, Intake .567 Exhaust .566 LSR 114
Comp Cam Magnum Pushrods 7.400
LS2 Timing Chain and new gear
New Timing Cover, Powder-coated Black, Stainless steel hardware bolts
ARP Head Stud Kit
GM Multi-layer Steel Head Gaskets
LS6 Intake Assy & Throttle body, Air Intake Sensor Threaded into the Intake, Stainless Steel Hardware Bolts
Holley EFI Fuel rails, -8An Inlet, -8An Crossover feed Line, -6An Return fitting, Stainless Steel Hardware Bolts
ARP High-Performance Connecting Rod Bolts
Gm Oil pan, modified for LSX swap, New pickup tube, windage tray, dip stick and tube.
ASP Crank Pulley
Hardware bolts installed , and on the coils.
MSD 8.5mm Spark Plug Wires with NGK TR6 Spark Plugs
New Water pump with Stainless Steel Hardware Bolts
New Starter & bolts
New Alternator (LS1 Plug/spec) , 160AMP output
06 GTO Front drive accessories, Brackets are all powder-coated Gloss black

Some pictures:




My car:

Rise of the Phoenix

iTrader: (27)

Do you have any ideas on what turbos you'd like to run, like size and brand?

SWRocket

My start idea was to use two BorgWarner S200, that is 56mm compressor, 58mm turbine...

My goal is about 700whp... Do you think it's possible and reliable to my engine with the mods that I list this power?

Rise of the Phoenix

iTrader: (27)

I'm kind of new to the whole "turbo" world, but I bet most people are going to suggest something along the lines of a BW S300; bigger than 56mm. Twin 60's would be along the lines I'd be looking to do. A SBE 4.8 is pretty damn stout, and with the right tune, will handle 700+ rwhp reliably.

cptinjak

700hp, I'd go twin s200 chassis. 59s at MOST, if you must stay twins. Those could support 1000+ hp. t3 .70 a/r. would be a badass combo.

For 700hp though, lots of people will tell you to go single. Really boils down to fitment and personal preference, but 700hp is easily acheived either way.

Jack

SWRocket

what 60's you suggest?

SWRocket

I have a space problem too... so could not go too big turbo...

I already have the twin turbo Intercooler and twin Tial wastegates....

S200 is the black. the other is a K27

stevieturbo

AGP Turbo do some S200's with their own compressor and turbine housings which make them far smaller than the regular BW S200's

Really...for your power goals and engine size, anything in the 60mm range would be rather on the large side.

http://www.agpturbo.com/borg-warner-...-turbocharger/

SWRocket

Thanks man.
So, to 700whp, a 56mm compressor, 58mm turbine is fair enough?

I know that is relative, but how much boost do you think it's necessary to reach 700whp? About 1,0bar?

Anyway I will start with 0,5bar and put a booster.... because I will use the car on the streets too....

stevieturbo

If you want faster spooling, I'd say go for those 51mm units. They will meet your power goals. On a 4.8 I'd still say the 56mm's would be on the larger side for your goals.

As for boost vs power...far too many variables to say.

Rise of the Phoenix

iTrader: (27)

Glad others commented in here. This does look to be a really neat build.

SWRocket

Do you think that the T-56 gearbox handle 700whp/wtq ?

Thanks for all the help guys.
I will post when the project going on...

BTW, In the back I will use a Supra MK3 diff with a custom cradle, and 350z axles, and 240sx hubs.

Rise of the Phoenix

iTrader: (27)

Yes, I think so, at least for a while. You have the clutch addressed already, so I think you'll be okay.

cptinjak

The link you posted is just a standard 3" inlet s200 cover. That's not something that AGP makes. The turbo coated black in the above photo is an s200 with the 4" inlet and MAP groove.

Both covers are standard Borg/Schwitzer

Jack

2muchboostNY

iTrader: (8)

Reading through many different threads suggest that you may get lucky with a the power using a stock transmission. It will depend a lot on your driving style but I wouldnt bank on the trans holding together too long. Remember, in these V8 motors your HP goal may be 700rwhp but your Tq will likely be at or above that number and thats what kills the trans.

Nice unique build I will be watching closely.

eric0191

I agree you might want to consider selling that t56 and just going with a magnum from the start

SWRocket

What do you think about this kit:

http://www.hawksthirdgenparts.com/t5...me-parts-only/

T56 Transmission Rebuild Package Level 3 Viper Extreme "PARTS ONLY"
if you are making more than 600ft/lbs rear wheel then you may want to consider upgrading to the level 3 Extreme "Viper" rebuild kit which is good over 1,000ft/lbs of torque!!! And remember if all of this is too confusing, just give us a call and we will be more than happy to go over it with you...

This rebuild package will include the following:
-Viper Main Shaft
-Viper 30 Sline Slip Yoke
-New Machined Tailhousing
-Tailhousing Seal & Bushing
-Complete Carbon Synchronizer Blocker Ring Kit
-1-2 & 3-4 Billet Keys & Springs
-1-2 & 3-4 Bronze Shift Fork Pads
-3-4 Steel Shift Fork
-5-6 & Reverse Keys & Springs
-5-6 & Reverse Bronze Shift Fork Pads
-Front Input Seal & Output Seal
-Isolator Cup

2muchboostNY

iTrader: (8)

Pretty much what my Tick Level 3 is using a GTO Trans ....that should be good for your goal.

SWRocket

what configuration of engine you use?

how much power and tq?

Have you ever seen the PPG Gearbox to T-56? (probably is too expensive I think...)

http://www.ppgearbox.com.au/page.asp?productid=107

edit: forget about PPG... it's $5.000 +

stevieturbo

Unless it's full on drag use, I would have no concerns whatsoever about the trans holding that sort of power.