ok so i currently have a to4e .50 turbo and its making 280 at 12psi with a 2.5 inch exhaust

seeing as the car will be taken off the road pretty soon i plan on going open 3inch downpipe and going bigger turbo..

my goal is around 310-320 hp on 12 psi with....

my turbo options:

T67 with a .82 turbine


or a 60-1 with a .63 turbine

right now im running a .63 turbine and i def feel i could use more topend, my only issue is will i be open to full boost the t67 in the 4k range i dont wannt have full boost anything past 4500

 

How much power do you plan on making?

550 range go with the 60-1
750 range go with the T67

 

i just wanna run 12 psi... hoping itll land me in the 320 ish

 

Why are you stuck on running 12psi?

 

because im still stock block and im just planing on changing out the turbo so i want something that at 12psi will yeild in the 320 ish range

 

so stick with what you have and get a more efficient intake/exhaust setup

or if you are stuck on the number 320 just go around to different dynos

 

i only get tuned by ptuning and i just want about 320 because im on 550cc and a 255

another reason i dont want to keep my current turbo is because i dont wanna keep running higher boost and that is just inviting heat to be an issue

 

just me but I would go with a garrett 60-1 with a 63..main reason is cost and availability...60-1 is a dime a dozen so they tend to run cheaper and can be found almost anyplace that sells turbos. However idk if it will give you the 320hp @ 12psi, depends on how effeciant your overall setup is along with many other uncontrollable variables.

 

You need to toss the 2.5 out the door and get a 3". You do that and you probably see that hp you looking for without even changing turbos.

Are you planning to build the motor and make a ton more power, hence the bigger turbo?

 

Built motor next winter when I come back from an over seas tour

 

I did a 67mm turbo with a .82 A/R turbine on a TC back in 2008 and man was it laggy. Didn't start spooling til 4K and peak boost was 5500. We made 352whp on 8 PSI on a soft tune before the oil pump failed on the car.

 

my 82 wasn't that bad.

 

You didn't have a 67mm turbo.

 

If not for Dual BB I wouldn't be running a .82 A/R (60mm turbo). Unless you have a quick turn around time on building the motor for big boost, there is no benefit to having a huge 67mm turbo on a stock motor. Going to be laggy and slow cause you are not in the turbos efficiency range.

 

yea i missed that part for sure.

 

Agree I do(having a Yoda moment) with Crush and Rsmoke go with the 60-1 and get a 3inch exhaust and you should hit your goal but I would get larger injectors.
Ptuning should be able to make that magic happen and if your not already go blo-thru now and safe yourself from the hassle of changing your setup later.