Which turbo to go with???

[m1supra]

I need help on deciding which turbo to go with as I am at the limits of my current one. My currents mods are 550 injectors T-58 turbo capable of flowing 59lbs./min walbro fuel pump hks 44mm wastegate and forged internals. Right now I am around the 450-500hp mark I am upgrading my fuel system and i want your opionions as to which turbo to go with??? My power goals are 650-750 range. Thaks for your thoughts.

 

[CTsupra]

gt4067r

 

[MK3Brent]

GT4088.

 

[csnow]

A 67mm can hit mid 600's on race fuel. Otherwise, 71mm or larger.

 

[m1supra]

Im kinda dont want to go over a 71mm or bigger because i still want it to be streetable

 

[The Reaper]

71mm can be streetable

theres a lot of variables. how much do you want on pump gas? me myself if i was gonna step up that big and was looking for 700-750 hp i would get nothing smaller than a 71 so you don't have to run EXTREMELY high pressure to hit 700-750

 

[tissimo]

67 + spray

 

[selfinfliction]

A 67mm can hit mid 600's on race fuel. Otherwise, 71mm or larger.

would that run about 500whp on pump?

 

[MK3Brent]

What kind of compression does the engine make?

How much timing will you be giving it?

Is it knocking?

 

[m1supra]

yeah I am around 500 hp with a 58mm so 67mm should be plenty for 500 without hight boost

 

[csnow]

Im kinda dont want to go over a 71mm or bigger because i still want it to be streetable

My power goals are 650-750 range.

Sorry but 650-750 rwhp and streetable dont go in the same sentence
:runaway:

 

[IJ.]

67 won't do it without running a lot of boost.

 

[m1supra]

i have 8.5:1 IIRC JE pistons shot peened rods and a ground crank
I will be running an AEM EMS
It was all rebuild about 1000 miles ago

 

[m1supra]

Sorry but 650-750 rwhp and streetable dont go in the same sentence
:runaway:

ok i guess i should say drivable without being to much of a pain in the ass I plan on running it in a conserative state then just changing settings in the aem ems for the track

 

[MK3Brent]

IMO 550-650hp can be very streetable.

You need to address the suspension, braking, and tire choices wisely.

With 500+ on a decent 255-50-16 tire I hook up fine.
Now that I'm going to 600, if I need to, I'll drive with a DR.

 

[IJ.]

I used mine at 550rwhp last year as a daily when it was running.

The bigger the turbo the easier it is to keep out of boost when driving around town.

 

[MK3Brent]

I used mine at 550rwhp last year as a daily when it was running.

The bigger the turbo the easier it is to keep out of boost when driving around town.

And additional lag meant more momentum before the peak tq, so traction was given a chance.

Get that rolling inertia.

 

[bountykilla0118]

IMO 550-650hp can be very streetable.

You need to address the suspension, braking, and tire choices wisely.

With 500+ on a decent 255-50-16 tire I hook up fine.
Now that I'm going to 600, if I need to, I'll drive with a DR.

How well do your tires perform when corning with the 50’s sidewall?

 

[csnow]

Mid 500's is darn fast for a street car. 650-750 is a little nuts on the street. I dont think any street tire outside of a DR will handle that kind of power. I agree on the larger the turbo the better for daily driving. It is also better on gas mileage. I hated my stock ct-26 on the old 7M. It was always making boost, sucking gas, and I was still going terd slow

 

[MK3Brent]

How well do your tires perform when corning with the 50’s sidewall?

Who said anything about turning?

For the turning I do, I've had no problems.