Turbo Rear Housing Better Response

[cul8er]

Hey guys and gals

just wanted to know if i can change the rear housing to get better response and if so where would be the best place i could get one as i live in Syd. i have a single T78 Greddy turbo unknown specs and boost doesnt kick in till about 4500 to 4800 rpm

on hi boost i running 18psi making 370kw at all 4 wheels

[abr33]

rear housing will do wonders. what size have you got?

And in sydney maybe gcg turbos are great but a little pricey

[R31Nismoid]

Rear housing will also hurt top end power, require a retune and so on.

[cul8er]

what would be a good size rear for the t78 front that wont hurt top end power and a retune ill want to get anyways

with the computer tune anyone know a good place in syd who is not going to charge an arm an leg

Edited August 14, 2012 by cul8er

[GTSBoy]

The problem is that you have told us you have an unknown spec turbo. So we don't know what size housing you have now, and whether a change will be available or do you any good.

[33GTRV]

if its a genuine greddy t78 its a good chance its the 17cm2 rear. If it is, you should be throwing boost at it like its going out of fasion. These turbos will make close to 500kw with the right mods. There is a 15cm2 housing but its rare. You may find one and i do remember one for sale on here some time ago. Id search it

[zebra]

GReddy/MHI don't do the small turbine new anymore. I look and looked for ages to find a 2nd one, gave up and sold the turbo lol

[cul8er]

how can i get the specs for the rear housing will it say on the housing its self or is there a way to get it

[zebra]

it is stamped on the inside of the turbine housing

[cul8er]

thanks andrew anyone got a pic of this might help me locate it faster

Edited August 15, 2012 by cul8er

[zebra]

I dont have a pic of mine anymore...but if you pull the turbo off, look inside the exhaust housing at the inlet flange and you will see a stamp that says 17CM2 or 19CM2 etc

its the only thing stamped on the inside

[cul8er]

ok ill take it to my mechanic this week and he will inspect it for me thanks guys what rear housing would be the best for the job i want

i want to keep the same power and i want boost to start kicking about 3500rpm not 4800

Edited August 15, 2012 by cul8er

[scotty nm35]

The .63 rear housing you need has a GT3071 bolted on it.

[cul8er]

Hey guys would the gt-k 850 be any good to me for what i want to do

http://www.turboneticsinc.com/gtk/

ONLY BECAUSE SOMEONE IS SELLING

Edited August 16, 2012 by cul8er