Rb20 Well Spec'd With Rb3071?

[irishGTSr32]

Hello guys need some advice on what kinda performance i would get from a GT30 with the following spec:

GT3071 with 56 trim compressor wheel and 84 trim turbine wheel. The turbine housing would be 0.82AR and the compressor housing will be 0.50AR T3 flange internal wastegate setup.

This was advised to me by my turbo shop.

Could someone give me an idea of what rpm i would be getting spool up and where abouts full boost ? i dont really want a lagy monster!! but i know i cant have my cake n eat it too!!!!!!

my Engine spec is as follows

Rb20DET

Forged CP pistons

Block decked, bored and honed

Crank polish

Arp~head,mains,rod bolts

ACL Mains,big end

N1 water pump

OEM oil pump (oil resistor + drain) (not sure if i need?)

Supertech hyd valve spring kit

HKS adjustable pullys

head lightly ported with CNC recut valves

Plazmaman Inlet manifold

theres more but there the important bits!!!

Many thanks Chris!

[STATUS]

I cant remember the exact specs but im sure it was std rb20 GT3071 @ 18psi i will see what info was on the invoice.

[STATUS]

bugger it was definitely the smaller rear housing not the 0.82.

[zebra]

thats a nice curve for an rb20, although the .82 housing would kill that.

Irish - get the .63 housing

[GTScotT]

that curve is very nice for an rb20 mate, alot better than expected

.63 3071 ftw

[irishGTSr32]

Thats the kinda power delivery i want looks nice n progressive!!!!!!

[bcozican]

would go 0.63 also

i have almost similar but rb22 with cams HKS 2835 with 0.82 rear

fullboost 4700 370rwhp and 480nm at 18.5psi

so on rb20 with 3071r 0.63 would expect little less power than mine and little less lag than above graph

[SimonR32]

im putting a 3076r sized turbo with a 0.63 rear on a standard 20 as we speak...

stay with a 3071r with a 0.6 rear if you want less lag, go a 3076r if you want a little more lag but a lot more kick in the kidneys