Turbo size recommendation

For non EFI mechanical discussion
Post Reply
Baillie122
Posts: 19
Joined: Sat Apr 09, 2022 11:46 pm
cars: Vt commy

Turbo size recommendation

Post by Baillie122 »

Hey
I'm currently in the market for another turbo for my 304 v8 that comes underload at lower rpm but doesn't restrict hp too much.
The one I purchased was off ebay and doesn't come into boost until dangerously high rpm which has caused me some internal issues. The turbo was a t4 with an a/r of 1.05 on the outlet.
I've been told a t3 is too restrictive but a smaller ball bearing turbo would come into boost alot earlier?
Any recommendations appreciated.
Thanks Alex.
User avatar
Rhysk94
Posts: 148
Joined: Sun Mar 15, 2020 7:25 pm
cars: VE SS-V
VY V6 Turbo “Ecojet”
FG XR6 Turbo
VY V6 Stocker Farm Hack
VY V6 Turbo Competition Drift Car
N80 Toyota Hilux
VX Stocker Farm Hack
Location: Perth
Contact:

Re: Turbo size recommendation

Post by Rhysk94 »

Boost coming in later is better for the motor

Altho get a Pulsar G40 in a T4
If you want more response get a Pulsar GTX3584rs in a T4 with a 1.01 rear
vp304
Posts: 463
Joined: Wed May 19, 2010 2:21 pm

Re: Turbo size recommendation

Post by vp304 »

Get a genuine garret gt3540. Can get cheap as lot of ford guys usually upgradeand take them of their ba bf falcons
Had one on a stock 5l pulled strong all round.
Is enough turbo there to make 500hp at the engine on a 5l
Wade
Posts: 1106
Joined: Mon Jul 11, 2016 6:29 am
cars: Vr 5.0 statesman vr exec 5.0 turbo vy clubsport

Re: Turbo size recommendation

Post by Wade »

MatchBot is really good and gives you an idea. Best part is you can play around with multiple things and get an idea on how it’ll effect things
Post Reply