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Max Boost and RPM on my setup?

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Old Mar 28, 2012, 03:33 AM
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Max Boost and RPM on my setup?

Hi Guys

Here is my setup and would like to know whats the maximum boost for it to be on safe side, also please advise with Max RPM, car is EVO IV,

Engine
CP Pistons
Eagle Rods
Stock Crank
ARP Head Studs
Stock main studs
EVO 8 10.5T Turbo
King Bearings
GSC S2 274/274
Upgraded Springs and Ti Retainers
Stock Oil pump
Aftermarket Downpipe
Aftermarket O2 Housing
Fuel
560cc
Walbro

Drivetrain
AYC but most probably will go to RS Diff
Stock transfer
Stock EVO 8 Gearbox internals
Thanks in advance to all for replies
Old Mar 28, 2012, 04:14 AM
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not much more than a little above stock boost level with stock injectors. since you have a built motor why not upgrade the injectors?
Old Mar 28, 2012, 04:39 AM
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93 octane?


26psi & 7000rpm. Sure, you can rev higher, but doubtful you will make much power past that.
Old Mar 28, 2012, 05:03 AM
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with the stock turbo and injectors it will be around 24psi by 7k. your limiting factor here is the injectors and then the turbo.
Old Mar 28, 2012, 07:14 AM
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what about larger injectors ? lets say if I put 1000cc

I just wonder what is the max safe boost and RPM for turbo and engine setup


and why not more then 7K with GSC S2 and upgraded springs and retainers?
Old Mar 28, 2012, 07:18 AM
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I would say upgrade those injectors to at least 1k and most i would boost with the stock turbo is 28-32lbs i wouldn't rev past 8500-8700 not because the motor can't take it but i don't think the stock turbo will do much up there.
Old Mar 28, 2012, 10:55 AM
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Stock turbo won't make power much past 7k..
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