How much boost is possible?

[raverboy]

Wutz up fellow dsm'erz I was wondering if you guys can help me out and tell my how much boost my engine can handle? Im pretty new to turbo aspiration and don't want to blow it, but wanna run as fast as possible without cracking my engine.

here are the specifics:

-Unorthodox racing crank pulley
-HKS super sequential blow off valve
-T66 AGP Turbo with 4in inlet
-4 core front mount intercooler w/upgaded piping
-75 shot nos spray for intercooler and inside motor
-2 5,000 CFM fans
-Fluidyn radiator
-AGP external waste gate
-Hahn fuel pressure regulator
-870cc injectors
-Yellow top optima battery
-100 watt upgraded alternator
-3 inch downpipe from turbo all the way back to the 4in Apexi exhaust
-Quaife limited slip differential
-Duel center force clutch
-Lightened flywheel
- Hahn Racecraft external fuel pump
- 20 lb nitrous bottle w/ remote opener
-Auto meter air fuel guage
-Auto meter boost guage
-Auto meter water temperature guage
-Auto meter oil pressure guage
-Auto meter nitrus guage'
-MSD 2 ignition system with adaptor
-Haltech engine management system
-Crower crank
-Crower rods
-Weisco pistons
-Upgraded oil pump
-Racing head
-Crower racing cams-stage 3
-AEM sprockets
-ARP head studs and cam studs
-Tripple layer metal head gasket
-Crower roller rock arms
-Crower springs and retainers

 

[doug]

Wow-- you have all these hardcore aftermarket goodies and you don't know how much boost your engine can handle? Did you ask the place that did your head gasket/ARP install?

Part of the answer is also compression ratio dependent-- what's the compression ratio of the Wiseco pistons you have?

I also doubt you have 5000 CFM fans.

 

[Eclipsei95cl]

Looks like he turboed his 420a. That is a pretty hardcore setup. I take it you bought the car that way? You should probably post this in the NT section. You will get more views from NT owners that are better on this subject. But it looks like you a pretty built motor.