HP Upgrade time
hey, i have a 89 7mgte and a blown head gasket, so i just bought a HG off of HPF.com and it should be comming any day, its really thick like 1.71mm so compression will be down to 8-1 wich will be good. my next prob is when im doing the head job i think i should install a boost controller but i dont know what kind to go w/.what psi should ARP studs be added i'm only planning 15 to start prolly 20 MAX.(this 15-20psi is after i make sure everything is alright and working good) i just know the arp stud install is a hastle and i would like to avoid but if it is needed its needed, b/c the 7M head job isn't fun eather.
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My 1989 toyota supra mods:83.5 mm bore, ARP main studs, ARP rod bolts,rings, Cometic .060" headgasket, ARP head Studs, Ferra 1 mm oversized valves, port work, Rc 550cc injectors, Walbro 255hp
Turbo: 1.15 A/R T4 twin Scroll turbin - journal .60 A/R compressor, Hallman Pro MBC, Turbo XS Blow-off Valve, 50mm wastegate, hks fcd
Intercooler: 32x12x3 core, 3 inch piping, with clampco t-bolt clamps
Exhaust:Exhaust manifold T4 twin scroll,2JZ 3 inch downpipe Fabed up to fit, Mandrell bent 3in back
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