i think ur question is stupid. i'm being serioues
but here goes.
5psi daily (stock internals)
7psi max (stock internals)
any higher you must do some work on ur stock internals... do some research.
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Originally Posted by Dave2k2
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Originally posted by drift240sxdrag i think ur question is stupid. i'm being serioues
i agree with drift. wtf is a street psi?? u run whatever u want buddy. if u want to run 20+psi with stock internals, go ahead. ur turbo/engine will blow but u can run whatever psi u want
if ur asking for "maximum psi" like the title says, it all depends on what kind of mods you have
too much psi? stock turbocharged cars will run about 5psi. the phase2 240sx is running 25psi making 526hp with a stock bottom end. jun supra runs 50psi boost
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If you want more horsepower and would like to up your boost past 7psi (7 is pushing it) You'll need upgraded injectors, either polished stock rods with high performance rod bolts, or forged rods with hp rod bolts, you'll need to tap the block for the oil feed line as well as the oil return. The oil feed line on the S13 KA24DE engine can be done easily by threading a "T" fitting on the boss for the stock oil pressure sender. Lower compression pistons (9:0.1).
you guys are spouting off a bunch of BS. You can take the KA higher than 7psi. I would personally upgrade the fuel, but the bottom end. I know people who go higher than 7psi. The key is tuning. How do you think that shop got 500+rwhp on a SR20. The average guy couldnt do that...well her could if he tuned it properly which is what that shop did..........
Originally posted by nx2000 you guys are spouting off a bunch of BS. You can take the KA higher than 7psi. I would personally upgrade the fuel, but the bottom end. I know people who go higher than 7psi. The key is tuning. How do you think that shop got 500+rwhp on a SR20. The average guy couldnt do that...well her could if he tuned it properly which is what that shop did..........
Yea, you could go all or nothing, or you could try to make reliable horsepower.
Originally posted by Drft1580 Yea, you could go all or nothing, or you could try to make reliable horsepower.
Whatever
Reliablility....is tuning. It has nothing to do with building up the bottom end. Sure if you want a 300 or so HP monster KA, yeah, but for a basic kit, you could up the boost with tuning without hitting internals. Don't believe..search. Tuning is key in this sport we call a hobby. Tuning is what makes your car reliable....not just forged pistons.
Good info nx2000.
Do you have specifics on tuning an HKS Single Turbo GT-SS (60T A/R 0.64)?
Everyone tralks about tuning and I'm not sure what exactly "Tuning" encompases, can you help?
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tuning in laymans terms is getting your car on a dyno and playing with shit. Many ways...wideband 02 (I have no clue on these....yet. They are expensive I hear), S-AFC, greddy emanage, tuned ECU, programs to adjust your ECU with a laptop and other shit like that. You cant just set your S-AFC for something and ride out. You wanna do some dyno runs and make corrections. JWT doesnt just rechip your ECU. They put a test car (I believe last I heard) on a dyno. Fuel is the key. Most important part to tuning in my book besides general maintenance. When I get my emanage, I am going to pay for like an hour or tow of dyno time. Just sit there, do some runs and makes adjustments. Tuning also encompasses knowing your car and knowing what to do with bought parts. Planning can be considered tuning. You dont wanna run out and buy the biggest turbo you can get. or buy 900cc (just a number, dont know if they exists, I know I will never need them) injectors without needing them. HAve a HP plan and get the necessary shit for that setup. Or you can leave a little room for upgradability.
Last edited by nx2000 : Aug 20th, 2003 at 02:00 PM.
when i get my car, i'm gonna go get myself a hks spl t51r turbo with 2,000cc injectors and boost 100psi
personally, i wouldn't trust myself tuning my own car unless i worked at xs-engineering or something.. i know it's expensive but going to places like xs-engineering (phase2 tuner of choice) is my plan..
i agree with drift. wtf is a street psi?? u run whatever u want buddy. if u want to run 20+psi with stock internals, go ahead. ur turbo/engine will blow but u can run whatever psi u want
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