BobtheBuilder

Hey, I’m sort’ve new to automotive threads and the community in general and recently I’ve taken a liking to the 98 gs 300. Honestly I want to convert the 2jz from na to forced induction and create a low end boost with a goal of 600-650 hp. But i also enjoy the sound of a single turbo spooling, but my understanding is a turbo kit produces high end boost and that’s the opposite of what I want and I’m not sure kit will boost 225 to 600-650.

To boil it down, will i have to rebuild the 2jz with aftermarket parts to reach my power output goal? As well as, is there a chance I could twincharge the 2jz or is there a turbo kit for low end boost?

TrueGS300

Turbos greatly increase torque and horsepower across the board. You'd see a lot of low end power as well as high. You can select a turbo size oriented to what you want. Big turbos make big power and sexy dyno numbers and a fast car. You can use a smaller turbo to spool up quickly and bring the power on more instantly for that low end feel, but they run out of steam quicker and wont produce the big sexy numbers. Generally you want a turbo that flows an amount ideal for the engine. A 35 series is pretty ideal for a mid level 2jz build. It will make power quickly and can produce big numbers too. That's what I'm using and aiming for 800hp on my build.

That being said, I blew a piston at 400whp when the engine was bone stock, and many others have reported that 400 is maxing out a GE-VVTi engine. I had to put in forged GTE spec dished pistons and H beam rods to hold together for my turbo build. You will need internals to make your goals. Lower the compression ratio with a slightly thicker HG, and dished pistons. I went to 9:1 CR. Stock is 10.5:1. Too high for turbo. ARP head and main studs/bolts. And a great many other supporting mods. Then say goodbye to the transmission. Ask me how I know . Working on a manual swap now because I've not made it off the dyno without blowing an auto trans yet.