5sfte Valve's?, Peformance preffered Options

[NeverBeGosu]

I heard the 3sgte valves work in the 5sfte build but I was hoping for something a little more performance wise. Anyone have experience with this? Wanting at least 350 hp.

[NeverBeGosu]

cuase I want to be different and its fun, and it will be one of a kind if not just very few.

Anyways, looking at some numbers here should I lower my compression to 8.5:1 if im planning on boosting?

[Syaoran]

cuase I want to be different and its fun, and it will be one of a kind if not just very few.

Anyways, looking at some numbers here should I lower my compression to 8.5:1 if im planning on boosting?

Choosing the right Static Compression Ratio is dependent on your goals. Is this gonna be driven daily? Track-only? A mix of both? What octane/alternative fuel will you be using?

I'm going to run stock 9.5:1 compression ratio. New turbocharged engines come with 9.5:1 static compression. I find it's the best compromise in "low" CR and off-boost drivability. The lower your static CR, the more of a slouch the car will be off-boost, but the more boost you can run "safely" (I put it in quotation marks because this is where fuel comes into play)

3SGTE engines come with 9.0, 8.8 and 8.5:1 compression ratios, and some engines have come with as low as 7.5:1 CR in the past (Hyundai Scoupe)

If you're gonna be running on E85, you can run 9.5:1 CR and tons of boost very safely, vs running 91 octane and lots of boost. It all depends on how you want the car to behave. Static CR also directly impacts turbo spool time, which is something else to take into consideration. (lowering CR to use a huge turbo kinda hits hard on spool time, so a dual ball bearing garrett or precision turbo unit is recommended, for example)