Sc400 / Gs400 Turbo Kit
- Jon
But i'm in if it's a big improvement!
Tony
How would that work for LS400s?
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I'll buy it if it's CARB certified or if I can find a shady shop.. if I moved out of CA I'd buy it the day I moved.
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I would prefer a large single over two small turbos. How is the heat going to be handled? I don't think you can fit an intercooler into SC400.
2 into 1 manifolds are notorious for being hard to fabricate; plus i'm not sure of size restrictions
For turbos I'd recommend these things:
Either some kind of mass-produced Mitsubishi or Garret turbo
The T28/T25 hybrid turbo is an excellent choice for twins and can develop around 550rwhp on the 4.0L V8 with sufficient boost
on low boost applications I'd recommend twin Garret turbos (preferrably T25s) with a low A/R
twin T25s at low boost with a FMIC would provide around 450-475rwhp I'd think; possibly more
If you guys want any more suggestions let me know, I come from the 300zx crowd and we can only do twins so its kinda like excess knowledge of mine not being used

Let me tell everyone ahead of time though that I WILL NOT use cheap parts like deltagates, regular clamps, greddy type-s bovs, etc.
If I make a kit for everyone it will be with T-Bolt clamps for all the I/C pipes, Vband on the turbo and wastegate, more than likely HKS or Tial for the wastegate, and probably something along the lines of HKS Racing BOV or HKS Super Sequential. Everything will be high temp coated on the hot side of the deal, and either painted or powder coated on the cool side.
I refuse to use parts I wouldn't personally use. Is this cool with everyone, or are you guys looking for something a little lower quality/cheaper?
Let me know what YOU GUYS want out of this kit, and what type of things you would like to see included and what type of things you would rather just get on your own.
Also, like I said guys this would take a few months to do (probably like 4-6 months), and if things go right I should have a dyno by then anyways (hopefully), so I could provide dyno charts on the kit, as well as baseline numbers, a/f graphs, etc.
-Ethan
A question in regards to the 98+ SC400/GS400 owners, will this turbo bolt right in the same as a pre-98 V-8s? Is it pretty much the same engine with VVTI? I'm sure it'd be easier to meet the volume of production needed if we get GS and LS owners involved. Please don't let this project die out like the other ones did!!!







