I searched... need help understanding a GTX2867r setup!

[Seraphim38]

- I can't tell you about the compressor housing choices

- I can say that I went from a .64AR to the external wastegate .73AR housing and I definitely preferred the .64AR housing for its better responsiveness

- For hardware, my advice would be not to cheap out. Go to FRSport and order new stainless studs for the turbo manifold, use NORD lock washers and copper lock nuts. It's way sucky to install a brand new turbo only to have it fall off or leak a day later. And yes, it happens more than people would admit.

- Make sure you get decent turbo feed lines for it, and the right oil restrictor with the turbo. The Circuit Sports lines were fine for me.

- For wastegate spring pressure, you cannot set your boost pressure below your wastegate. So if you want the option of running 7 psi of boost you can't get a wastegate that is 14psi. You might find that the HKS external adjustable wastegate actuator is beneficial. I personally have never used one so I can't offer personal impressions. Personally I used to have a 7 psi wastegate which was helpful one day when I went to do an autocross driving school in the rain (even at 7 psi and with big track tires on the back my car still has traction issues). Now that I have a 15 psi wastegate spring I can't ever turn it down, but that's ok because I don't ever try anymore. I run it at around 19 psi daily anyway.

[Lrn2Go]

Originally Posted by Seraphim38

- I can't tell you about the compressor housing choices

- I can say that I went from a .64AR to the external wastegate .73AR housing and I definitely preferred the .64AR housing for its better responsiveness

- For hardware, my advice would be not to cheap out. Go to FRSport and order new stainless studs for the turbo manifold, use NORD lock washers and copper lock nuts. It's way sucky to install a brand new turbo only to have it fall off or leak a day later. And yes, it happens more than people would admit.

- Make sure you get decent turbo feed lines for it, and the right oil restrictor with the turbo. The Circuit Sports lines were fine for me.

- For wastegate spring pressure, you cannot set your boost pressure below your wastegate. So if you want the option of running 7 psi of boost you can't get a wastegate that is 14psi. You might find that the HKS external adjustable wastegate actuator is beneficial. I personally have never used one so I can't offer personal impressions. Personally I used to have a 7 psi wastegate which was helpful one day when I went to do an autocross driving school in the rain (even at 7 psi and with big track tires on the back my car still has traction issues). Now that I have a 15 psi wastegate spring I can't ever turn it down, but that's ok because I don't ever try anymore. I run it at around 19 psi daily anyway.

Ahh... now see... this is helpful. So... if I'm understanding you correctly, I will likely want a 7lb wastegate spring since my power goals, for now, are simple and it will leave me room to grow by simply using my boost controller to handle the venting. I'm not sure what the advantages of a higher spring rate would be... but I can probably assume it's a better seal and less chance of bleed at lower boost when you're really pushing it later on.

That's good advice on the lock washers, copper nuts, and new bolts. I hadn't thought of that. More specifically I was wondering if you needed to have anything to mount the turbine half to the compressor half. Since I've never disassembled a turbo before, nor do I have a reason to just pull mine and do it for fun yet... I just don't know.

I'm already running a full set of DIF t28 stainless hoses for the s14 turbo I picked up from FRSport, with the proper oil restrictor. So I'm covered there.

Yet one more confirmation that I should stick with the .64 a/r... so I plan on doing so.