i'm in the planning stage of a major project. i'm planing on putting together a tube framed, vg30et powered 240, using suspension components from a z31. The reason for using a v6 in this project is to put more weight on the rear wheels, & even out the weight distribution, but i dont know a great deal about these motors. which leads me to my questions:

1. How much boost can the stock turbocharger produce?

&

2. Are these motors difficult to extract power from?

thanks in advance for the help

I wouldn't run the stock turbo above 10psi. Get a T4 compressor & back-cut the turbine if you want more flow. 4-500HP is very doable, contact Jim-Wolf (California) or Malvern Racing (Virginia)for some workshop info.

Originally posted by Ben

I wouldn't run the stock turbo above 10psi

unless you fit an intercooler then the T3 should go uo to 15psi

thanks for the info guys i really apprciate it.

Also, i ws wondering, are there any differences in block design between the vg30e & vg30et?

Let me clarify what I meant with the'10psi' comment...

The ceramic-turbine T3 should be able to run at ~15psi all day with no problems. But my point is that the efficiency of the turbo would be quite poor at this pressure ratio. A larger compressor & turbine modifications should see the discharge temperature & rpms lower for the same flow rate/pressure ratio.

I have seen many examples of a better turbo producing more power at a lower pressure ratio. Especially when we are talking about stock units working real hard to maintain the boost desired.