Engine notes, misc

A few comparative views of the VQ35DE from a 2003 G35 (left) and a 1992 300ZX (right). In measurements the VQ is 1.5in taller, the same length, and 2 inches narrower. The additional height comes from the intake manifold, as the measurement from oil pan to top of the valve cover is within 1/2in of each other.
 

I hadn't quite propped the VG level yet in this picture
 
Dyno comparison

I've been asked by several people why I am bothering to go VQ35DETT when I already have a VG30DETT. Check out the torque, especially below 3000RPM.
At 2250RPM the VQ is making 380ft-lbs.

Check out the "head-to-head". The VG is running the smaller turbos from an automatic.  The extra 500cc is noticeable here, even though the VG is running smaller turbos than the VQ AND the VG is using 15PSI vs 8PSI for the VQ.

Note that below 3000RPM (where your engine lives 95% of it's adult life) the VQ make no less than 130ft-lbs more torque than the VG.

What would this feel like? At 2250RPM (roughly 60MPH in 5th gear) the VQ35 will accelerate roughly as hard as the VG30 car if the VG car was in third gear at the same RPM (42mph).

 

Turbo specs from the VG30DETT dyno run

Max CFM: 304
COMPRESSOR
.42 AR / 50 Trim
40mm Inducer
51mm exducer
TURBINE :
.48 AR

 Turbo specs from the VQ35DETT dyno run

Max CFM:
COMPRESSOR
.80 AR / 60 Trim
42mm inducer
54.3mm exducer
TURBINE
.48 AR / 62 trim




 

This site last updated Thursday, November 19, 2009