Turbo!

Turbo and manifold installed

The turbo charger and manifold are here and already installed!

The turbo of choice is a GT35 sourced from the aftermarket (i.e. not a name brand), class type T4 with A/R (area/radius) ratio of .70 on the compressor side and .68 on the turbine side. After Ed received it he sent it out to have the seals upgraded and the rotating components balanced to a tighter specification than standard.

As anyone would know, class T4 of course defines the flow capacity (as well as flange style) which means by definition that this setup can deliver enough air for an output in the 400-800 HP range (gulp!). The A/R numbers represent just the right balance between spool-up time and output. Rather than ball bearings it uses journal bearings in order to keep it fully serviceable.

For the manifold, Ed chose a cast iron, really stout unit from ATP Turbo specifically designed for use in a turbocharged VR6 motor. It drops right in, already has the T4 style flange to match up with the turbo as well as the wastegate port.

Ed also reports that the clutch is completed to his complete satisfaction (“MUCH nicer than my 2JZ car felt like”). It has a full stroke with the expected performance stiffness and an overall fantastic “feel”.

And finally, the new Bosch EV6 injectors are on the way. These are standard issue on the 420 HP Porsche 996 Turbo with a nominal flow rate of 450cc/min each. He also tells me that these injectors are good for at least another 100 HP so, if ever needed, there is plenty of room for growth…