The compressor housing has an a/r of 0.72 and features a ported shroud. You can see the annular slot of the ported shroud here, this allows recirculation of air around the compressor, giving the compressor more surge margin. This makes the turbo pretty surge resistant, a good thing for a fast spooling turbo.
The compressor housing also has a provision for a speed sensor if one is desired.
The G30-900 has a low friction ball-bearing center section. This helps speed spool and improves transient response greatly. The ball bearings are mounted in a floating cartridge which helps long-term durability by damping out potentially harmful high order vibrations. The center section is water-cooled for long-term durability.
The turbine wheel is 60mm with a 55mm exducer for a trim of 84. At a really high trim, the turbine is more of a mixed flow rather than a typical radial flow. This tends to flow well for reduced backpressure for a small wheel size.
Extreme Turbo Systems modifies the compressor housings to fit in the GT-R’s engine compartment and to line up with stock location change pipes.
The turbo has a V-band exhaust housing with a .83 a/r. This will give enough flow for our projected power levels. The V-band housing flows better than the traditional 4 bolt exhaust housing.
5 comments
Are you going to use any fancy thermal coatings to mitigate under hood heat?
This is such a drool worth project! One that I would never be able to undertake these days. I can live vicariously through Motoiq.
We are going to use a few different things, figuring it out now!
Oh… I smell an article out about the various coatings and wraps/blankets out there and the science behind them…
Lately I’ve seen cerakote being advertised a lot for underhood stuff. Even going as far as saying it’s equivalent to traditional thermal coatings. I’m not sold.
Then you have the DIY stuff from techline and eastwood. You have Swaintech and their white coating, the original jet-hot brand, not to mention local coaters like Embee and your local powder coaters..
I know ceracote is awesome on guns, it’s the most durable and abrasion-resistant coating in the gun world, it doesn’t rub off on holsters too easily, and is almost as tough as a plating. Doesn’t seem to burn off either although most kinds of guns we can buy don’t stay hot as long as car parts! The super air-cooled Porshe we did a video on a few weeks ago has a lot of ceracoted engine parts that still look good after a track day.
Very interested in the ETS G35-1050 kit for my R35. It has a big advantage for me having a recirc dump. Not many builds I’ve found using it or dyno’s would love to see more info!
Thank you