**ignore this, just compiling for reference**
at some point:
https://www.garrettmotion.com/news/n...00-horsepower/
TURBOCHARGER(S)
Turbocharger: Garrett GTX5009R
Frame: GT50
Compressor Wheel Specs: 80mm Inducer, 108mm Exducer, 55 Trim, .69 A/R
Turbine Wheel Specs: 99mm Inducer, 91mm Exducer, 84 Trim
Turbine Housing: T6 .96 A/R
Turbocharger: Garrett GTX5533R Gen 2
Frame: GT55
Compressor Wheel Specs: 94mm Inducer, 133mm Exducer, 50 Trim, .96 A/R
Turbine Wheel Specs: 112mm Inducer, 102mm Exducer, 84 Trim
Turbine Housing: T6 1.24 A/R
Peak Boost: 106psi
***
2019 pikes peak:
https://www.dieselarmy.com/news/chuc...th-toyo-tires/
The compounds on board are a Garrett GTX 58MM secondary charger fed by a Garrett GTX 70-MM atmosphere turbo. That may not seem all that enormous, but its enough for what they’re setting out to do.
If you were to put a more traditional “big power” set of compounds on this truck, at this elevation, it wouldn’t have the excellent acceleration they’re after. In fact, prior to Pikes Peak, Smokey had a larger 80-MM / 106-MM combination.
***
2020 pikes peak:
https://www.enginebuildermag.com/202...turbo-cummins/
twin Garrett turbochargers on it – a G42-1450 for the big one and a GTW3884 for the small one – those are 80mm and 67mm.
Old Smokey’s 6.7L Cummins is what Freedom Racing Engines calls its Stage 2 build. It’s a 6.7L bored .020˝ over and was drilled and tapped for 14x2mm head studs and the mains were drilled and tapped for 9/16ths main bolts. The block was also line bored for cam bearings throughout the entire cam tunnel and features a Hamilton Cams 188/220 camshaft