Diesel Power Challenge 2018 Competitor Zach Scoles – #DPC2018
Beauty Is a Beast
Zach Scoles’ Bluffton Diesel Service started as a side business, maintaining local farmers’ pickup trucks, and became official (in the eyes of the government) in July 2015.
Zach and his right-hand man Jason Brown have done all the work getting his ’04 Ford F-250 to a point where it is ready for Diesel Power Challenge 2018 Presented by XDP. As of May 19, the engine was back between the framerails—after Zach discovered the limits of its stock bottom end during a test and adjustment session (105 psi of boost and 4,500 rpm resulted in four bent rods and a hurt transmission).
When the DPC voting results were announced, Zach, Jason, and transmission builder (and Diesel Power Challenge 2016 alum) David Ferguson decided to make some wholesale changes. Red Diamond Diesel’s experimental test parts were installed on the Stage 3 billet transmission, and the decision was made to move to a billet four-disc torque converter with higher stall speed.
The engine was stripped down to the bare block and rebuilt in-house with a long list of new components and a racing mindset. “We want to make sure we can make good, reliable power, but still look good doing it,” Zach says. “We have set up a base for some other updates we hoped to make (a BorgWarner S472 pressure turbocharger, different piping, custom-runner intake manifold, water-to-air intercooler, and such), but due to time limitations—and the fact that we know our package will work—we decided to stick with the current S369 in the valley, ported intake, and Mishimoto air-to-air ’cooler.”
Zach and team were a bit stressed to get the truck ready for DPC, but they think they’re up for the challenge.
“David, a previous DPC competitor, is one of our crewmembers, along with Jason and Sam Gabel,” Zach says.
As far as the competition goes, Zach tells us he’s proceeding with caution. “We will certainly give it our best effort in making sure we represent the Ford crowd well. We literally dissected this truck down to every last bolt—more than once.” Although he’s at a slight disadvantage by not having test time on the truck’s new engine, Zach heads to Denver with confidence, knowing that with the exception of the transmission, he and Jason did everything themselves (and David is a crewmember, so support will be there).
Build SheetYear/Make/Model: ’04 Ford F-250
Owner: Zach Scoles
Hometown: Bluffton, Ohio
Odometer: 94,783 miles
Engine: 6.0L Power Stroke V-8, modified crankshaft, ATI damper, Wagler Competition Products connecting rods, race-bowl pistons by BDS, River City Diesel billet camshaft, Manton lifters, pushrods, modified high-pressure oiling system, modified cooling system, Mishimoto radiator, clear-view oil filtration, Maryland Performance Diesel oil-cooler delete, Fluidyne oil cooler, O-ringed block and cylinder heads by Red Diamond Diesel, ported heads, ARP 625 cylinder-head studs
ECM Tuning: HP Tuners with tuning by Paul Cato at Maverick Diesel
Fuel: Beans Diesel Performance sump, Aeromotive A1000 lift pump, regulator, Warren Diesel 8mm 330cc/150-percent-over injectors
Air: BorgWarner S488 and S369 SX-E turbochargers, Mishimoto air-to-air intercooler, custom tubing, ported intake manifold by Bluffton Diesel Service, Turbosmart wastegates
Exhaust: Steed Speed manifolds, 4-inch 304 stainless steel tubing
Transmission: Stage 3 5R110 five-speed automatic by Red Diamond Diesel, Diesel Performance Converters billet four-disc torque converter
Lubricants: Amsoil 5W-40 engine oil, ATF, 75W-140 gear lube
Horsepower: 1,100 hp
Torque: 2,100 lb-ft
Tires: 35x12.5R22 Cooper Discoverer STT Pro
Wheels: 22x12 Fuel FF12
Suspension: Rough Country 4-inch lift, Bluffton Diesel Service traction bars, dual steering stabilizers, Bilstein 5160 Series remote-reservoir shocks
Axles: 4.30 gears