6.7L Cummins Long Block QSB Diesel Engine, Rear Gear

CHOATE 6.7L Long Block Daily Driver Engine 2007-2018 – Dodge Cummins Diesel Engine

Manufacturer: CHOATE Engineering Performance

CHOATE Part Number: CEP67QRDI

Fitment : 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018

This 6.7L QSB Diesel Engine Includes:

• Our Built-In-House Heads
• Magnuflux and Pressure Test Heads, Cut Valves, New Induction-Hardened Seats, All New Valve Guides, Install New Valve Seals, Test Spring Tension
• Full CNC blueprint machining, (bore, deck, hone, and line honed)
• The Cylinder bores are blueprint bored from the crankshaft centerline, prior to being diamond-honed to within .0002 inch for the precise piston to cylinder bore clearances.
• The main bore (line bore) for the crankshaft is honed to precisely align the crankshaft in the engine block.
• Bore block back to crankshaft centerline Honed Block to RA13 finish. Piston diameter measured to the nearest .0001 inch matched to cylinder bores.
• The cylinder block is surfaced to sa finish of RA30 or lower, which exceeds the factory specification in both flatness and smoothness for the block to head sealing surface.
• This is mandatory for proper sealing of an MLS Gasket
• Check both wrist pin and crank pin to rod clearancess
• Crankshaft is Polished and ground to .0005 concentricity or less
• NEW Pistons, Rings, Pin Retainers weight-matched prior to crank balancing
• New Tappets, Main Cap
• New Rod, Main, and Cam Bearings
• Camshaft – Polished and Inspected
• Head studs included in our Daily Driver build, New Head Gaskets
• Install Rear Main Seal
• Oil Pan Gaskets
• Pickup Tube Gasket
• Rear Cover Installed
• Front Cover Gasket
• Head Gasket
• Blow proof 6.7 Freeze plugs designed in house by our Engineers at Choate.

Description:

The QSB 6.7L Cummins is used in many applications including yard tractors and several types of industrial equipment, for model years 2007-2018. This Common Rail engine also used in marine vessels, agricultural machinery, construction equipment, mining equipment, rail engines, and material-handling equipment​

• Perfect for daily driving use, family haulers, some towing.
• Great commercial warranty on with upgradeable options
• Installed in house in the USA with our profession team.

Common Issues With The QSB Cummins 6.7L Diesel Engine (and how we fix them)

Cylinder Heads- While there aren’t as many issues with the bottom end of the Cummins, there are really BIG problems in the head department.

Valve seats fallout contacting the piston and cause catastrophic failure. We machine oversize valve seats within increased press fit area to remedy this issue.

Stamped gallery plugs in the heads blow out causing a mixture of oil and coolant, destroying the bearings. We thread the head and insert threaded plugs to make sure this issue never rears its ugly head.

Plus: Freeze plugs in the block blow out leaving you at best stranded on the side of the road, at worst, with a severely overheated engine in need of remanufacturing. Every new Choate Cummins engine comes standard with billet freeze plugs that are blow out proof using a tie bar bolting them into the side of the block.

What does blueprinting an engine mean?

All our 6.7 Cummins QSB Diesel Engines come with a Billet Blow-Proof Freeze Plugs

Piston Cracking is a real problem! Watch this video to see what we do to fix that!

Do you really need balancing though? Or is it just a lot of hype?