Stock 6.0 turbo size

Diesel engines require two things to make power: air and also fuel. We understand that"s grossly overstreamlined, yet it"s true. If you rise the engine"s capability to ingest air, you have the right to add even more fuel and thus make more power. On a diesel engine, that often suggests adding a different (or another) turbocharger. While tright here are several afterindustry turbos available for late-model diesels, there"s something we uncover comforting about sticking with the original tools manufacturer, and that"s simply what we did via our 2005 Ford F-350 Super Duty.

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It may come as a surpincrease to some that Garrett (currently going by the name Garrett: Advancing Motion) offers Ford Motor Company and also provided the original devices turbocharger for the 7.3L, 6.0L, and also 6.7L Power Stroke engines. What"s more, the supplier also offers a performance drop-in replacement called PowerMax. Right now, Garrett uses a PowerMax for the 7.3L and also 6.0L Ford Power Stroke, along with the 2004 -to-2010 6.6L Duramax. For our application, we called up the folks at Summit Racing and ordered the GT3788VA PowerMax. Summit had the turbo in stock, and also it was yielded to our door in two days for free, which is pretty challenging to beat these days.


The GT3788VA retains the manufacturing facility electronic devices and also progressed variable nozzle generator (AVNT) design, the mounting pedestal stays the very same, and tright here are no intake or exhaust adjustments vital. The greatest innovation originates from compressor wheel inducer dimension, which increases from 58.0 mm to 63.5 mm. The turbine wheel additionally alters from a 13-blade style to just 10 chisels, while remaining the very same in its entirety size. All this combines to create a turbocharger that looks no different from the outside but is capable of supporting approximately 175 added horsepower. In reality, in previous trial and error via our sister brand also Diesel Power, we discovered the turbo alone provided an additional 50 hp to the wheels.


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See all 21 photos

Now, we know you"re gaining scared because this is a 6.0L we"re functioning on. And yes, this truck already has ARP head studs installed in addition to an upgraded oil cooler. It additionally has actually bigger exhaust up- and downpipes and bigger charge-air pipes. The truck has additionally been custom-tuned to account for the turbocharger and other modifications. So yes, the PowerMax turbo will occupational on a completely stock 6.0L Power Stroke, yet, we"re all mindful of the distinct therapy they need.


Our 2005 F-350 Super Duty was the perfect candidate for the PowerMax upgrade, as after virtually 200,000 miles of faithful business the manufacturing facility turbo was starting to display its age, greatly in regulate of the variable-geometry vanes. Power improvement was immediately noticeable when the PowerMax was mounted. The truck had a noticeable brand-new pep in its step through bthreat acceleration and also practically no discernable lag. Towing a 14,000-pound trailer was made easier by the bigger boost maker, and exhaust gas temperature (EGT) has actually continued to be the same or reduced than via the factory turbo. The only noteworthy downside we noticed was an exponential rise in turbo whistle, though for 6.0L owners this is hardly a downside at all.


The install took us just three hrs to finish, functioning in the drivemethod with basic handdevices and a fair little bit of knowledge and also suffer. If it"s your initially time, block out a day on the calendar to complete the task. Overall, we"re exceptionally pleased via the new lease on life the PowerMax has provided our truck and also recommend it for all 6.0L owners.


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See all 21 photosSwapping the turbocharger on a 6.0L Power Stroke is a fairly straightforward job. Similar to many V-shaped diesel engines, the turbo is situated at the rear of the lifter valley. Thankfully, in this application, the turbo isn"t deep sufficient under the cowl to cause any kind of problems.
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See all 21 photosGetting to the turbo is kind of a choose-your-own adventure, in that there"s no appropriate or wrong order of component removal to gain to it. We began the swap by removing the hot-side intercooler pipe from the turbo"s compressor outlet.
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See all 21 photosNext off, we removed the manufacturing facility airbox and intake piping from the inlet side of the turbo compressor housing. Yes, this truck still utilizes the manufacturing facility airbox, as the stock Donaldboy filter is among the finest on the market. The limited airflow is worth the reliability to the truck"s owner.
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See all 21 photosThe final pieces blocking our watch of the turbocharger are a wire chase and also the coolant degas bottle, both of which are attached to the cowl. We carefully rerelocated the plastic clips holding the wire chase in location and secured it out of the method via a bungee cord. After removing the two bolts holding the degas bottle in area, it"s gently placed out of the method. There"s no need to drain any kind of coolant for this task.
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See all 21 photosAfter the manufacturing facility turbo is rendered obtainable, there are a few even more measures that have to be taken before it deserve to be removed from the truck. There is an oil feed line that routes to the optimal of the turbocharger"s centersection, along with a plug for the variable-geomeattempt vane manage. Around ago, the V-band clamps for the exhaust up- and also downpipes also must be removed. Finally, tright here are 3 bolts that connect the turbo to the engine block.
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See all 21 photosOnce free, the turbo have the right to be lifted up and out of its position in the valley. It"s a tight fit, and also we"ve learned it"s most basic to come out toward the passenger side of the engine bay. If it appears challenging at first, provide the charger a slight rotation and wiggle—and also it"ll come appropriate out.

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See all 21 photosWith the turbo removed, we acquire the clearemainder photo yet of just how every little thing is arranged under the hood. Believe it or not, the 6.0L Power Stroke is just one of the simpler diesel engines to job-related on. If you do not believe us, go pop the hood on a more recent 6.7L truck
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See all 21 photosThe PowerMax (left) is an improved version of the manufacturing facility Garrett turbocharger provided on the 6.0L Power Stroke. With drop-in turbo replacements becoming all the rage these days, it"s basic to foracquire Garrett has been supplying precisely that via its aftermarket department for even more than a decade. One of the biggest differences, and driver of performance, is the increase in compressor wheel inducer size from 58.0 mm to 63.5 mm.
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See all 21 photosAs it"s a straight drop-in replacement, the just part from the old manufacturing facility turbo that required to be swapped over to the PowerMax was a warm shield. After snugging via an electrical driver, the bolts were torqued to spec.
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See all 21 photosWhen replacing a 6.0L Power Stroke turbo, tbelow are 2 things that should be reput. One is the oil return O-ring, and the various other is a gasket on the oil feed line. Both deserve to be found digital or at the neighborhood Ford dealer. They are crucial to relocation, however, as the last thing you need is an oil leak.
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See all 21 photosThe oil rerevolve tube is press-fit and is hosted in location by the turbocharger. Before installing the brand-new turbo, the drain tube was gently put earlier in place via the new O-rings. Care must be taken once installing the turbo to not damages the O-rings or dislocation the drain tube.
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See all 21 photosWorking in reverse of disassembly, the brand-new PowerMax turbo was lowered into place with the same opening. It"s feasible to come in from the driver side of the engine bay, however we still uncover the passenger side to be less cluttered.
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See all 21 photosYou"ll understand every little thing is seated effectively once the exhaust up- and downpipes align. Due to the fact that the PowerMax is a straight drop-in replacement, no exhaust or intake adjustments are crucial.
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See all 21 photosWith whatever lined up, we began the job of reinstalling the hardware removed from the factory turbo. Once snug, all bolts are torqued to spec, via a tiny 3/8-inch drive torque wrench coming in very handy.
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See all 21 photosDon"t forgain to plug in the variable-vane manage. The PowerMax turbo attributes the same progressed variable nozzle generator (AVNT) architecture as the factory charger. Using infinitely variable vanes in the exhaust housing, this AVNT modern technology gives raised compressor circulation and increase response once compared to older, fixed-geometry turbos.
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See all 21 photosDue to the fact that the turbo is brand-new, it is vital to lube the cartridge bearings prior to firing up the engine for the initially time. Using a basic hand also pump, we fed oil right into the turbo via the oil inlet while rotating the compressor wheel. It does not take a lot yet is necessary not to forobtain.
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See all 21 photosAlso necessary not to forobtain is the oil feed line and also the new gasket pointed out prior. Oil gives both lubrication and cooling for the Garrett turbo, so keeping a consistent flow through the facility core and bearings is instrumental.
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See all 21 photosWe wrapped up the task by tightening the exhaust V-band clamp adhered to by all the accessories removed previously in reverse order. The hot-side intercooler pipe, air intake, wire chase, and also degas bottle were all bolted ago right into position.

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Sticky VanesIn situation you"re not acquainted with just how the Garrett variable-geomeattempt turbocharger functions on a 6.0L Power Stroke, here"s a quick primer to obtain you approximately speed. Inside the exhaust housing, there are nine movable, aerodynamically designed vanes. These vanes are linked through a steel plate and relocate in uniboy, controlled by an electro-hydraulic actuator (electric actuator and also oil pressure). These vanes are supplied to transform the efficient aspect ratio of the exhaust real estate. Variable-geometry turbochargers create exceptionally little bit lag off idle and are very reliable at better speeds. The downside is that over time the relocating components deserve to wear out and exhaust soot deserve to cause the vanes to stick in one place or not move smoothly, affecting performance of both the turbocharger and also the engine. Ford 6.0L Power Stroke turbos are particularly vulnerable to this and also have to have actually the exhaust housings removed and cleaned whenever the turbo is removed from the engine. Despite numerous cleanings in its lifetime, our 200,000-mile turbo finally yielded to its age, though not through full failure however rather a diminished ability to adjust the vanes properly.


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