How Do You Know What Turbo Do You Have in Your 7.3 L Powerstroke
From 1994 to 2003 Ford used a diesel engine sourced from Navistar International which employed a unique method to get the fuel into the combustion sleeping accommodation, and they did it without using a traditional injection pump: instead, they used oil. The acronym HEUI stands for Hydraulic Electronic Unit of measurement Injector, and information technology's a system where engine oil is pressurized to nigh 3,000psi, and that oil is used to push down on a plunger which in turn forces fuel into the engine. Based on the surface areas of the oil and fuel side of the plunger, in that location is a multiplication effect of 7:1, which means three,000psi of oil will create 21,000psi of fuel inbound the engine. The vii.iii Powerstroke is a two-valve behemoth which measures in at 444 cubic inches and has a maximum stock ability rating of 275hp and 525lb.ft. of torque. While that may not get you downwards the racetrack in a bustle, the vii.3 tin can tow like a champ, gets great fuel mileage for its size, and is i of the more reliable diesel fuel powerplants Ford has used. When it comes to building a high-performance truck, the best part of the HEUI Fords is the fact they weren't equipped with a DPF, so information technology'southward open season on the upgrades. But the question is: where do I offset?
Walk Before You Run: Stage 1
Because the HEUI injection arrangement is controlled by a computer, in that location is some extra power which can exist unlocked with merely a few uncomplicated mods. Grouped together I considered these "Stage One," and the name of the game is airflow in and out. The stock exhaust is particularly restrictive on an OBS 7.3 Ford equally it measures in at only three and a half inches from the transmission to the tail pipe, only that'southward non the worst part. Because clearance between the cab and engine is so tight on the 94-97 trucks, the stock downpipe is crimped in several places and is almost flat which creates a huge bottleneck and causes higher EGT. A consummate replacement exhaust with a organization like the Diamond Eye 5" turbo-back will go your performance upgrades kicked off in the right management. The stock downwardly pipage is replaced with a 3" mandrel bent pipe, and it transitions to 5" near the transmission for minimum brake, and the optional muffler volition give yous an aggressive but non obnoxious sound. A larger exhaust system is well worth the investment and makes a great offset modification, since the payoff is reduced EGT and increased ability.
A common cold air intake is a universal upgrade in the automotive globe and works well to add ability every bit long as the air filter is isolated from engine bay estrus inside an airbox. You lot'll normally accept the selection of a dry or oiled filter, and S&B has you covered whichever way you adopt with their induction system for the vii.three that flows 42% meliorate than stock. Functionally, there's very footling departure between the 2 filters, but a dry filter removes slightly more than dirt, while an oiled filter is cleanable and can be re-used many times over. Only don't forget to pick up an extra filter or cleaning kit to have on-hand for your next service.
If you plan on building past stage one, you'll need the capability to have custom tuning installed into your truck sooner or later, so why not offset with the best? DP-Tuner custom burns chips can exist tailored to work with a stock truck or a full-blown race build, and the multi-position chip they're installed on allows for shift on the wing power changes to suit any conditions. The chip easily installs in the ECM with bones hand tools, and tin can provide an additional 125hp on a stock engine setup, but when larger injectors and bigger turbos are thrown into the mix, all information technology takes is a new calibration to be flashed onto your scrap to get you back in concern.
Similar all modern diesel trucks, the 1999 and newer Powerstrokes in the Superduty platform were equipped with an intercooler, but the OBS 7.3 Fords were not. The air coming from the compressor gets very warm, specially if you are running a tuned truck and that will hinder horsepower. Usually, I don't consider an intercooler upgrade part of stage 1, but for an OBS Powerstroke its almost mandatory to add together one. Normally, this would be a complicated job with custom fabrication required, but Banks makes it a uncomplicated bolt on affair with their Technicooler System for the 1994-1997 Ford F-series. Ordinarily, an intercooler gives some pressure drib, merely the twin-ram intake manifold is and so well designed, it flows eighteen% more air than stock even with an intercooler, plus the air temperature entering the engine is drastically reduced and density goes way up.
Phase Two: Ford Blue
Once the basics are washed with the vii.3, you'll have a truck which tin can tow all solar day long, get peachy fuel mileage, and still be able to drive to the moon and back a couple of times earlier needing an overhaul, but your horsepower number will be effectually the mid 300's at the wheels, which is nothing to write dwelling nearly. The stock turbocharger on a 7.iii is a Garret GTP38 and the inducer measures in at 59.8mm. While this turbo will back up a bit more power than the stock injectors and HPOP volition fuel, there'south no reason to significantly upgrade fueling while still running a stock turbo, so that's the adjacent detail on the chopping block. Your final ability goals will dictate the size of the turbo, and when selecting a fashion of turbo, there are two options: drop-in replacement or S400. The Turbo Thruster 2 from BD Diesel is a perfect selection for about builds. It's a drop-in turbo which means no custom parts are required to brand information technology work; information technology will bolt right in using your existing intake and exhaust components, but the big deal is it features a 66mm billet compressor wheel which volition flow xl% more air than stock. With the proper fueling in place, this turbo will support 600hp yet still give absurd EGTs and quick throttle response. If you want to go nuts with power and shoot for 700 or more, an S400 manner of turbocharger 71mm or larger has always been the go-to, and in guild to install ane on a 7.3, yous'll demand to swap to an upward-pipage with a larger T4 turbine flange. Irate Diesel fuel makes a cracking commodities-on solution for those wanting to make the switch with their vii.3 T4 Mounting Kit. This will allow yous to run either an S300 or 400 turbo, and it will come with everything needed to mount the turbo of your choice. For smashing street manners, an S369 works great, or for high RPM sled pull action, an S471 or larger can be used. Just exist sure to size your turbo appropriately and match the airflow potential with the fuel capacity of your injectors.
HEUI Injector Tech:
When it'due south time to shop for vii.three injectors, you might exist a bit confused if you lot're accustomed to looking at common rail injector specs, since in that location are a ton of numbers thrown around. Typically, a HEUI injector will exist classified by two different numbers, and we'll use the Total Force Stage 3 Hybrid 205/30 injector as an case. The first number is a volume rating in CC which indicates how much fuel volume the plunger crenel will displace over 1,000 shots, and the second number represents how much larger (in percent) the nozzle is over stock. When upgrading injectors, you'll need to size both the nozzle and plunger proportionally to work to their full potential. This particular injector with 205cc worth of fuel and 30% over nozzles can back up 400whp while producing minimal smoke output. It's as well worth noting this is nigh the largest sized injector you'd want to run if you still apply your truck for towing regularly, but information technology volition require custom tuning to be installed. While 400hp is a huge bound over stock, to get closer to that 600hp number, nosotros'll demand to go a bit bigger on fuel. Total Force Diesel has several options to run into your power goals, and a 350/300 Hybrid can exist just the ticket. These bad boys will menstruation enough fuel for 650rwhp but are also a hybrid pattern which means they apply a larger seven.1mm diameter plunger (vs 6.0mm stock) from a "BD" code heavy-duty injector to push more fuel while using less oil book to get the job done. The simply trade-off to a hybrid injector is you'll take a slightly lower injection pressure, since the pattern changes the ratio of the plunger.
Point of No Return:
On a seven.iii, fuel enters the cylinder head at around 60psi, but the rails is a dead-head blueprint which means one time fuel flows in, it stays there until its used past the injectors. That doesn't sound then bad on the surface, but the one way ticket can crusade air pockets to develop, uneven fuel distribution betwixt all eight cylinders, and when operating at low power conditions for an extended period of time (idling or freeway driving) the fuel can get super-heated which turns it into to a sticky residual. This will build upwardly within the injectors and tin can cause poor functioning and even premature injector failure, since the residue tin cause the moving parts to stick. To prevent all this from happening, its necessary to modify the one-way blueprint and brand a path to allow the fuel to constantly broadcast through the cylinder head and return to the tank, keeping the fuel cooler, preventing buildup from occurring, and eliminating air pockets. This is where a Regulated Render fuel system comes into play. This kit from Driven Diesel fuel will eliminate the stock fuel filter bowl on top of the engine, and comes with an adjustable regulator and all the hoses and fittings needed to make the conversion, and is a great investment which will protect your stock or aftermarket high-flow injectors. Of course, if y'all are eliminating your stock filter and making lots of power, y'all'll also exceed the chapters of your stock lift pump. Both of those issues can be solved with a Fuel Air Separation System. If you're making less than 700hp, the 125 GPH version of the pump will be adequate and is the perfect complement to a regulated render system, ensuring nothing but the cleanest fuel enters the engine, and all eight cylinders get the aforementioned volume of fuel.
Finally, on a high functioning HEUI engine, you'll need to address the oiling organisation at some point. The stock high pressure level oil pump has its limit, and if you're running injectors much bigger than 200cc, you lot'll need a greater high-force per unit area oil supply to properly actuate them. Much like adding a second CP3 to a common rail truck, we can add a 2nd oil pump with a Dual HPOP kit. This splits the oil demand between two pumps, which increases performance potential and reliability all at the same time, and it enables you to run the largest injectors with no loss of injection control force per unit area.
C'mon Ford…
The question you need to inquire yourself when considering whether or not to invest some "performance dollars" into your HEUI 7.iii Powerstroke (or any truck for that affair) is how much do I like this truck, how long do I want to keep information technology, and how much power do I actually want to make? If you love your sixteen+ twelvemonth erstwhile truck and can wrap your caput around the fact that you'll never make more power than a modified common rail, spring in headfirst. At that place are plenty of parts available and lots of knowledgeable folks out there, and the engines are very reliable, not to mention incredibly stiff. As long as you put emphasis on cooler EGT and greater air density entering the engine, you volition take a long lasting and efficient powerplant that volition propel your Ford for many years to come. Plus, it will put a giant smile on your face up every time you smash the go pedal.
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Source: https://www.dieselpowerproducts.com/blog/how-to-add-300hp-to-7-3-powerstroke/
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