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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

2011 Ranger (Beef Up Project)

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2011 Ranger (Beef Up Project)

Hey guys, I just joined the forum. I looked around for a bit for an answer, but alot of the threads were a little old.

I recently purchased a:

2011 Ford Ranger Sport
99k miles
V6 4.0L 2WD

so far, I've added an exhaust and KN cool air intake. I love the power in this little truck, but I want to add more. I'm willing to put some money into it because I saved a ton not buying a new full size (my original plan).

I'm just looking for what else I can do....headers, chip, supercharge, turbocharge, etc...

thanks in advance
 
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Welcome to the forum

You can gain quite a bit just by running Premium fuel, 93 octane
You have the 4.0l SOHC engine which runs 9.7:1 compression ratio, so will Ping/Knock on Regular 87 octane fuel, 9.3:1 is about the limit for Regular fuel
Ford gets the 205HP number from that higher compression but...............only when using higher octane fuel
So with regular gas you are probably running about 185HP maybe less

There is a Knock sensor on the engine, and the computer changes spark timing to prevent pinging/knocking on Regular gas, so Horse Power is reduced
You would never "hear" the pinging, thats the point of the Knock sensor

Computer tuning(not chips) seem to work well with the 4.0l SOHC, no I don't know any one, but call Speed Shops in your area, they will know local guys that tune Ford computers

Swap out the mechanical fan for an electric fan on the radiator, that frees up horse power

Rangers already have a tuned exhaust, but it is tuned for mid RPM range power, you can put on low RPM range headers, if you want power at low RPM band

Super charger is the better option for this engine, but..............anytime you increase Air Flow you increase the explosive power inside the cylinders, which is where the extra power comes from, I know, DUH
The engine was designed for its 205HP rating, by increasing this number you stand a good chance of something breaking, and super or turbo chargers increase HP number significantly which is why people use them.

Another but..........a super or turbo charger's power increase is more, percentage wise, on lower compression engines, so better to super/turbo charge 9.0:1 engine than a 10.0:1 engine, you still get more power, just not as big of a change, you need to run the numbers, and look into it on your own.

Turbo chargers are cheaper and easier to design and install at the factory, which is why they are more popular in factory built car/engines
Superchargers tend to be easier to add by customizers/DIYers, especially on V engines because they take up less room in engine bays, verses twin Turbos

Super chargers have a Boost Limit, but have a more stable power curve, as you accelerate the power curve is predictable
Turbo chargers have higher boost potential, but power curve can be abrupt as turbo "spools up" or Waste gate opens
 

Last edited by RonD; 1 Week Ago at 10:29 AM.
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Originally Posted by RonD View Post
Welcome to the forum

You can gain quite a bit just by running Premium fuel, 93 octane
You have the 4.0l SOHC engine which runs 9.7:1 compression ratio, so will Ping/Knock on Regular 87 octane fuel, 9.3:1 is about the limit for Regular fuel
Ford gets the 205HP number from that higher compression but...............only when using higher octane fuel
So with regular gas you are probably running about 185HP maybe less

There is a Knock sensor on the engine, and the computer changes spark timing to prevent pinging/knocking on Regular gas, so Horse Power is reduced
You would never "hear" the pinging, thats the point of the Knock sensor

Computer tuning(not chips) seem to work well with the 4.0l SOHC, no I don't know any one, but call Speed Shops in your area, they will know local guys that tune Ford computers

Swap out the mechanical fan for an electric fan on the radiator, that frees up horse power

Rangers already have a tuned exhaust, but it is tuned for mid RPM range power, you can put on low RPM range headers, if you want power at low RPM band

Super charger is the better option for this engine, but..............anytime you increase Air Flow you increase the explosive power inside the cylinders, which is where the extra power comes from, I know, DUH
The engine was designed for its 205HP rating, by increasing this number you stand a good chance of something breaking, and super or turbo chargers increase HP number significantly which is why people use them.

Another but..........a super or turbo charger's power increase is more, percentage wise, on lower compression engines, so better to super/turbo charge 9.0:1 engine than a 10.0:1 engine, you still get more power, just not as big of a change, you need to run the numbers, and look into it on your own.

Turbo chargers are cheaper and easier to design and install at the factory, which is why they are more popular in factory built car/engines
Superchargers tend to be easier to add by customizers/DIYers, especially on V engines because they take up less room in engine bays, verses twin Turbos
Thanks for the quick reply bro. What is the difference between Super Charge and Turbo Charger?
 
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Super charger runs off, is powered by, the main crank pulley, fan belt, it is basically an engine powered air compressor, it sits on top the lower intake manifold
Turbo charger is powered by exhaust flow, there is a fan setup in the exhaust pipe connected to a fan on a fresh air pipe, as exhaust flow spins its fan the other fan spins and compresses the fresh air which flows into upper intake manifold.

So you have a direct drive and an indirect drive air compressor
So it won't block exhaust flow the turbos exhaust fan blades have to be smaller so at lower RPMs they still allow exhaust to flow, so turbos don't "spool up" until mid RPM range giving Boost Pressure
Super charger's boost increases directly with RPM so predictable power increase as RPMs increase

The reason either works is pretty simple
Gasoline has a fixed air:fuel ratio and it is a WEIGHT RATIO, 14.7:1 air:fuel
14.7 POUNDS of air to 1 POUND of gasoline
14.7 GRAMS of air to 1 GRAM of gasoline
Too much gasoline and you get a Flooded Engine, to little gasoline and your engine will MELT, or stop running, lol.

When any engine burns, say 1 GRAM of gasoline, it will release XX amount of energy/power, nothing in the world can change that, the power released is set in stone.
A 2 LITER engine has less power than a 5 LITER engine because the 5 LITER engine can suck in 3 MORE LITERS of air every 2 RPMs, so can burn more GRAMS of gasoline every 2 RPMs, so can release more energy/power every 2 RPMs.
Simple as that, more air = more power

So if you FORCE 3 more LITERS of air into the 2 LITER engine every 2 RPMs, it can use the same amount of gasoline and release the same amount of power as the 5 LITER engine

Nitrous oxide does the same thing, it is in essence compressed air, Oxygen in a bottle, so allows engine to burn more gasoline every 2 RPM releasing more energy/power
 

Last edited by RonD; 1 Week Ago at 11:01 AM.
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Originally Posted by RonD View Post
Super charger runs off, is powered by, the main crank pulley, fan belt, it is basically an engine powered air compressor, it sits on top the lower intake manifold
Turbo charger is powered by exhaust flow, there is a fan setup in the exhaust pipe connected to a fan on a fresh air pipe, as exhaust flow spins its fan the other fan spins and compresses the fresh air which flows into upper intake manifold.

So you have a direct drive and an indirect drive air compressor
So it won't block exhaust flow the turbos exhaust fan blades have to be smaller so at lower RPMs they still allow exhaust to flow, so turbos don't "spool up" until mid RPM range giving Boost Pressure
Super charger's boost increases directly with RPM so predictable power increase as RPMs increase

The reason either works is pretty simple
Gasoline has a fixed air:fuel ratio and it is a WEIGHT RATIO, 14.7:1 air:fuel
14.7 POUNDS of air to 1 POUND of gasoline
14.7 GRAMS of air to 1 GRAM of gasoline
Too much gasoline and you get a Flooded Engine, to little gasoline and your engine will MELT, or stop running, lol.

When any engine burns, say 1 GRAM of gasoline, it will release XX amount of energy/power, nothing in the world can change that, the power released is set in stone.
A 2 LITER engine has less power than a 5 LITER engine because the 5 LITER engine can suck in 3 MORE LITERS of air every 2 RPMs, so can burn more GRAMS of gasoline every 2 RPMs, so can release more energy/power every 2 RPMs.
Simple as that, more air = more power

So if you FORCE 3 more LITERS of air into the 2 LITER engine every 2 RPMs, it can use the same amount of gasoline and release the same amount of power as the 5 LITER
Compressed air
Nitrous oxide does the same thing, it is in essence compressed air, Oxygen in a bottle, so allows engine to burn more gasoline every 2 RPM releasing more energy/power
Thanks great info. If you were me, what would you do? If money wasnt an issue...? Within reason lol
 
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You live in California..................so I would read emissions requirements and talk to a few Speed Shops to see what is allowed, FIRST
Super or turbo charging may not pass emissions tests, so you have a fast truck with no Plates

The mechanical fan to electric is a good swap and not related to emissions

Running Premium fuel as well

Tuners can get you a good tune that will still pass emissions or a "software" change just for passing emissions, but didn't hear that from me, lol.
 
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Originally Posted by RonD View Post
You live in California..................so I would read emissions requirements and talk to a few Speed Shops to see what is allowed, FIRST
Super or turbo charging may not pass emissions tests, so you have a fast truck with no Plates

The mechanical fan to electric is a good swap and not related to emissions

Running Premium fuel as well

Tuners can get you a good tune that will still pass emissions or a "software" change just for passing emissions, but didn't hear that from me, lol.
haha got you.. could you recommend a supercharger? Or, any company that does Ranger mods for that matter
 
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Check Mustang forums, the 2005–2010 Ford Mustang used the same 4.0l SOHC engine, there will be more info about performance upgrades on those sites, i.e. supercharging
Ranger sites tend to be more about lifts and off-road

You can get adjustable shocks that can be set for softer ride on the road and stiffer ride off road

The Pre-runner name came from CHEAP 2WD trucks used by off-road racers to "pre-run" the off-road course at high speed before running it with their EXPENSIVE Vehicles, so they could crash or run off into the "bush" in the Pre-runner on a tight turn or drop off and not break the bank repairing it

The old VW "Baja bugs" were the first pre-runners, lol, then they got their own race category, go figure

The name has taken a bit of a turn in the cost department, now it describes a 2WD, truck usually, setup as an off-road 4x4 would be
Generally this includes longer travel on the suspension, larger diameter tires

Look at "builds" on this forum for 4x4s and 2WDs it all applies, to find something in your budget and idea of what you are after.

I personally never saw any benefit to current "Pre-runners", if you are going off-road then make it a 4x4, not 2WD or even AWD(which is NOT the same as 4WD)
 
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Awesome. Thanks for the info
 
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