How much horsepower does a 12-Valve Cummins have?
The 12-valve 5.9L 6BT Cummins came out of the box with 230hp, 440 lb-ft of torque and a P7100 inline injection pump. While it began life as an agricultural engine, its popularity picked up immensely once it was put into Ram trucks starting in 1989. 12 Cylinders, 4 Turbos in a Factory-Built Ford?
How many valves does a 24V Cummins have?
1998.5-2002 24V Cummins (24 Valves) Specs In 1998, a revised version of the 2nd Gen Cummins was introduced. It retained the same body style, but big mechanical changes were made. The new 5.9L Cummins engine had 24 valves, or 4 valves per cylinder.
How much horsepower&torque does a Cummins Engine have?
12V 5.9L Cummins Horsepower & Torque Year Trans Horsepower Torque 1994-1995 Auto 160 horsepower 400 lb-ft 1994-1995 Manual 175 horsepower 420 lb-ft 1996-1998 Auto 180 horsepower 420 lb-ft 1996-1998 Manual 215 horsepower 440 lb-ft
How much horsepower does a 1998 Cummins Cummins have?
Trucks from 1998 with automatic transmissions make 215 horsepower and 420 lb-ft of torque. Cummins dramatically changed the late 2nd Gen Cummins engine. By doubling the valves, overall performance improves. Drivability improves because of better throttle response.
How much HP can a stock 12v Cummins handle?
800 rwhpThe forged-steel connecting rods found in the 12-valve 5.9L (and '98.5-'02 24-valve engines) are of an I-beam design and capable of easily handling 800 rwhp in stock form.
How much HP does a stock 5.9 Cummins have?
325hpThe common-rail 5.9L Cummins was produced from 2003-2007 and featured a fixed-geometry turbo. It put out 325hp and 610 lb-ft of torque by the end of its run, along with 359 ci of displacement coming from a bore of 4.02 in and stroke of 4.72 in.
How much power can you get from a 12v Cummins?
Though it's quite restrictive, the factory cast-iron 12-valve cylinder head will allow you to reach 500 hp, but that aged head gasket might not live at 35-45 psi of boost.
Is a 12 or 24 valve Cummins better?
In summary, those looking to keep things stock or modest the 24v is the better street engine. If you're looking for extreme power and performance the older 12v Cummins engine is likely the better choice.
What year is the best 12-valve Cummins?
Among its strong suits are;P7100 (The Holy Grail) While the 12-valve was built from 1989 to 1998, most people look for the 1994-98 model. ... Affordable Injector Upgrades. ... Simple Designs. ... HX35: ... Free Horsepower.
How much HP can a stock 5.9 Cummins turbo handle?
The 5.9L inline-six mill's factory rotating assembly from '89 to '02 is capable of handling 800 hp (1,400 to 1,600 lb-ft of torque) without breaking a sweat, and is often pushed into four-digit territory before aftermarket rods become a consideration.
How many MPG does a 12v Cummins get?
All five trucks we own average 29 MPG highway, and 24 MPG in town. Cummins 5.9L has the fuel economy, speed, and the power to pull.
How do I increase the horsepower on my 12-valve Cummins?
5:0410:57Double The Horsepower of Your 12 Valve Cummins | Power Driven DieselYouTubeStart of suggested clipEnd of suggested clipThis is a Southbank clutch. This clutch is capable of supporting 425 horsepower which is moreMoreThis is a Southbank clutch. This clutch is capable of supporting 425 horsepower which is more horsepower than the factory to revoke and support for this particular build it's a great.
Why are 12v Cummins so good?
What made the Cummins so popular was the fact that its peak power and torque was insanely usable—in fact, the redline is only at 3,000 RPM! The 12-valve was able to get respectable fuel economy while producing torque figures never-before seen in an ordinary pickup truck.
Can you tune a 12-valve Cummins?
0:011:00How to tune a 12 valve Cummins - YouTubeYouTubeStart of suggested clipEnd of suggested clipToday we're going to tune up a 12 out first thing you need is one of chaps is tune-up kits now we'reMoreToday we're going to tune up a 12 out first thing you need is one of chaps is tune-up kits now we're tuning up your motor there's a few things you want to do you don't want to hit the starter.
How much does a 12-valve Cummins cost?
Going the 12-valve, 5R110 route can be pulled off for $12,000 to $15,000 at a shop that's seasoned in Cummins swaps. Sprinkle in a little more power and the cost obviously goes up, but for a basic, 350hp (ish) 5.9L-powered '03-'10 Super Duty you'll get a Cummins repower that's cleanly done and rock-solid reliable.
Are 12v Cummins reliable?
The Cummins 12v/6BT is widely regarded as the best and most reliable diesel engine ever produced. These engines are extremely simplistic, operating with mostly mechanical components rather than complicated electronic ones. The simplicity allows for massive power potential in conjunction with ultimate reliability.
How many valves does a Cummins 2nd generation have?
Because both 12 valve and 24 valve variations of the Cummins engine are found on the second generation Cummins, pay special attention to the years listed. 2nd Generation Cummins specs are going to vary slightly between model year.
What year did Cummins use a 24 valve?
The 24 Valve 5.9L Cummins used the same turbocharger as 12V models from 1994 -1998. The Holset HX35W was used on all models until 01′ and 02′. In these years, trucks with automatic transmissions used a HY35W turbocharger.
What engine did the 1998 Dodge Ram have?
In 1998, a revised version of the 2nd Gen Cummins was introduced. It retained the same body style, but big mechanical changes were made. The new 5.9L Cummins engine had 24 valves, or 4 valves per cylinder. The mechanical “P-Pump formally known as the Bosch P7100 fuel injection pump was replaced with a rotary electric VP44 injection pump. This injection pump is one of the most common 2nd Generation Cummins problems. Other 2nd Gen Cummins specs were changed as well, that helped Dodge trucks stay slightly above their competitors. 1998 Dodge Ram trucks with the 24 valve 5.9L Dodge Cummins engine produce 235 horsepower and 460 lb-ft of torque when paired with the 5-Speed Manual transmission. Trucks from 1998 with automatic transmissions make 215 horsepower and 420 lb-ft of torque.
What turbocharger is used in a 1994 Dodge Cummins?
This turbocharger is known as the Holset H1C. Late 1994-1998 2nd Gen Cummins trucks have a different turbo. They have an upgraded Holset HX35W or HX35 turbocharger.
Why is the 24V engine better than the 12V?
Drivability improves because of better throttle response. The 24V engine configuration also allows for much better coolant flow compared to the previous 12V engine. Another big change is the new “53” engine block.
What is a 2nd generation Cummins?
As a result, they kept the 5.9L Cummins and made some adjustments to improve them. The term 2nd generation Cummins refers to Dodge diesel pickups between 1994-2002. There are two variations of the 2nd gen Cummins though. 1994-1998 trucks feature 12 valves and are very similar to the previous trucks engines.
What is VP44 injection pump?
The change to an electric rotary injection pump was a big step for Cummins. The VP44 injection pump works with the ECU to control fuel injection timing and fuel flow. An electric lift pump was introduced to help keep fuel pressure constant. This lift pump is actually one of the most common reasons the VP44 pump fails. If it doesn’t get the proper fuel supply it’s very likely to break. Aftermarket lift pumps like an Air Dog or Fass system is highly recommended! Despite moving to an electric rotary fuel injection pump, mechanical injectors are still used on late second generation Dodge Cummins trucks. They were re-located however which makes servicing them easier, as well as improves the spray pattern for a better combustion sequence.
1. Simple Design
Meet the 12-valve version of the 5.9L Cummins, produced from ’89-'98. A cast-iron block and head, forged-steel crankshaft and connecting rods, an inline-six design and mechanically controlled direct injection all play into the hands of a power plant built for maximum reliability and longevity.
2. Stout Connecting Rods
The forged-steel connecting rods found in the 12-valve 5.9L (and ’98.5-’02 24-valve engines) are of an I-beam design and capable of easily handling 800 rwhp in stock form.
3. Heavy-Duty Rod Bolts
Even though the factory rods can handle north of 800 rwhp, the stock rod bolts are on borrowed time past this point as they can back out with age and increased engine speeds. Luckily, ARP manufactures heavy-duty rod bolts for the ’89-’02 5.9L, which offer approximately 23 percent more tensile strength than the factory units (PN 247-6303).
4. 6 Bolts Per Cylinder
With six 12-mm diameter head bolts per cylinder, the 5.9L Cummins is rarely ever at risk of blowing a head gasket, even with serious boost and cylinder pressure in the equation. In fact, the stock head bolts can stand up to as much as 100 psi of boost before stretching! For this reason, a lot of 5.9L gurus simply re-torque the factory hardware (vs.
5. P7100 (The Holy Grail)
While the 12-valve was produced from ’89-’98, most folks seek out the ’94-’98 version. These engines were equipped with the mechanical Bosch P7100 injection pump (also known as “P-pump” or inline pump), which features six plunger and barrel assemblies, a cam and delivery valves.
6. Free Horsepower
Being a mechanically-injected engine, you’re not beholden to electronically interfacing with the ECM when you make fueling changes on the 12-valve Cummins. This means you can add horsepower with a few simple hand tools and your own two hands.
7. Interchangeable Parts
While not everything is interchangeable between the ’89-’93 5.9L and the ’94-’98 versions, a host of parts can be swapped over.
How much boost does a turbo have?
Cylinder pressure does, which can be increased by higher drive pressures created by a bigger turbo, as well as timing. Yes, the rule of thumb is 40-50 psi of boost, but that's more because of the increased drive pressures associated with more boost.
Why won't my turbo get the same boost?
It can happen that a bigger turbo won't achieve the same peak boost because of having a bigger exhaust housing. It can also happen that an aftermarket turbo with roughly the same (or smaller) exhaust housing but a bigger and/or more efficient compressor can make more boost.
Do bigger turbos lower boost?
Bigger turbos dont mean moe boost in fact the lower your boost. You flow more air with a bigger turbo so you don't have to compress (boost) as much as a smaller turbo flowing less air.
Does drive pressure blow head gaskets?
I am one of the advocated that drive pressure does not blow head gaskets, alone, but it does effect cylinder pressure! If your drive pressure is higher than your boot than your not getting a good airflow thru the motor, and your leaving air in the cylinder. It has to do more with effecting flow than peak pressure, this is why it doesn't pop HG's (directly) but does effect cylinder pressure.. Thou it mostly makes for a lower cylinder pressure and thus a less efficient combustion. But in some cases the cam timing actually allows the excess DP to effect total air in the cylinder and pop the gasket on the powerstroke, i.e. the 6.7.#N#A bigger turbo will lower the drive pressure ratio, but it may not lower overall drive pressure. If your making 30 psi of boost and 40 psi of drive with the stock turbo you are inefficient, if you are making 45 psi of boost and 45 psi of drive with a bigger turbo you are more efficient and making more drive pressure. Either way if drive pressure exceeds the valve spring pressure you have the ability to open the exhaust valve with back pressure when the piston is near BDC on the exhaust stroke, or essentially you are keeping it open longer than the cam is calling for.#N#In the case of my turbo upgrade I am running less boost, much lower DP, and am moving more air thru the motor and probably have higher cylinder pressures.#N#Do you monitor drive pressure on your truck? (guessing not by the nature of your comments) 50 psi of boost on a 64/65 is going to take at least 50 psi of drive pressure, probably 60+ until the WG opens.
Does a bigger turbo lower the drive pressure?
A bigger turbo will lower the drive pressure ratio, but it may not lower overall drive pressure. If your making 30 psi of boost and 40 psi of drive with the stock turbo you are inefficient, if you are making 45 psi of boost and 45 psi of drive with a bigger turbo you are more efficient and making more drive pressure.
Performance
Design
- The forged-steel connecting rods found in the 12-valve 5.9L (and 98.5-02 24-valve engines) are of an I-beam design and capable of easily handling 800 rwhp in stock form. For drag race and sled pull applications, a host of aftermarket companies offer polished, shot-peened and balanced versions of the factory rod, which can be made to withstand 1,200...
Safety
- With six 12-mm diameter head bolts per cylinder, the 5.9L Cummins is rarely ever at risk of blowing a head gasket, even with serious boost and cylinder pressure in the equation. In fact, the stock head bolts can stand up to as much as 100 psi of boost before stretching! For this reason, a lot of 5.9L gurus simply re-torque the factory hardware (vs. adding head studs) before pushing b…
Example
- In this photo, the owner of a 94 Dodge Ram re-tightened the head bolts (from the center out) to 150 ft-lb at the same time he added a compound turbo arrangement. His fuel and air mods would eventually subject the stock head bolts to 80 psi of boost and the head never lifted.
Features
- As you can imagine, there is a lot of room for improvement with so many moving parts inside the P7100. Larger diameter plungers and barrels, bigger delivery valves, quick-rate cams, different rack plugs and performance fuel plates are all available.
Purpose
- Moving the AFC housing all the way forward (toward the front of the truck), turning the star wheel beneath the AFC housing toward the passenger side of the engine, removing the fuel plate and disabling the turbochargers wastegate are all methods of adding horsepower. In fact, performing all of the above often results in a 100-hp gain, if not more.
Specifications
- Unlike todays electronically controlled, common-rail diesel injectors that can run upwards of $3,000 per set, performance injectors for a 12-valve typically range from $450 to $1,000 (give or take). One common injector comes from the 370-hp version of the 12-valve used in marine applications. Made by Bosch, the marine 370 injectors feature a 5-hole nozzle with 0.012-inch di…
Construction
- Looking to get more flow and reliability out of a competition 12-valve head, Hamilton Cams had completely new cylinder heads cast (pictured above), designed specifically to incorporate more meat around the ports (especially on the exhaust side). More material means more porting (material removed) is possible without sacrificing durability (cracking). Hamiltons top-of-the-lin…
Models
- Their 93 model year Cummins is graced with the coveted 215-hp variant of the P7100, a cam out of a 94 engine, an S475 BorgWarner turbo, a water-to-air intercooler and a custom header the Dows fabricated themselves. At the dragstrip, nitrous is added to the equation, which culminates in 1,100-rwhp and 9-second blasts through the 1320. The old Dodge gets its power to the groun…