How To Install Arp Head Studs 6.0

DW STUDS Lead — It would exist a shame to drive a great-looking truck like this with a stock engine, then Anthony Reams turned to the experts at Fleece Performance Engineering for some upgrades.

Cylinder pressure in diesel is essentially what makes the ability. And there are several variables that pb to increased pressure, such as adding more fuel and boost. Toss in today's common runway injection sequences and manufacturing plant torque-to-yield caput bolts, and you can see why cranking upward the ability tin can pop a head gasket, or worse.

In addition to performance tuning, fuel organisation, intake and exhaust upgrades, if you ain a 6.7L Cummins a set of head studs should be on your "to-do" list. The ARP CA 625 caput studs are individually wrapped to protect them in transit and come with basics, washers and assembly lube.

1. & 2. To start the installation, Chase Fleece removes decorative trim panels and the multi-slice valve cover.

iii. This EGR tube too needs to be temporarily removed to make way for the stud installation.

4. Later disconnecting all of the fuel injector harness leads, Fleece removed the injector associates and set it aside.

five. & vi. Fleece adjacent unbolted and removed the rocker box assembly, earthworks farther into the height of the head.

7. & 8. Finally each pair of rocker arms was removed from the head along with the push rods and valve bridges. Be certain to set them down in society so that they can be reassembled in their original positions.

9. After removing two of the manufacturing plant head bolts at a fourth dimension, Fleece replaces them with the new caput studs from ARP. He uses an electric ratchet to run them into the block, but they're simply installed hand tight; information technology'due south not necessary to torque the studs into the block. Additionally, exist sure to install the six longer 6.625-inch studs in the locations along the exhaust manifold on the cylinder caput exterior of the valve cover.

Smart diesel owner/builders who plan on upping the power dues via more than fuel and boost typically utilise a set of head studs to ensure even clamping force between the cylinder caput, head gasket and block, too as reducing any hazard of head commodities "stretch" nether high-boost circumstances. Racers have been using head studs for years for their even clamping force, and more and more than owners of street-driven diesels, especially those with Cummins 5.9 and half dozen.7L motors, are installing head studs equally an insurance policy. And on the 6.7L, many builders attribute the larger pistons in the six.7L Cummins for upping cylinder pressures even more.

A simple and relatively piece of cake cure for head gasket failure prevention is to install a fix of head studs from a high-quality manufacturer like PureFlow/AirDog, whose Anthony Reams is in the process of building the ultimate shop truck. Reams wanted to provide some additional insurance for the head gasket in his 2022 Ram 2500 since he'd exist turning up the power with a whole host of aftermarket modifications.

Reams turned to the folks at Automotive Racing Products a.1000.a. ARP for a set of the top-of-the-line Custom Age 625 caput studs and then headed north to Brownsburg, Indiana, to Fleece Performance Engineering science for the installation. Since the head gasket was nevertheless good in Reams' truck, the folks at Fleece were able to swap out the stock caput bolts for the new head studs one at a time without removing the caput or replacing the head gasket.

On the other mitt, if the caput gasket is blown, or there'southward even the slightest inclination it may accept gotten injure in some high-heave runs, then further diagnostics may be necessary including the cylinder leak-downwardly test. A skillful rule of thumb is when in doubt, yank it out. High-mileage engines or ones with cylinder pressure level problems should have the cylinder head removed and checked, including decking, earlier installing a new head gasket. Think about studs as preventative medicine. They volition aid reduce the risk of bravado a caput gasket, merely won't necessarily cure a head gasket that has already blown.

ten, 11 and 12 ARP supplies two packets of their proprietary Ultra-Torque fastener assembly lubricant with each set of head studs. The lubricant allows the fasteners to be tightened to the proper torque value without binding and provides authentic torque measurement. Fleece applies Ultra-Torque to the faces of the washer and nut as well as the threads of the stud.

13. Fleece starts each nut by hand to make sure that the threads are properly engaged before running the nuts downwardly on the studs.

14. Before moving on to another pair of bolts and repeating the process, Fleece torques the nuts to 150 ft-lb in 3 equal steps as recommended by ARP. Exist certain to use a high-quality torque wrench so that you go authentic and consistent torque results.

15. After all of the head bolts are replaced with the ARP studs and properly torqued, Fleece reinstalls the push rods, valve bridges and rocker arms, and and then adjusts the valve lash setting at .010-inch on the intake and .020-inch on the exhaust valves.

xvi. And then he installed the rocker box and fuel injector harness, beingness careful non to over-tighten or cantankerous-thread the harness nuts on the fuel injectors.

17. Fleece installs the multi-piece valve embrace to complete the job.

ARP makes head studs for the Cummins engines in standard and Custom Historic period 625 materials. The standard studs are a great upgrade to replace factory head bolts and will handle being torqued tighter than the factory bolts, making them a good culling for budget-minded diesel enthusiasts who are non pushing the power limits likewise hard in daily-driver trucks. For those like Reams who plan to button the limits harder, information technology'south all-time to go ahead and spend more initially and become with the stronger CA 625 studs to brainstorm with since they can be torqued even higher than the standard studs to brand it even more difficult to lift the head and blow a gasket.

On a Cummins-equipped truck, the studs can be installed with the engine in the vehicle, but at that place'southward even so a adept amount of disassembly required to become far enough downwardly into the caput to replace the mill bolts with the new studs. It would be overnice if you could merely remove the valve cover and bandy the bolts for the studs, but unfortunately you need to dig downward deeper than that to even attain the caput bolts.

On the 6.7L truck the multi-piece valve cover assembly must be removed and you may even have to temporarily remove some parts of the emissions arrangement that interfere with access to the cylinder head. Then the fuel injector wiring harness must be removed forth with the rocker box and even the rocker arms themselves just to attain the head bolts. Without a uncertainty, installing head studs is a labor-intensive job that volition become some grease under your fingernails, but the resulting longevity and peace of mind when pushing the truck difficult are well worth it.

It took veteran diesel tech Chase Fleece nearly a full twenty-four hours to install the head studs along with the typical photographic slowdowns. If you programme to do the installation yourself, exist certain to prepare aside a long mean solar day or even a weekend to make sure that you're not rushed and are able to do the job right. If the installation seems to be at all beyond your capabilities have your local diesel performance shop perform the installation for you lot.

Follow along over the next few pages to run across an overview of the installation on Reams' Ram 2500. Diesel fuel performance experts like Chase Fleece and the team at Fleece Functioning Engineering recommend installing caput studs on your 6.7L Cummins whenever yous plan on pertformance upgrades and tunes to aid minimize the chance of bravado head gaskets. If yous practise it before y'all have problems it really is cheap insurance compared to the downtime and expense you will pay to repair a blown caput gasket.

Installing head studs is non a guarantee that you volition never blow a head gasket, but it sure makes it less probable that yous will blow a head gasket when properly installed and torqued. Remember that installing head studs won't help your truck brand more power, just they will help continue the ability that y'all make inside the combustion sleeping accommodation where it belongs! DW

SOURCES:

Automotive Racing Products (ARP)
Dept. DW
1863 Eastman Avenue
Ventura, CA 93003
800-826-3045
www.arp-bolts.com

Fleece Functioning Engineering
Dept. DW
468 Southpoint Circle
Brownsburg, IN 46112
855-839-5040
www.fleeceperformance.com