INDUSTRIAL INJECTION PDM-LMLRH GM RACE HEADS FOR 11-16 LML 6.6L DURAMAX

The Industrial Injection LML Duramax Race Heads are designed for the racer / sled puller in mind. Fully CNC ported heads complete ready to bolt on.

Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon. Next they are checked by magnafluxing, (cast iron only) or pressure testing. They are visually inspected for defects that would make them unusable. Valve guides and seats are removed as needed for porting.

Port development is accomplished using a superflow 600 flow bench with a computer recording all flow measurements.

Many things are considered when designing a cylinder head Port; air flow is only one of the things to think about. Another major concern is port wall thickness.

Anyone can get a head to produce high flow numbers, but if doing so leaves the port wall to thin the casting will crack. High performance Diesel heads are more prone to crack because of the thermal shock experienced by excessive intermittent or long term exhaust temperatures.

The porting is then preformed using a new 5 Axis CNC Cylinder Head Porting Machine with CAD/CAM software specifically designed for cylinder head porting. CNC porting brings unparalleled accuracy to head porting with each port flowing the same. This helps balance the power that each cylinder produces, making tuning easier.

New High Strength Alloy, Heat Treated iron based valve guides are installed. These guides are heat treated to Rockwell 22 Scale, which produces the ultimate in wear resistance. This is far superior to original guide material, including Bronze. The guide incorporates a spiral grove inside the guide to hold oil and aid the lubrication of the valve during engine operation.

Guides are then honed (not reamed) to exact size using a diamond honing mandrel. Diamond abrasives allow for consistency of size, surface finish, and bore geometry with no variation from guide to guide. The guide size is then verified using a valve guide bore gauge.

As needed the head receives new Premium valve seat inserts made from a true Nickel Based Non-Magnetic material that was developed for extreme operating conditions.

Next the head is treated to a multi angle valve job to help maximize the flow of air in and out of the head. This is accomplished using a Serdi 100 guide and seat machine.

Serdi uses a solid carbide straight shank pilot. When inserted into the valve guide, it simulates the real valve stem during the centering process. This guarantees the valve seat is finished for a perfect valve to seat match.

Using CBN or Diamond tooling the head is given a new surface. With our berco milling machine we can control the surface finish to accommodate different head gasket types. For example MLS head gaskets require a very smooth surface finish.

Finally the head is jet washed dried and assembled with new valve seals and new performance valve springs.

Features:

• 5 Axis CNC Cylinder Head Porting Machine with CAD/CAM software specifically designed for cylinder head porting
• Diamond Honed Guides
• Unshrouded Valves
• High Strength Alloy, Heat Treated iron based valve guides
• Premium valve seat inserts made from a true Nickel Based Non-Magnetic material
• Multi angle valve job
• Performance 130LB valve springs
• Sold in a pair

Note: To receive full core credit we need a good, re-useable pair of cylinder heads. No cracks, warping, or excessive wear.

The INDUSTRIAL INJECTION PDM-LMLRH GM RACE HEADS for the 2011-2016 LML 6.0L Duramax are expertly engineered to elevate the performance of any racing or sled pulling diesel engine. Designed specifically with the high-performance enthusiast in mind, these race heads are fully CNC ported and ready for seamless installation, allowing you to unleash the full potential of your engine.

Each head undergoes a meticulous cleaning process, including high-pressure jet washing followed by glass bead blasting to eliminate carbon buildup. Rigorous testing protocols, such as magnafluxing and pressure testing, ensure that every head meets stringent quality standards. Following this, valve guides and seats are removed where necessary, enabling precise port development on a state-of-the-art Superflow 600 flow bench.

The precision porting process utilizes a cutting-edge 5 Axis CNC Cylinder Head Porting Machine, delivering unmatched accuracy and consistency across all ports. This not only optimizes airflow but also carefully considers port wall thickness to prevent cracking from thermal shock in high-stress conditions.

Incorporating new heat-treated, high-strength alloy valve guides and premium nickel-based valve seat inserts, these heads are built to withstand extreme operational demands. The addition of a multi-angle valve job is performed using advanced Serdi technology to ensure an ideal valve-to-seat fit, enhancing air movement in and out of the heads.

Complete with diamond-honed guides and 130LB performance valve springs, the INDUSTRIAL INJECTION race heads are your ideal companion for achieving exceptional race performance. Sold in pairs, they arrive fully assembled with fresh valve seals, ensuring that you're ready to dominate the track without delay.

Notably, to receive full core credit, it's essential to send back a good, reusable pair of cylinder heads free from cracks, warping, or excessive wear. Experience an unmatched drive with the INDUSTRIAL INJECTION PDM-LMLRH GM RACE HEADS, where innovation meets power.