Racers have been polishing connecting rods for years to improve stock rods durability and to decrease weight. The benefit to polishing is that you remove the source of potential stress fractures.

All factory rods have ridges from the forging process that run the length of the beams. This is the weakest part of the rod and most likely the first place a crack will develop. Our high performance Cummins 5.9 rods start with the early tongue and groove rod core (not late model cracked rods) they are inspected for flaws, cleaned, and magnafluxed next the beams are ground, polished, and  shot-peened, new high performance rod bolts installed, resized, checked for straight and balanced. They can be used in the common rail engine to replace the cracked rods. (Cracked rods refers to connecting rods made using powder metallurgy, The cap is then separated from the rod by a fracturing process, which results in an uneven mating surface due to the grain of the powdered metal.) Sold in matched sets only. Core charge may apply. PRICE 1095.00 PER SET PLUS 300.00 CORE

Cylinder head porting on a diesel engine refers to the process of modifying the intake and exhaust ports to increase the amount of air going into the cylinder. Porting the heads provides the finely detailed attention required to bring the engine to the highest level of efficiency. It has been said that an internal combustion engine is nothing more than an air pump, and the more air it can pump, the more power it will make. Most often the guy who pays his bill without questioning it is the one who has already tried porting and has an idea of the work involved. Success at head porting does not happen overnight. It takes skill and practice. We offer over 30 years of head porting and air flow experience. We are asked all the time, does it help to port diesel heads when you can increase the boost? The answer is ABSOLUTELY. When you increase the boost, you put more air in the cylinder. When porting is done right, it will also put more air in the cylinder. Together you maximize the air flow and the horse power.

The purpose of the engine main bearing girdle is to increases block rigidity and tensional stiffness; it does this by tying all the main bearing caps and oil pan rail together. Our GORILLA GIRDLES are designed using the latest CAD software and machined using a CNC milling machine and lathe. Engines that use a main bearing girdle make more power, by decreasing friction in the main bearing bore and overall alignment of the piston and crankshaft bores. The main bearing girdle will strengthen and stabilize the bottom end of the cylinder block, evenly distributing the load across the main bearing caps, virtually eliminating main cap walk. This 14mm girdle is being used on engines producing well over 1500 H.P. The 14mm kit includes the girdle and all hardware needed for installation on the Cummins 12 – 24 valve 5.9 diesel engines. (This kit requires the use of our 14mm extra long stud kit.)

Options

Girdle kit only $500.00 Girdle kit with 14mm Extra long studs $930.00

The purpose of the engine main bearing girdle is to increases block rigidity and tensional stiffness; it does this by tying all the main bearing caps and oil pan rail together.

Our GORILLA GIRDLES are designed using the latest CAD software and machined using a CNC milling machine and lathe.
Engines that use a main bearing girdle make more power, by decreasing friction in the main bearing bore and overall alignment of the piston and crankshaft bores. The main bearing girdle will strengthen and stabilize the bottom end of the cylinder block, evenly distributing the load across the main bearing caps, virtually eliminating main cap walk. This 14mm girdle is being used on engines producing well over 1200 H.P.
The 14mm kit includes the girdle and all hardware needed for installation on the Cummins Common Rail 5.9 – 6.7 diesel engines. This kit requires the use of our 14mm extra long stud kit. (Not included, see studs)

Engines that run a girdle make more power and last longer.

Click Here
for Cummins Common Rail Girdle Installation instructions

Kit Includes Gorilla Girdle and All Mounting Hardware
Price Each 450.00 U.S. (requires the use of our 14mm extra long stud kit 430.00 u.s.)

Options

Girdle kit only $450.00 Girdle kit with 14mm Extra long studs $880.00

Dress up intake manifold cover  for Cummins

This Billet aluminum intake manifold cover is guaranteed to draw attention to your engine compartment. Choose one for your 12-24 valve or common rail 5.9 Cummins diesel engine. The intake cover is CNC  machined form 6061 aircraft quality aluminum. The ball milling on the underside is designed to increase surface area and will help absorb heat from the intake air. The ball milling on the top not only looks great but also increases surface area to dissipate heat. The ½ inch thick cover will help hold the gasket in place under the stress of high boost pressures found in modified and all out race engines. This kit includes 10 stainless steel allen head bolts.

195.00 U.S.