Eagle H Beam Rods for:
1990-1993 Mazda Miata 1.6L B6 Engines
Piston Part # P4-MA790-N1 -- 79mm Bore (1mm Oversize) -- 10.6:1 Compression
Stroke -- 83.50mm | Comp Height -- 1.260" | Pin Diameter -- 20mm | Weight - 258 Grams | -1cc Dish
Rod Part # CRS5233M3D -- 535 Grams
You will receive a complete set of (4) Connecting Rods, Pistons, Rings, Wrist Pins and Locks for the application listed
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Supertech Pistons are manufactured in Argentina with technology transferred from European manufacturers.
Our pistons are manufactured from extruded high silicon, enhanced 4032 alloy (with additional Cu, Ni & Mg) that has low thermal expansion, excellent wear resistance and higher thermal conductivity. Our pistons with this alloy have withstood up to 42psi of turbo boost, with alcohol, without any problems.
A 2 or 3 step forging process yields a fine structural grain oriented fibers in the same direction of the stresses.
Several heat treatments provide the piston with a high tensile strength and evenly distributed hardness. The pistons are submitted to several machining steps in specially designed machines and in conventional CNC machines with special diamond tools for dimensional precision, perpendicularity and flatness of the ring grooves. Contact reduction grooves are standard. Honed & reamed pin bores for precise fit.
Wrist pins are constructed of cold extruded chrome moly steel for high strength to be used with wire clip locks.
Eagle Rods
All Eagle "ESP" Connecting Rods are manufactured from a TWO-PIECE FORGING. The forging process forces the grain into the shape of a connecting rod, resulting in a superior fatigue life. The rod cap is forged separately so that the grain runs perpendicular to the load forces, which strengthens the connecting rod. Many aftermarket connecting rods are manufactured from 4340 steel. 4340 specs allow a range of different materials to achieve the desired results. Although it is a more expensive process, all Eagle "ESP" 3-D connecting rods also include higher content of nickel & chrome, which increases the strength & fatigue life without making the connecting rod brittle.
Extensive testing has proven Eagle's two-piece forging superior to any one-piece forging on the market! All Eagle "ESP" Rods are clearly identified. Proper rod bolt torque is vital to connecting rod life. A rod bolt fastener is without question the highest stressed fastener in the engine. The big end bore of the connecting rod is a stressed bore in much the same way as cylinders are on a block. It is equally important to torque properly to provide proper strength & to insure the big end of the rod sizing is correct. Improper torque will result in premature rod failure! |
Please ask any questions you may have. We are always here to help and respond to inquiries in a quick, timely manner. Be sure to check out our other great items, we do combine shipping costs. (one shipping cost based on total package weight)
