Supertech Performance Piston Kit; For Turbo/Nitrous Applications; For use w/ Ring Set GNH7850 MAZDA MIATA


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Part #: P4-MA785-N10
Notes: Piston Kit
For Turbo/Nitrous Applications
For use w/ Ring Set GNH7850
MSRP: $593.78
Your Price: $116.35
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Specs

Bore 78.50mm[0.5mm+ Oversized]
Comp Height 1.260"(32mm)
Comp Ratio 8.8:1
Dome/Dish Volume CCs -11
Pin Diameter 20mm (.787")
Pin Weight 73.4grams
Piston Weight 353grams
Rod Length 5.228"
Skirt Style Round
Stroke 3.287"

This Item Also Available In

Part Number Price Notes & Specs
P4-MA790-N1 $131.37 Notes Piston Kit
For Turbo/Nitrous Applications
For use w/ Ring Set GNH7900
Bore 79.00mm[1mm+ Oversized]
Comp Height 1.260"(32mm)
Comp Ratio 10.6:1
Dome/Dish Volume CCs -1
Pin Diameter 20mm (.787")
Pin Weight 73.4grams
Piston Weight 258grams
Rod Length 5.228"
Skirt Style Round
Stroke 3.287"
P4-MA790-N10 $120.37 Notes Piston Kit
For Turbo/Nitrous Applications
For use w/ Ring Set GNH7900
Bore 79.00mm[1mm+ Oversized]
Comp Height 1.260"(32mm)
Comp Ratio 8.8:1
Dome/Dish Volume CCs -11
Pin Diameter 20mm (.787")
Pin Weight 73.4grams
Piston Weight 260grams
Rod Length 5.228"
Skirt Style Round
Stroke 3.287"

All Fitments

MAZDA
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1990 - 1993 MIATA ALL ALL ALL ALL ALL ALL

Product Description

Supertech Pistons are manufactured from extruded high silicone, enhanced 4032 alloy (with additional Cu, Ni & Mg) that had low thermal expansion, excellent wear resistance and higher thermal conductivity. Supertech Pistons, with this alloy, have withstood up to 42psi of boost, with alcohol, without any problems.

A two or three step forging process yields a fine structural grain which are then submitted to several machining steps in state of the art CNC machines.

Several heat treatments provide the piston with high tensile strength and evenly distributed hardness.

Contact reduction grooves are standard, and pin bores are honed and reamed for precise fit. Wrist pins are constructed of cold extruded chrome moly steel for high strength and used with wire clip locks.

Finally, the pistons receive a ‘phosphate dry lubricant’ coating to protect the rings against ‘micro-welding’ and enhance lubrication on the skirt/cylinder area.

Compression ratios are computed with .030” head gasket and .010” deck unless indicated in each case.

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