Wiseco 1400HD ZRP forged pistons for VW 1.8L Turbo 20v Bore - 82.5mm 8.8:1 92.80 Stroker 21mm pin

ZRP, in collaboration with Wiseco, has created a new and exclusive series of pistons manufactured in the USA using 2618 alloy. These pistons share many advanced features with the Wiseco HD1400 series for extremely high-horsepower setups.

They include upgraded wrist pins with a 5.34 mm wall thickness and Armor Plating to reduce the negative effects of intense heat in turbocharged and nitrous/methanol setups. Each ZRP piston for this application incorporates an ArmorGlide anti-friction coating on the skirt to minimize wear during break-in and reduce friction on the cylinder wall. Our pistons are made using proprietary forgings, providing a lightweight piston with superior strength and an optimal design. Additionally, the valve pockets are larger and deeper than those of the original pistons to accommodate high-lift camshafts. Likewise, the pistons feature offset wrist pins and anti-detonation and gas-pressure grooves to extend ring life.

What is Armor Plating?

The Armor Plating coating gives them a bronze tone on the top and the wrist pin bore. This abrasion-resistant coating increases the hardness of the aluminum, improves the durability of the ring grooves, prevents piston ring micro-welding, reduces carbon buildup, and fights detonation corrosion. Additionally, Armor Plating reduces the piston head temperature by an average of 20 °C.

What is the ArmorGlide anti-friction coating for the piston skirt?

The ArmorGlide coating for the piston skirt is made of a molybdenum solid-film lubricant and is permanently bonded to the pistons. One of its main features is scuff resistance and friction reduction, which ensures quiet operation. Of course, piston slap and noise are reduced, and horsepower is increased.
Additional Information

Application

1.8L 20VT

Bore

82.50 mm

Thickness

1.20 mm

Notes

Compatible with reinforced connecting rods R-AUD-006-I (144×21)

Length (cc)

144.00

Set of

4

Stroke

81.50 mm

Weight

315 g

Compression Ratio

8.8:1

OEM Compression Ratio

9.5:1

Compression Height

29.50 mm

Pin Diameter

21.00 mm

Deck Clearance

-0.10

Dome/Dish (CCS)

-10.59 cc

Ring Set

21-GNH8150

Wrist Pin Part Number

H8272500235JC

Piston Material

Low-silicon, high-expansion 2618 alloy