SILVOLITE 304+0.040" DISH TOP PISTONS & HASTING MOLY RINGS [HOLDEN V8 304 INJECTED 5.0L MOTOR]

304+0.040" SILVOLITE PERFORMANCE HYPEREUTECTIC DISH TOP PISTONS &
HASTINGS MOLY PISTON RING SET
HOLDEN V8 304 INJECTED 5.0L MOTOR

03/1989-05/1999 HOLDEN [VN-VP-VR-VS-VT COMMODORE]
03/1990-04/1999 HOLDEN [VQ-VR-VS STATESMAN/CAPRICE]
09/1990-2000 HOLDEN [VG-VP-VR-VS UTE]

Hypereutectic pistons are cast using hyper eutectic alloy, that is a metallic alloy which has a composition beyond the eutectic point. Hypereutectic pistons are made of an aluminum alloy which has much more silicon present than is soluble in aluminum at the operating temperature.

By adding silicon to the piston's alloy, the piston expansion is dramatically reduced to specify reduced clearance between the piston and the cylinder wall. Silicon itself expands less than aluminium. Another benefit of adding silicon is that the piston becomes harder and is less susceptible to scuffing which can occur when a soft aluminum piston is cold-revved in a relatively dry cylinder on start-up or during abnormally high operating temperatures.

The Performance Dish Top Hypereutectic Pistons, Moly Piston Rings and Gudgeon Pins are made to the highest standard and exceed original manufacturers specifications for longevity, smooth operation and maximum performance.

SPECIFICATIONS:
Standard Bore Size: 4.000" / 101.60mm
Size: +0.040" / 1.00mm
Head Type: DISH TOP (10.6cc)
Piston Type: CAST HYPEREUTECTIC
Length: 2.930"
Compression Height: 1.719" - 0.118"
Pin Size: 0.9272" x 2.747"
Pin Type: PRESS FIT
Top Ring Width: 1.50mm
2nd Ring Width: 1.50mm
Oil Ring Width: 4.00mm

The pistons are manufactured in America (Mexico) by Silvolite, which had being making pistons since 1922. The moly piston rings are manufactured in the United States of America by Hastings leaders in Piston Ring technologies and have been in business for over a hundred years.

SPECIAL NOTE:
4.040" ENGINE BLOCK BORE SIZE (4.000" +0.040")

MADE IN USA & MEXICO