186+040" Flat Top Piston & Moly Ring Set 6 Cyl Red Motor [Holden Hr-Hk-Ht-Hg]

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Seller: early-holdens ✉️ (14,444) 99.9%, Location: Sydney, NSW, AU, Ships to: AU, NZ, Item: 162278694963 186+040" FLAT TOP PISTON & MOLY RING SET 6 CYL RED MOTOR [HOLDEN HR-HK-HT-HG].

186+040" SILVOLITE PERFORMANCE HYPEREUTECTIC FLAT TOP PISTONS & HASTING MOLY RINGS HOLDEN 6 CYLINDER 179 & 186 RED MOTOR

08/1963-1971 HOLDEN [EH-HD-HR-HK-HT-HG SERIES] 08/1970-1972 HOLDEN [LC TORANA GTR-XU1]

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 High Performance Flat 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: 3.625" / 92.075mm Size: +0.040" / 1.00mm Head Type: FLAT TOP Piston Type: CAST HYPEREUTECTIC Stroke: 3.000" / 76.20mm Length: 2.820" Compression Height: 1.780" Pin Size: 0.866" x 2.475" Pin Type: PRESS FIT Top Ring Width: 5/64" 2nd Ring Width: 5/64" Oil Ring Width: 3/16"

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: 3.665" ENGINE BLOCK BORE SIZE (3.625" +0.040")

MADE IN USA & MEXICO

179ci (2934cc) RED
08/1963-1966 HOLDEN [EH-HD SERIES]
 
186ci (3048cc) RED
04/1966-1971 HOLDEN [HR-HK-HT-HG]
08/1970-1972 HOLDEN [LC TORANA GTR-XU1]
  • Condition: Brand New
  • Product: FLAT TOP PISTONS, MOLY PISTON RINGS & GUDGEON PINS
  • Compatible Engines: HOLDEN 6 CYLINDER 179 & 186 RED MOTOR
  • Piston Type: CAST HYPEREUTECTIC
  • Manufacturer Part Number: 6MKRY3000-040
  • Modified Item: No
  • Custom Bundle: No
  • Brand: Silvolite & Hastings
  • Compression Height: 1.780"
  • Length: 2.820"
  • Bore Size: 3.6650" (3.6250" + 0.40")
  • Stroke: 3.000"
  • Non-Domestic Product: No
  • Manufacturer Warranty: 1 Year

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