Diamond 30421-R1 Ford 4.6L 4V Competition Series Piston / Ring Kit -11.5cc Dish, 3.552" Bore
|Application||Ford Modular 4.6L 4V|
|Valve Reliefs||4V Valve Reliefs - Will fit +1mm Valves|
|Valve Relief Depths||.151" Intake / .050" Exhaust|
|Compression Ratio - 52cc||9.1:1 Compression using 3.620" x .036" Gasket|
|Ring Land Spacing||.280" x .180" x .080"|
|Included Wrist Pin||Trend G8662500180C|
|Wrist Pin Material||8620 Alloy|
|Wrist Pin Dimension||.866" x 2.500" x .180" Wall - 123g|
|Optional Wrist Pin Upgrade||Trend H8662500200C|
|Optional Wrist Pin Material||H-13 Tool Steel|
|Optional Wrist Pin Dimesions||.866" x 2.500" x .200" Wall - 132g|
|Ring Stack||1.2mm x 1.5mm x 3mm|
|Included Piston Ring Set||09403552|
|Included Piston Ring Details||Gas Nitrided Steel Top, Napier 2nd, 3 Piece Oil|
The Diamond 4.6L Competition Series Pistons are designed for moderate to high horsepower forced induction applications and are a great choice for Street / Strip applications up to 1400 HP. These Pistons come with Trend .180" Wall 8620 Wrist Pins, Moly Skirt Coating and a Steel Top, Napier 2nd Ring set. We recommend upgrading to the H-13 Pins around the 900 HP mark. The 8260 Pins will not break, but they will begin to flex at some point and are not as rigid as the H-13 heavier wall pins. We recommend this for the simple fact that wrist pin flex will wear out both the Pin Bore and the Connecting Rod Bushing.
- H-13 Tool Steel Pins
- Lateral Gas Ports
- Ceramic Dome Coating
- Item Requires Shipping
- 16.0 lbs.
- W28.0000” x H6.0000” x L12.0000”
- Free Shipping!
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