Reaching out for some ideas for a rod and piston setups.. What is the difference between a flat piston and a dished piston? Trying to re-enforce the internals for future add-ons!! 
03Mach1NNVA
Mach 1 Rod and piston setup
Reaching out for some ideas for a rod and piston setups.. What is the difference between a flat piston and a dished piston? Trying to re-enforce the internals for future add-ons!!
Flat tops result in a higher compression ratio. 03/04 Mach 1's have flat top pistons and a 10.1:1 ratio. 1999 and 2001 Cobras have almost identical engines as the Machs but their pistons have a small dish, resulting in a 9.85:1 ratio. What's your ultimate goal? Natural aspiration or forced induction? If N/A, stay with the flat tops. If F/I, consider dished to allow for higher boost. In either scenario, go with a good forged piston and rod.
Id get the pistons notched incase you run some big cams so you wont have to worry about PTV. But, what are your goals? NA/Nitrous? Or Blower/Turbo?
Doing some research now and have a few questions for you folks.
Hypereutectic Vs Forged?? My understand that the Hypereutectic are "like" factory spec pistons??
Summit racing has an arrange of different piston setups. Has anyone used Probe pistons before? Open to any suggestions...
Thank you,
Hypereutectic Vs Forged?? My understand that the Hypereutectic are "like" factory spec pistons??
Summit racing has an arrange of different piston setups. Has anyone used Probe pistons before? Open to any suggestions...
Thank you,
From wikipedia:
"A hypereutectic piston is an internal combustion engine piston cast using a hypereutectic 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. Hypereutectic aluminum has a lower coefficient of thermal expansion, which allows engine designers to specify much tighter tolerances.
The most common material used for automotive pistons is aluminum due to its light weight, low cost, and acceptable strength. Although other elements may be present in smaller amounts, the alloying element of concern in aluminum for pistons is silicon. The point at which silicon is fully and exactly soluble in aluminum at operating temperatures is around 12%. Either more or less silicon than this will result in two separate phases in the solidified crystal structure of the metal. This is very common. When significantly more silicon is added to the aluminum than 12%, the properties of the aluminum change in a way that is useful for the purposes of pistons for combustion engines. However, at a blend of 25% silicon there is a significant reduction of strength in the metal, so hypereutectic pistons commonly use a level of silicon between 16% and 19%. Special moulds, casting, and cooling techniques are required to obtain uniformly dispersed silicon particles throughout the piston material.
Hypereutectic pistons are stronger than more common cast aluminum pistons and used in many high performance applications. They are not as strong as forged pistons, but are much lower cost due to being cast."
Since you're planning on going F/I, spend the extra to get forged pistons and rods.
"A hypereutectic piston is an internal combustion engine piston cast using a hypereutectic 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. Hypereutectic aluminum has a lower coefficient of thermal expansion, which allows engine designers to specify much tighter tolerances.
The most common material used for automotive pistons is aluminum due to its light weight, low cost, and acceptable strength. Although other elements may be present in smaller amounts, the alloying element of concern in aluminum for pistons is silicon. The point at which silicon is fully and exactly soluble in aluminum at operating temperatures is around 12%. Either more or less silicon than this will result in two separate phases in the solidified crystal structure of the metal. This is very common. When significantly more silicon is added to the aluminum than 12%, the properties of the aluminum change in a way that is useful for the purposes of pistons for combustion engines. However, at a blend of 25% silicon there is a significant reduction of strength in the metal, so hypereutectic pistons commonly use a level of silicon between 16% and 19%. Special moulds, casting, and cooling techniques are required to obtain uniformly dispersed silicon particles throughout the piston material.
Hypereutectic pistons are stronger than more common cast aluminum pistons and used in many high performance applications. They are not as strong as forged pistons, but are much lower cost due to being cast."
Since you're planning on going F/I, spend the extra to get forged pistons and rods.
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