HOwdy back Doug:
A hypereutectic alloy piston for a 200 is not currently available, to the best of my knowledge, as a stock replacement. The closest thing I can find is a Silvolite#H1482. The "H" indicates it is Hypereutectic. It is for a Chevy 305 V8. The standard bore size is 3.736", which would require and overbore of .056" to fit into a 200/250 application. That's pushing the limit, in my opinion. They are listed with a compression height of 1.54" as compared to a stock 1.5" for a Ford spec piston. That doesn't trouble me too much as I would have the top milled to create a dish that mirrors the combustion chamber. It would also eliminate the deck height without having to deck the top of the block, other then to level- to retain strength and rigidity.
A last difference is the pin diameter of .9273" as opposed to .9122" for Ford. Rebushing the small end of the rod would not be a problem for a good machinist.
The plus is that a set of six of these, properly machined and coated would still cost less then a custom built set of forged pistons.
Mike's offer of a special deal on a forged set of pistons he has on his shelf may change all of this rationale.
Waiting to hear from you.
Adios, David
A hypereutectic alloy piston for a 200 is not currently available, to the best of my knowledge, as a stock replacement. The closest thing I can find is a Silvolite#H1482. The "H" indicates it is Hypereutectic. It is for a Chevy 305 V8. The standard bore size is 3.736", which would require and overbore of .056" to fit into a 200/250 application. That's pushing the limit, in my opinion. They are listed with a compression height of 1.54" as compared to a stock 1.5" for a Ford spec piston. That doesn't trouble me too much as I would have the top milled to create a dish that mirrors the combustion chamber. It would also eliminate the deck height without having to deck the top of the block, other then to level- to retain strength and rigidity.
A last difference is the pin diameter of .9273" as opposed to .9122" for Ford. Rebushing the small end of the rod would not be a problem for a good machinist.
The plus is that a set of six of these, properly machined and coated would still cost less then a custom built set of forged pistons.
Mike's offer of a special deal on a forged set of pistons he has on his shelf may change all of this rationale.
Waiting to hear from you.
Adios, David
