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forged pistons?


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You can run any piston you want. Should have it honed/bored to the specific needs of that piston though.

 

Forged is lighter and will let the engine rev faster though. Never go back to cast

 

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Edited by Lowroll
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If you were running cast before and are just going to hone because the bore is still true then you will have to run the same size cast Pistons. If you want to go to forged you will have to have it bored. Are the old Pistons worn out? May get by with just new rings.

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Not sure havent checked them yet. Whats the sence of wiseco selling std pistons if they still have to be bored? Do you just have to have it honed bored to meet piston tolerance if you buy standard forged pistons?

Cast and forged pistons expand once hot. However they expand differently so the bore needs to be established with those needed tolerances in mind.
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You will be shooting blanks unless you learn what the bore size really is, via measuring it.  If there is out-of-round (eccentricity) or taper out of spec, it will need bored but you won't know that without measuring. 

 

As far as cast vs forged, I could go at it all day but cast is just fine for mild engines.  The higher silica makes them harder and less prone to wear.  ie, they last longer. 

 

 

Brandon

Mull Engineering

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