oversize piston

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karl

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Joined Mar 9, 2006

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403 Posts

Discussion starter · #1 · Aug 31, 2008

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i see 30 over 40 over and 60 over size pistons. why not 20 over or 50 over?

 

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d1_bradley

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Joined Sep 1, 1998

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3,409 Posts

#2 · Aug 31, 2008

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There have been 'other' sizes in the past and some are still available. Probably limited now by economics. The vendors look at sales and only mass produce the ones that sell the most. Lowers production costs and inventory. No reason to keep all those sizes in stock for a FEW sales. Just punch it out another .010 or .020 and use what's available. The labor cost is the same. In the rare case that you might have a need (very rare engine) you can have them made (get out the wallet). But think about it, with today's better materials and 200k mile engine life, two rebuilds SHOULD be enough.

 

G

Guest

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#3 · Sep 1, 2008

You can order whatever you want to buy.

pdq67

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Verle

· Premium Member

Joined Apr 19, 2004

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3,674 Posts

#4 · Sep 1, 2008

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Parts stores only carry a few sizes.

Engine rebuilders can get any size they want, so the sizes are available in cast pistons.

If you want custom sizes in forged or other pistons you may need to call the manufacturer. They will do it for a price.