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post #1 of (permalink) Old 07-04-2001, 07:17 PM Thread Starter
 
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Determining the overbore on a rebuilt

How do I determine how much (if any) an engine was overbored during a rebuild by someone else? The engines a rebuilt and needs a set of rings in one cylinder. Could I take the piston to a machine shop and have them put the micrometers on the piston? Or is stamped somewhere, like inside the piston skirt?

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Brett

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post #2 of (permalink) Old 07-04-2001, 07:25 PM
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Re: Determining the overbore on a rebuilt

it's stamped on top

post #3 of (permalink) Old 07-04-2001, 07:26 PM
 
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Re: Determining the overbore on a rebuilt

In most cases it's stamped or cast onto the top of each piston along with the arrow pointing to the front. You certainly could measure the piston as well. Typical overbore is plus 0.030.

tim

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post #4 of (permalink) Old 07-04-2001, 08:12 PM
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Re: Determining the overbore on a rebuilt

You could get a micrometer and measure the cyclinder?

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post #5 of (permalink) Old 07-04-2001, 09:08 PM
 
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Re: Determining the overbore on a rebuilt

if the pistons arent stamped 0.030 or 0.060 then its probably standard bore

you can also remove a crank bearing cap and the back of the shell will be stamped with any oversize information.

be aware though, some amc engines from teh factory had turned cranks 0.010, or even oversized bores, these are discernable from teh engine build id tag on teh valve cover if still there



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