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  #16 (permalink)  
Old 04-10-2010, 09:04 AM
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Quote:
Originally Posted by The Factory Man
Do you really think that there is enough cast iron between the cylinders that would allow you to do that? It has been a while since I have seen an Olds 403 engine block so I am going from memory but I still don't think you could go that big on the over-bore. Maybe someone with current machine shop experience will comment.
Cut me some slack!

Nice of you to completely edit your post, but you forget that the email notifier sends your reply to this thread to me as soon as you post it.

Did you lose track of the fact that this guy had 9 replies to his post before I pointed out the error of his having an over-bore of .24?

I am attempting to keep this thread "lite" until he discovers his error, and I don't especially feel the need to drag his butt over the coals for it.

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  #17 (permalink)  
Old 04-10-2010, 01:49 PM
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I see this type of error all the time on not only this forum, but every other one I visit as well. Maybe if we detail this problem a little, we can keep others from making it....
This is half a thousandth...0.0005"
This is one thousandth...0.001"
This is one and a half thousandths...0.0015"
This is two thousandths...0.002"
This is two and a half thousandths...0.0025"
This is thirty thousandths...as in "I bored the motor thirty thousandths"...0.030"...This is also thirty thousandths...0.03"
This is three hundred thousandths...as in "I bored the motor three hundred thousandths"...0.300"...or as in the case of this particular thread..."I bored the motor Two hundred and forty thousandths oversize...0.240"

While it is entirely possible to bore an aftermarket block two hundred and forty thousandths oversize, you would never get away with it in a factory production block. You'd run into the water jackets way before that. So, we're pretty sure the OP is saying that he bored the block twenty four thousandths...0.024"...

Last edited by techinspector1; 04-10-2010 at 10:32 PM.
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  #18 (permalink)  
Old 04-10-2010, 04:09 PM
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Quote:
Originally Posted by techinspector1
I see this type of error all the time on not only this forum, but every other one I visit as well. Maybe if we detail this problem a little, we can keep others from making it....
This is one thousandth...0.001"
This is one and a half thousandths...0.0015"
This is two thousandths...0.002"
This is two and a half thousandths...0.0025"
This is thirty thousandths...as in "I bored the motor thirty thousandths"...0.030"
This is three hundred thousandths...as in "I bored the motor three hundred thousandths"...0.300"...or as in the case of this particular thread..."I bored the motor Two hundred and forty thousandths oversize...0.240"

While it is entirely possible to bore an aftermarket block two hundred and forty thousandths oversize, you would never get away with it in a factory production block. You'd run into the water jackets way before that. So, we're pretty sure the OP is saying that he bored the block twenty four thousandths...0.024"...
I agree and I hope others read this post so they will sound like they know what they are talking about!!!
0.0015 can also be read as fifteen ten thousandths.
0.0025 can also be read as twenty five ten thousandths. Now watch everyone get confused!!!
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