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Old Dec 8, 2008 | 07:16 PM
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Default Cubic Inches...

on an LS2 honed out to a 4.005 bore. 366ci? Just curious.
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Old Dec 8, 2008 | 08:07 PM
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~365cid
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Old Dec 8, 2008 | 08:29 PM
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Cool. Thanks.
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Old Dec 8, 2008 | 09:19 PM
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Originally Posted by TheBiz
on an LS2 honed out to a 4.005 bore. 366ci? Just curious.
To calculate displacement easily:

bore x bore x stroke x .7854 x # cyl = displacement

4.005 x 4.005 x 3.622 x.7854 x 8 = ?

Hint: 7854 are the numbers in the upper left of a keypad run clockwise. On a phone pad they are in the lower left run counterclockwise.

Extra credit: where does the .7854 come from? (actually .785398163...)
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Old Dec 8, 2008 | 10:19 PM
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Also, you can do it by..

3.14(Pie) X (Half the Bore)^2 X Stroke X # of Cylinders = Displacement

3.14 X (4.005/2)^2 X 3.622 X 8 = ?
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Old Dec 8, 2008 | 10:26 PM
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Originally Posted by Old SStroker
To calculate displacement easily:

bore x bore x stroke x .7854 x # cyl = displacement

4.005 x 4.005 x 3.622 x.7854 x 8 = ?

Hint: 7854 are the numbers in the upper left of a keypad run clockwise. On a phone pad they are in the lower left run counterclockwise.

Extra credit: where does the .7854 come from? (actually .785398163...)
pi/4 , duh
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Old Dec 8, 2008 | 10:27 PM
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Originally Posted by Old SStroker
Extra credit: where does the .7854 come from? (actually .785398163...)
pi / 4

You took diameter squared instead of the radius so you made up for it by dividing the pi by 4
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Old Dec 8, 2008 | 11:44 PM
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Originally Posted by frito1
pi / 4

You took diameter squared instead of the radius so you made up for it by dividing the pi by 4
Yeah, my bore gages measure bore diameters easier than they measure bore radii. Others might use bore radius gages.

I guess that question was too easy for extra credit.

Where does 5252.113122... (usually just "5252") come from in the HP/torque/rpm equation? Why? You're on, LSGun.
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Old Dec 8, 2008 | 11:50 PM
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^^The coefficient for the blunt force trauma of a Chuck Norris Round House Kick.
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Old Dec 9, 2008 | 12:05 AM
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Originally Posted by the_merv
^^The coefficient for the blunt force trauma of a Chuck Norris Round House Kick.
Give this man extra credit even though it's wrong.

The answer was actually just on the History channel a few nights ago. It's more or less James Watt's conversion factor to change newtons, which at the time very few people knew about in the late 1700's, to horsepower, which back then everybody could relate to.
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Old Dec 9, 2008 | 07:17 AM
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Originally Posted by InchUp
Give this man extra credit even though it's wrong.

The answer was actually just on the History channel a few nights ago. It's more or less James Watt's conversion factor to change newtons, which at the time very few people knew about in the late 1700's, to horsepower, which back then everybody could relate to.
Nope, not quite.

It's not wise to imbibe whilst watching The History Channel.
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Old Dec 9, 2008 | 07:55 AM
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Originally Posted by the_merv
^^The coefficient for the blunt force trauma of a Chuck Norris Round House Kick.



Thats funny ****!

I knew I joined LS1....TECH for a reason, now.......


Back to Jeopardy:


What is.....
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Old Dec 9, 2008 | 09:12 AM
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radians
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Old Dec 9, 2008 | 11:15 AM
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Originally Posted by 99blancoSS
radians
^^^


Now you can 'splain it to the troops, 99.
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Old Dec 9, 2008 | 11:19 AM
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Originally Posted by Old SStroker
Extra credit: where does the .7854 come from? (actually .785398163...)
Pi/4 = .785398163...
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Old Dec 9, 2008 | 11:20 AM
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Originally Posted by Old SStroker
^^^


Now you can 'splain it to the troops, 99.
This guy already did

Originally Posted by the_merv
Also, you can do it by..

3.14(Pie) X (Half the Bore)^2 X Stroke X # of Cylinders = Displacement

3.14 X (4.005/2)^2 X 3.622 X 8 = ?
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Old Dec 9, 2008 | 11:36 AM
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What did I explain..lol

I mentioned Radius in my Formula..that is about the only thing that I can see..
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Old Dec 9, 2008 | 11:38 AM
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The answer is 42.
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Old Dec 9, 2008 | 11:51 AM
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Originally Posted by 99blancoSS
radians
Originally Posted by Old SStroker
^^^


Now you can 'splain it to the troops, 99.


Sorry guys, 99 was hinting at the answer to the "where does 5252.113122... come from in the hp/torque/rpm equation" question. I guess I better number them.

This one is a little tougher than PI/4, but we use it all the time. It's radians, not radius that 99 mentioned. That was not a typo.

We should not just accept "5252" on faith. Rather we should know from whence it comes. Well, at least IMO.
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Old Dec 9, 2008 | 12:12 PM
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All I care is that when I turn the Key it starts, hopefully the Hydraulics don't fail so I can put it in Gear, and then I can go.
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