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CU> < IN Question
Posted:
Sun Feb 02, 2014 2:53 pmby kevin
Is a BD 240 .060 over bore = to a 257 CU. IN?
double checking.
THANKS,
kevin
Re: CU> < IN Question
Posted:
Sun Feb 02, 2014 4:21 pmby Buzzman72
Cubic inches = number of cylinders x bore x bore x stroke x .7854 ...right?
A stock BD240 has a 3-9/16" bore...which is 3.5625".
A stock BD240 has a 4-1/64" stroke...which is 4.015625".
A .060" overbore would be 3.5625" + .060", which = 3.6225"
Now, 6 cylinders x 3.6225" x 3.6225" x 4.015625" x .7854 = 248.32 cubic inches.
That's what MY calculator tells me.
Re: CU> < IN Question
Posted:
Sun Feb 02, 2014 5:56 pmby iroc409
Using the formula for volume of a cylinder and rounding pi to 3.14, I got 248.194--so I concur (with Buzzman)!
I've never seen the use of area^2 * .8 (.7854) for area of a circle until I joined the fire service.
Re: CU> < IN Question
Posted:
Sun Feb 02, 2014 6:18 pmby kevin
Thanks for the input guys, I went to some websites and that was the answer, because of my math skills are not very good. Thanks again.
kevin
Re: CU> < IN Question
Posted:
Sun Feb 02, 2014 6:58 pmby Ethan
Are you trying to increase horse power?
Re: CU> < IN Question
Posted:
Mon Feb 03, 2014 8:09 amby kevin
Ethan, I have a rebuilt .060 short block and was curious of the increase in CU-IN.