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It Out!
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Well
now, you have your dream car body, parts costs, and online research complete.
You will want to re-bore the cylinders of the engine.
Let’s figure the new cubic inch capacity of your engine .
Formula
for Cubic Inch Engine Capacity
Bore
X Bore X Stroke X 3.1416 ÷ 4 X number of cylinders
The
“bore” is how wide your cylinder is. The
“stroke” is the length of the cylinder, or the distance the piston will
travel up and down.
Let’s
use a common engine size as an example: a 1979 V8-350 Chevy engine with 160
horsepower. The bore is 4.0 inches
and the stroke is 3.48. Using
these numbers, we get:
4.0
x 4.0 = 16 x 3.48 = 55.68 x 3.1416 =174.924 ÷ 4 = 43.731 x 8 = 349.8
(rounded up to 350) cubic inches
Ok…if
your new cylinder is…… what is your new cubic inch engine capacity?
| If
the bore is now:
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and
the stroke is:
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The new engine capacity
is:
|
| 3.875 |
3.53 |
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Change
the figures in different columns and work out the results.