Calculated Industries 8703 User Manual
Page 49
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KEYSTROKES DISPLAY
0.
1. Enter the values from the example:
BORE S 4. IN
STROK S 3.48 IN
(Gasket Bore)
G-BOR S 4.1 IN
(Gasket Thickness)
G-THK S 0.038 IN
(Deck Height)
DECK S 0.015 IN
(Dome Volume)
DOME S 4.5 VOL CC
(Chamber Volume)
CHMBR S 76 VOL CC
2. Calculate the Compression Ratio:
COMP 8.805 RATIO
Repeated presses of
will toggle through the inputs and outputs,
starting with the entered Bore.
The calculated compression ratio is about 8.81:1. At this point, if
you were not satisfied with this ratio, you can use your Hot Rod
Calc to play out some other scenarios.
For this example, to raise your compression ratio, you could enter
a thinner Head Gasket Thickness of 0.015. All the other inputs are
in your calculator’s memory.
KEYSTROKES DISPLAY
3. Change the Gasket Thickness by entering .015 inches:
G-THK S 0.015 IN
4. Re-calculate the Compression Ratio:
COMP 9.253 RATIO
Notice the increase in the calculated compression ratio. In
summary, lowering the overall chamber volume will increase the