Calculate Compression Ratio
Part number:
CCR
Description:
Add your Head cc to your Deck cc & 1 cylinder volume cc together
divide the end result by the figure reached when adding your Head cc & Deck cc
Example -
cylinder volume example= 69mm X 90.5mm engine size = 1775/ 4 = 443.75cc
deck volume example= .060" Deck = 9.80cc
combustion chamber volume example= Head = 50.00cc
503.55cc divided by 59.80cc = 8.42:1
NOTE: if you're using cylinder head spacers, add that volume to the combustion chamber volume calculation - example a .060 thick spacer is again, 9.80cc in this example.
443.75
9.80
9.80
50.00
______
513.35 divided by 69.70 = 7.365:1 CR
notice we show information from several sources to try to help everyone's needs
divide the end result by the figure reached when adding your Head cc & Deck cc
Example -
cylinder volume example= 69mm X 90.5mm engine size = 1775/ 4 = 443.75cc
deck volume example= .060" Deck = 9.80cc
combustion chamber volume example= Head = 50.00cc
503.55cc divided by 59.80cc = 8.42:1
NOTE: if you're using cylinder head spacers, add that volume to the combustion chamber volume calculation - example a .060 thick spacer is again, 9.80cc in this example.
443.75
9.80
9.80
50.00
______
513.35 divided by 69.70 = 7.365:1 CR
notice we show information from several sources to try to help everyone's needs
We accept the following forms of payment:
