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Username Post: understanding DCR (dynamic compression )
Valued Contributor
Posts: 4573
Loc: MO
Reg: 12-25-03
05-11-05 10:55 AM - Post#639789    
    In response to waterwalker

The higher the DCR, the higher the compression pressure should be, but there are also other factors like the condition of the engine and altitude at which the test was done. There are calculators which give cranking pressure along with DCR, but they differ significantly from each other (just like DCR calculators) depending on what duration intake closing point is used.

Here are a couple:

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