Installed Height Calculator

Calculate optimal valve spring installed height

Spring Parameters

Spring Free Length (inches)

Spring Rate (lbs/inch)

Target Seat Pressure (lbs)

Current Installed Height (inches)

Ideal Installed Height

1.775"

Add 0.025" shim to increase pressure

Current Setup Analysis

Current Seat Pressure120.0 lbs

Pressure Difference+10.0 lbs

Compression Needed0.325"

Shim Adjustment+0.025"

Formula

Installed Height = Free Length - (Target Pressure ÷ Rate)