Compression Test Altitude Correction Factors

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Joined: Thu Jul 19, 2007 2:46 pm
Location: Albuquerque, NM

Compression Test Altitude Correction Factors

Post by Albuquralque » Thu Jul 13, 2017 9:47 pm

When performing engine cylinder compression tests, your readings will get lower the higher in altitude you go. Here is a chart to show the correction factor.

Altitude Factor
1000' .9711
2000' .9428
3000' .9151
4000' .8881
5000' .8617
6000' .8359
7000' .8106
8000' .7860
"Put a little gravel in your travel"

Darrell - Albuquralque
2014 Patrol - Babe the Blue Ox
EFI Map OR 1.02
Throttle Body Vacuum Ports
K&N Air Filter
Raceway 2-into-1 Header (Right Side)
Previous Urals Owned: 2004 Wolf, 2006 Tourist, 2006 Patrol (TOW), 2006 Patrol (TOM)

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