Skip to main content 

How altitude affects diesel engine performance - amp page

Altitude affects the performance of all engines, this page provides some insight as to how.

Inter Club Navigation

 Home Page   Membership   Contact Us      Club Matters   Engine List   Technical  Videos 

Click for: Cummins engine specs   Click for: CAT Diesel engine Specs   Click for: Detroit Diesel specs   Click for: ADE diesel engine specs-   Click for: Deutz diesel engine specs

Click to
Sign up
for full Membership
Become a Member
and have access to all the manuals and specs at Barrington Diesel Club

Altitude corrections for diesel engines - amp

Click for:
Other Diesel Engine
manuals and specs

Altitude corrections for diesel engines


Essentially, the higher one goes the thinner is the air. If you go high enough a carbureted engine stops working, that's at about 4000 meters or 12,000 feet. Any higher than that you'll need fuel injection. Try climbing a hill at that altitude, and most of us will be puffing and panting after 50 meters or so.
So too diesel engines lose power with altitude.

Rough altitude power corrections
Detroit NA 2-Stroke engines:

  • 2.5% Reduction in power per 1000 ft
  • 0.8% Reduction in power per 100 m
4-Cycle Naturally aspirated engines:
  • 3% loss in power per 1000 ft
  • 1% loss in power per 100 m
All turbocharged engines
  • 1.5% loss in power per 1000 ft
  • 0.5% loss in power per 100 m

 Membership - Sign Up  More about Membership  Login 
Home Page 
  Home - Desktop    Home - Mobile 
Engine List 
  Engine List - Desktop    Engine List - Mobile 
Club Matters
More About Us  Terms and Conditions  Acknowledgements  Site Map  Privacy Policy 

Page Revision #10.1RsC AMP 06-19