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D-21 chassis versus engine s/n |
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 20107 |
![]() ![]() ![]() ![]() ![]() Posted: 22 May 2023 at 6:08pm |
Nebraska Test tractors: Series 1 D-21 chassis s/n 1012 (October 1963) and engine 3D-1046 with no turbo.......... Series 2 D-21 chassis s/n 2109 (June 1965) engine 3D- 2265 with turbo and eng oil cooler.
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AC7060IL ![]() Orange Level ![]() Joined: 19 Aug 2012 Location: central IL Points: 3316 |
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Great comparison of the two different 426s in similar D21 tractors (AC 3400 non-turbo versus AC 3500 turbo/oil cooled). Turbo/oil cooler added 24.47 hp while only 0.595 gal/hr fuel increase. 1963 AC 3400 produced 105.0 hp @ 2200rpm with 7.137 gal/hr fuel usage. 1965 AC 3500 produced 129.47 hp @ 2200rpm with 7.732 gal/hr fuel usage. Test 855 Test 904 http://digitalcommons.unl.edu/cgi/viewcontent.cgi?httpsredir=1&article=2329&context=tractormuseumlit |
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