Bigdog Posted April 18, 2020 Share Posted April 18, 2020 Just had my 22r rebuilt in 21' Sunrader. Rings, valves, bearings, head, timing chain, oil and water pumps etc etc. checked mileage after 75 miles city highway mix 8mpg wtf? Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted April 18, 2020 Share Posted April 18, 2020 Does it feel like it's running normal? Quote Link to comment Share on other sites More sharing options...
Maineah Posted April 18, 2020 Share Posted April 18, 2020 Full rebuild? Give it a couple of months. Quote Link to comment Share on other sites More sharing options...
cjac Posted April 18, 2020 Share Posted April 18, 2020 What mpg where you getting before the rebuild? Quote Link to comment Share on other sites More sharing options...
WME Posted April 18, 2020 Share Posted April 18, 2020 Need 1000mi to seat the rings on an old school rebuild. Change the oil at 250mi and 1000mi, then go to your normal interval. Quote Link to comment Share on other sites More sharing options...
jjrbus Posted April 19, 2020 Share Posted April 19, 2020 Checked mpg after 75 miles, how? Quote Link to comment Share on other sites More sharing options...
Bigdog Posted April 19, 2020 Author Share Posted April 19, 2020 21 hours ago, Odyssey 4x4 said: Does it feel like it's running normal? definitely feels stronger especially on hills higher idle rpm, filled gas tank then drove 75 mixed miles filled again divided miles by gallons used had been getting 13 mpg mixed with 174,000 miles on weak climbing engine, observed work being done by highly rated mechanic in Pasadena,CA only thing i didn't get any break in instructions? Quote Link to comment Share on other sites More sharing options...
Derek up North Posted April 19, 2020 Share Posted April 19, 2020 Take your pick(s). https://www.google.com/search?client=firefox-b-d&sxsrf=ALeKk03b7SIMkBFnz62PRbUDY8zmEITS4g%3A1587325577481&ei=iaqcXtrsHLirytMPjJulgA8&q=engine+break+in+instructions+22re&oq=engine+break+in+instructions+22re&gs_lcp=CgZwc3ktYWIQDDoECAAQRzoGCAAQFhAeOggIIRAWEB0QHlD7qAFY2c8BYPbrAWgAcAJ4AIABvwOIAdkHkgEHMC40LjQtMZgBAKABAaoBB2d3cy13aXo&sclient=psy-ab&ved=0ahUKEwia1cDJoPXoAhW4lXIEHYxNCfAQ4dUDCAs Quote Link to comment Share on other sites More sharing options...
WME Posted April 19, 2020 Share Posted April 19, 2020 (edited) Because of the engines and the available parts age and designs this will be "old School". You already have run the truck for 75 mi so the normal cam break in period is null. Under 3500 rpm, 25 mph, 40mph, 60mph. DO NOT lug the engine. DO NOT run at a constant RPM. Slightly speed up and down with a full deceleration every few min for 100mi. Then longer periods until 1000 mi are up. Then sneak up on normal speeds. Oil change at 250 and 1000 miles Edited April 19, 2020 by WME Quote Link to comment Share on other sites More sharing options...
Maineah Posted April 19, 2020 Share Posted April 19, 2020 3 hours ago, Bigdog said: definitely feels stronger especially on hills higher idle rpm, filled gas tank then drove 75 mixed miles filled again divided miles by gallons used had been getting 13 mpg mixed with 174,000 miles on weak climbing engine, observed work being done by highly rated mechanic in Pasadena,CA only thing i didn't get any break in instructions? Sounds about right I never did much better than that. It is a mobile brick with the little engine that could (as long as you had your foot into it). Quote Link to comment Share on other sites More sharing options...
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