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billybob
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Joined: Apr 20, 2011
Posts: 254
Location: mid missouri
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 Posted: Tue Feb 28, 2017 7:50 pm Post subject: L-134 break-in. |
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Does anyone want to give me any advice on the proper break-in procedure after the start up of a completely rebuilt L-134? I found a good article a while back but I can't find it again. Thanks for any advice.
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1952 M-38 # 53623 - 2-52. M 416 trailer. |
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oilleaker1
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Joined: May 14, 2009
Posts: 972
Location: South Dakota
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| Posted: Sat Mar 04, 2017 6:57 am Post subject: |
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| Re-torque the head if you haven't. Change the oil in about 500 miles. If your idle changes, re-adjust the valves. Make sure the thermostat has the 1/16 inch by-pass in it or drilled. Without it, it opens late and can get your engine quite hot------not good. Hope she runs good for you. John |
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billybob
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Joined: Apr 20, 2011
Posts: 254
Location: mid missouri
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| Posted: Sat Mar 04, 2017 7:24 am Post subject: L-134 break-in. |
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Thanks oilleaker 1 for reminding me about the thermostat. I'd forgot about that.
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1952 M-38 # 53623 - 2-52. M 416 trailer. |
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strathdaigeil
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Joined: Oct 24, 2016
Posts: 38
Location: Murfreesboro, TN
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| Posted: Wed Mar 08, 2017 9:33 am Post subject: |
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| oilleaker1 wrote: | | Re-torque the head if you haven't. Change the oil in about 500 miles. If your idle changes, re-adjust the valves. Make sure the thermostat has the 1/16 inch by-pass in it or drilled. Without it, it opens late and can get your engine quite hot------not good. Hope she runs good for you. John |
I am having an engine rebuilt for me but I have never heard about the bypass of the thermostat. Can you explain more? If I am running an M38 engine with the bypass hose, will I still need to drill the thermostat? |
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wesk
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Joined: Apr 04, 2005
Posts: 16260
Location: Wisconsin
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skyjeep50
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Joined: Feb 20, 2007
Posts: 606
Location: Illinois
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| Posted: Thu Mar 09, 2017 8:13 am Post subject: |
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You asked about engine run-in - look at page 98 in TM9-1804A (in the "Downloads" section of this website) - it details a rather thorough procedure to follow to break-in an engine. While you may not have all the equipment mentioned, you can follow a similar test cycle.
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1951 M38 |
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dpcd67
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Joined: Nov 25, 2016
Posts: 187
Location: Iowa
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| Posted: Sat Mar 18, 2017 11:03 am Post subject: |
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| I just drive them; but I do keep the revs down for the first couple hundred miles. And I have built several L134s and Dodge 230 flatheads. No issues noted. |
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