John3406 Posted February 9, 2021 Author Share Posted February 9, 2021 5 hours ago, Joey Mack said: That's what I thought too. That's why I used 5 degrees as an example... Now I wish I had done a few dozen more of these in the past... He's getting good help here... jojo Well i finally got everything all bolted on today. Radiator etc. Fired it up . It sounds really good. I only ran it about 15 to 20 minutes. Wondering if i need to set it a 5 deg or leave it at 7.5. I want to get it out and drive it and haul a couple loads but its below zero temps here. Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted February 9, 2021 Share Posted February 9, 2021 If it dont throw a check engine light on i would run it 1 Quote glenn akers Link to comment Share on other sites More sharing options...
John3406 Posted February 9, 2021 Author Share Posted February 9, 2021 How do you guys recommend break in. On other engines i have done i just run em like normal just dont leave them idle to much for awhile. Quote Link to comment Share on other sites More sharing options...
storkmack Posted February 9, 2021 Share Posted February 9, 2021 We usually let run a day outside at high idle then bring back in and retorque the heads Quote Link to comment Share on other sites More sharing options...
Popular Post fjh Posted February 9, 2021 Popular Post Share Posted February 9, 2021 warm it up to temp check for leaks ! Then Work its ass off Best Breakin! Full load and some Steep Grades! Time tested ! It seats everything properly! With the timing as it is thou , Keep an Eye on the water temp and the pyro! 3 Quote Link to comment Share on other sites More sharing options...
John3406 Posted February 9, 2021 Author Share Posted February 9, 2021 45 minutes ago, fjh said: warm it up to temp check for leaks ! Then Work its ass off Best Breakin! Full load and some Steep Grades! Time tested ! It seats everything properly! With the timing as it is thou , Keep an Eye on the water temp and the pyro! That would be normal operation for me😉 run hard but not abused if you know what i mean 1 Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted February 9, 2021 Share Posted February 9, 2021 3 hours ago, fjh said: warm it up to temp check for leaks ! Then Work its ass off Best Breakin! Full load and some Steep Grades! Time tested ! It seats everything properly! With the timing as it is thou , Keep an Eye on the water temp and the pyro! And remember it could have a leak some were but all engines i ever overhaul i told them same than Quote glenn akers Link to comment Share on other sites More sharing options...
theakerstwo Posted February 9, 2021 Share Posted February 9, 2021 And also retorquing the head bolts sure will not hurt anything but i do not.The engine i am running i did not but did rerun the valves.The old engines i started out working on has a fiber head gasket so a retorque after a week was needed.But the newer engines like a e6 or e7 has a metal fire ring holding compression only.Same way as a cat or cummins.But as i said it will not hurt anything.On the old end 673 we would back off each bolt one at a time and retorqued and you would see there was the nut would advance some before the torque value was reached.I have never seen that with a fire ring. Quote glenn akers Link to comment Share on other sites More sharing options...
John3406 Posted February 9, 2021 Author Share Posted February 9, 2021 I already found 2 small leaks. One on the water line going to water filter housing and the jumper tube from head to head was leaking a little fuel. I probably will retorque the heads. Not sure if its really necessary to loosen one at a time tho. Or just run thru them Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted February 9, 2021 Share Posted February 9, 2021 You need to back them off and retighten to gain any thing if any.Per macks old repair procedure. 1 Quote glenn akers Link to comment Share on other sites More sharing options...
Joey Mack Posted February 9, 2021 Share Posted February 9, 2021 John the fuel jumper is just 7 little pieces. Yes mack still sells the correct parts for this... For now:) jojo Quote Link to comment Share on other sites More sharing options...
John3406 Posted February 9, 2021 Author Share Posted February 9, 2021 59 minutes ago, Joey Mack said: John the fuel jumper is just 7 little pieces. Yes mack still sells the correct parts for this... For now:) jojo You're right. Dealer had all the pieces and will deliver to shop tomorrow 1 Quote Link to comment Share on other sites More sharing options...
fjh Posted February 10, 2021 Share Posted February 10, 2021 18 hours ago, John3406 said: I already found 2 small leaks. One on the water line going to water filter housing and the jumper tube from head to head was leaking a little fuel. I probably will retorque the heads. Not sure if its really necessary to loosen one at a time tho. Or just run thru them The main thing is to do it dead cold how ever you retorque I do as you do and just run over them again in order! 1 Quote Link to comment Share on other sites More sharing options...
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