Joey Mack Posted yesterday at 04:07 PM Share Posted yesterday at 04:07 PM Good points as usual, fjh.. it was running. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587772 Share on other sites More sharing options...
Freightrain Posted 20 hours ago Author Share Posted 20 hours ago Ya, my thoughts also but figured I would ask those that know these motors. It ran before and all numbers are within .001 from old to new. Few more crush is better then a few less! 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587782 Share on other sites More sharing options...
Joey Mack Posted 20 hours ago Share Posted 20 hours ago Yes sir... My knowledge is only what Mack taught me. I Have only built stock Mack engines by the book. I have not ever colored outside the lines.. With that said, even though my engines STAY running... I wish I knew how to make small changes to improve performance.. Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587783 Share on other sites More sharing options...
fjh Posted 17 hours ago Share Posted 17 hours ago 3 hours ago, Freightrain said: Ya, my thoughts also but figured I would ask those that know these motors. It ran before and all numbers are within .001 from old to new. Few more crush is better then a few less! Yup even is most important! No more than two thou! Under one head! 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587786 Share on other sites More sharing options...
Joey Mack Posted 17 hours ago Share Posted 17 hours ago Exactly!!! Fjh Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587787 Share on other sites More sharing options...
fjh Posted 16 hours ago Share Posted 16 hours ago 28 minutes ago, Joey Mack said: Exactly!!! Fjh I use high tack spray on around all water and oil holes on the fibre part of the gasket both sides! Just a habit thro back from my v8 days! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587789 Share on other sites More sharing options...
Freightrain Posted 4 hours ago Author Share Posted 4 hours ago 15 hours ago, Joey Mack said: Yes sir... My knowledge is only what Mack taught me. I Have only built stock Mack engines by the book. I have not ever colored outside the lines.. With that said, even though my engines STAY running... I wish I knew how to make small changes to improve performance.. My new friend runs that 237 pulling engine. He knows how to make them run! Even stays together at 3400 rpm! Yikes. I'll never do that but maybe I will try to get a few more HP out of it at some point. He, his dad, and grandfather are big Mack guys and weren't afraid to make power. His Dad's comment to me was "I can make that 300 smoke the tires on that single axle". 😆. Hold the phone..... I need it to last a long time first. 2 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587798 Share on other sites More sharing options...
mowerman Posted 2 hours ago Share Posted 2 hours ago Larry, I don’t understand why you can’t take them to work and knock them down. If nothing else it would clear your head. Good luck. Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587806 Share on other sites More sharing options...
Freightrain Posted 1 hour ago Author Share Posted 1 hour ago To take just .003 off now would be a PITA. It was fine before, it will be fine now. 2 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/13/#findComment-587807 Share on other sites More sharing options...
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