Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 Not abused, and was well maintained. As I've learned owning a lot of old iron over the years, sometimes "S" just happens...Not sure what brand components were used. I do know it had a full rebuild kit at the time. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304171 Share on other sites More sharing options...
seyser Posted September 17, 2015 Share Posted September 17, 2015 Well keep us updated and take lots of photo's once you get it opened up! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304172 Share on other sites More sharing options...
j hancock Posted September 17, 2015 Share Posted September 17, 2015 Don't want to hijack your thread but quick question... Can main bearings be done without removing crankshaft?-JeremyA bearing roll can be done with the crankshaft staying in the block. 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304173 Share on other sites More sharing options...
Dieseldriver65 Posted September 17, 2015 Share Posted September 17, 2015 Not abused, and was well maintained. As I've learned owning a lot of old iron over the years, sometimes "S" just happens...Not sure what brand components were used. I do know it had a full rebuild kit at the time.I can agree with that,had a NEW engine all pro built lock up years ago. Oil flow was stopped/slowed somehow. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304180 Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 I can agree with that,had a NEW engine all pro built lock up years ago. Oil flow was stopped/slowed somehow.My old boss had a freshly rebuilt high dollar 427 side oiler lock up from a failed Wix filter... 1 Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304182 Share on other sites More sharing options...
41chevy Posted September 17, 2015 Share Posted September 17, 2015 If it laid with old oil for a long, long time, the acids and moisture in the oil will erode the bearing faces too. 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304187 Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 If it laid with old oil for a long, long time, the acids and moisture in the oil will erode the bearing faces too. It was in there a while, but the longest if ever sat without running was close to a year. Usually no more than a cpl months. Had No water in it. Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304206 Share on other sites More sharing options...
1965 Posted September 17, 2015 Share Posted September 17, 2015 Sounds like you might should plastagauge it 1 Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304209 Share on other sites More sharing options...
1965 Posted September 17, 2015 Share Posted September 17, 2015 Might have gotten wrong bearings put in it when built Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304210 Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 Might have gotten wrong bearings put in it when builtI don't think it would have did the work it did for 20-25 years if so? Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304219 Share on other sites More sharing options...
1965 Posted September 17, 2015 Share Posted September 17, 2015 Not saying Mack every did this but I have seen engines from the factory with bearings being .002; also seen engines with cranks not stamped; I was going by you saying it didn't have many miles on it; would think it would have to have alot of miles on it to make a vibration & loose oil pressure Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304223 Share on other sites More sharing options...
BOB DINGSDALE Posted September 18, 2015 Share Posted September 18, 2015 i did a 170 hp end in a 1956 engine and they wanted to know width at mack dealer .about 5 years ago Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304286 Share on other sites More sharing options...
BOB DINGSDALE Posted September 18, 2015 Share Posted September 18, 2015 p s . your not going to know anything until you take it apart Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304287 Share on other sites More sharing options...
Bigdogtrucker Posted September 18, 2015 Author Share Posted September 18, 2015 Talked to the previous owner last night, crank has not been turned I know that for sure. Quote Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304291 Share on other sites More sharing options...
theakerstwo Posted September 18, 2015 Share Posted September 18, 2015 Just like Bob told you.Pull it down and check it.Other wise you and all of us is guessing. 2 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304318 Share on other sites More sharing options...
thomastractorsvc Posted September 19, 2015 Share Posted September 19, 2015 Would the damper be worn out? Are new ones available I know most manufacturers recommend changing them out after 500,000 miles Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/41824-need-bearings/page/2/#findComment-304450 Share on other sites More sharing options...
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