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4.0 connecting rod numbering

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Old 11-14-2016 | 08:18 AM
  #16  
t.mcginley.jr's Avatar
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From: New Jersey
Year: 2000
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Engine: 4.0L
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Anybody else wanna chime in and tell me I f**ked up? lol Yes, it's my fault for not numbering them beforehand. I'll admit I'm used to working on Toyota/Nissan engines where they are numbered from the factory

I didn't give the machine shop my crank, therefore they couldn't have suggested what bearing sizes I needed. I mic'd the crank journals myself and determined that standard size bearings would work. I know OEM bearings can be ordered in different grades, but I bought a set of King std. bearings. I used plastigage and as expected, all oil clearances are well within spec both for the mains and rods.

I also just measured the connecting rod end play on each journal and they are all within the 0.010-0.019" spec. As for keeping each end cap with it's correct rod that's easy since they are already stamped with letter combinations from the factory. At least Chrysler had that much foresight.
Old 11-14-2016 | 10:19 AM
  #17  
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Originally Posted by t.mcginley.jr
Anybody else wanna chime in and tell me I f**ked up?
welcone to the internet

it sounds like you know what you're doing. the rod position doesn't matter as long as they are within spec. you know what you're doing. the only additional step i would've taken is having that crank polished. my guy charges $30 to clean, polish and verify everything is still ok. however, if it was good when you pulled it there won't be an issue. keep at it and report back.
Old 12-22-2020 | 07:33 AM
  #18  
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So which pair of letters goto.which cylinder
Old 12-22-2020 | 07:35 AM
  #19  
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Originally Posted by s346k
it's a vital step in engine assembly, not doing so is simply wrong and outright foolish.
they are marked with latters.what letters go ro what cylinder

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