Ondonti
10-17-2013, 02:59 PM
Had these ideas as I was assembling a shortblock last night with some weird near free closeout sale bearings from rock auto. (only $15 for my rod bearings and only $12 for my mains). Thought they were going to be Clevites but oh well.
I feel.....everyone I see posting on 3/S sights obsess about the main oil passages or other oil passages (to the heads) hogging oil because they are simply "near each other". I do not see these as real issues and feel that the level of inane obsessiveness people put into balancing intake manifolds would be better served in an oil system that actually requires a constant flow (not a pretend constant flow from valves that spend most of their time closed) and where you can't compensate by modifying your tune. These wasteful "big carburator on junk motor" ideas probably come from knowledge of bad oil passages on other motors (like old Chevys).
The 6g72 Lubrication system needs balance more then anything else. This is an easy way to do that without losing a bunch of bearing surface on the lower bearing.
http://i546.photobucket.com/albums/hh426/ondonti/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3016.jpg (http://s546.photobucket.com/user/ondonti/media/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3016.jpg.html)
http://i546.photobucket.com/albums/hh426/ondonti/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3018.jpg (http://s546.photobucket.com/user/ondonti/media/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3018.jpg.html)
http://i546.photobucket.com/albums/hh426/ondonti/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3021.jpg (http://s546.photobucket.com/user/ondonti/media/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3021.jpg.html)
http://i546.photobucket.com/albums/hh426/ondonti/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3023.jpg (http://s546.photobucket.com/user/ondonti/media/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3023.jpg.html)
I just made up the number of holes and the locations as an example. These bearings are weird in that they have a smaller groove on the lower bearing, a useless set of holes, and a larger flowpath in the upper bearing compared to OEM. These are non oil squirter bearings that are no longer made new by companies like Clevite.
Motor I just put together has no use for bearing improvements but my Duster might need them if I start pushing the cast crank hard again.
I feel.....everyone I see posting on 3/S sights obsess about the main oil passages or other oil passages (to the heads) hogging oil because they are simply "near each other". I do not see these as real issues and feel that the level of inane obsessiveness people put into balancing intake manifolds would be better served in an oil system that actually requires a constant flow (not a pretend constant flow from valves that spend most of their time closed) and where you can't compensate by modifying your tune. These wasteful "big carburator on junk motor" ideas probably come from knowledge of bad oil passages on other motors (like old Chevys).
The 6g72 Lubrication system needs balance more then anything else. This is an easy way to do that without losing a bunch of bearing surface on the lower bearing.
http://i546.photobucket.com/albums/hh426/ondonti/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3016.jpg (http://s546.photobucket.com/user/ondonti/media/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3016.jpg.html)
http://i546.photobucket.com/albums/hh426/ondonti/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3018.jpg (http://s546.photobucket.com/user/ondonti/media/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3018.jpg.html)
http://i546.photobucket.com/albums/hh426/ondonti/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3021.jpg (http://s546.photobucket.com/user/ondonti/media/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3021.jpg.html)
http://i546.photobucket.com/albums/hh426/ondonti/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3023.jpg (http://s546.photobucket.com/user/ondonti/media/Mitsubishi/6g72%20Tech%20Pics/Oil%20System%20Mods/SANY3023.jpg.html)
I just made up the number of holes and the locations as an example. These bearings are weird in that they have a smaller groove on the lower bearing, a useless set of holes, and a larger flowpath in the upper bearing compared to OEM. These are non oil squirter bearings that are no longer made new by companies like Clevite.
Motor I just put together has no use for bearing improvements but my Duster might need them if I start pushing the cast crank hard again.