COOL Rod Bearing
#1
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Hi ALL, MANY threads are about rod bearings and how to increase their life.
ROD-bearing life is about COOL oil.
Name the best way to increase oil flow at the rod bearing ?
ROD-bearing life is about COOL oil.
Name the best way to increase oil flow at the rod bearing ?
#2
TECH Enthusiast
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Low viscosity lubricating oil.
For an LS engine this means 5W-30 in normal SUMMER conditions.
0W-30 for WINTER.
For an LS engine this means 5W-30 in normal SUMMER conditions.
0W-30 for WINTER.
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G Atsma (09-02-2024)
#3
11 Second Club
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High volume oil pump, a pan with extra oil capacity, an oil cooler and a good filtration system.
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grinder11 (09-02-2024)
#4
ModSquad
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Piston guided rods are the choice for endurance teams to keep the big ends cooler. Distance from rod to crank and between rods is greater, which helps with temps (narrow bearings) and also helps the rod bearings shed oil quicker…no shrouding…which allows for more flow. More flow means a cooler rod bearing.
A quick and dirty way to mimick this idea is to cut a clearance groove 4 degrees or so off center, across one side of the rod cheek, vertically. It will allow oil to shed faster from the bearing and also helps direct oil upward toward the cylinder/piston.
Endurance teams are running dry sump setups with external pumps that are simple to adjust pressure and flow with. Obviously either choice here requires more pump volume.
A quick and dirty way to mimick this idea is to cut a clearance groove 4 degrees or so off center, across one side of the rod cheek, vertically. It will allow oil to shed faster from the bearing and also helps direct oil upward toward the cylinder/piston.
Endurance teams are running dry sump setups with external pumps that are simple to adjust pressure and flow with. Obviously either choice here requires more pump volume.
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DualQuadDave (09-04-2024), Vega Racer (Yesterday)
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G Atsma (Yesterday)
#10
Launching!
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Had me thinking you were a bot or just off your rocker with the squish comment on the other thread Mr. Lance. On a serious note is this actually a thing? How many of you go and drill holes in your new bearings? And if you do on what type of application? Boosted? Stroker?
Last edited by Guy with a Chevy; Yesterday at 06:08 PM.
#11
TECH Senior Member
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Had me thinking you were a bot or just off your rocker with the squish comment on the other thread Mr. Lance. On a serious note is this actually a thing? How many of you go and drill holes in your new bearings? And if you do on what type of application? Boosted? Stroker?
He was a sponsor at one time and posted as PanteraEFI. What he doesn't know about building engines would fit a short post-it note.
#12
Launching!
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Well excuse mwuahh I have barely started trying to read daily for the last few months and the comment was definitely sounding like spam so my apologies for my *** showing Lance as I do not know the "Squish" of my setup yet.
But this post has me thinking if I should drill some .125-.250 holes in my bearings for increased oil cooling capacity but will it actually prolong the life of the bearings?
But this post has me thinking if I should drill some .125-.250 holes in my bearings for increased oil cooling capacity but will it actually prolong the life of the bearings?
#14
Launching!
#15
11 Second Club
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Low viscocity oils actually creates little to no oil pressure which can also cause premature bearing wear.
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G Atsma (Today)
#17
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The FF86 MAIN Bearings are pictured with many oil holes that will allow MORE oil to flow into the "clocked" rod oiling crankshaft passages
I DO NOT like to use "full groove" mains.
I have used/made full groove main caps.
Lance
The FF86 MAIN Bearings are pictured with many oil holes that will allow MORE oil to flow into the "clocked" rod oiling crankshaft passages
I DO NOT like to use "full groove" mains.
I have used/made full groove main caps.
Lance