IGN-1A

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 ?

Full Power

Low viscosity lubricating oil.
For an LS engine this means 5W-30 in normal SUMMER conditions.
0W-30 for WINTER.

01CamaroSSTx

iTrader: (3)

High volume oil pump, a pan with extra oil capacity, an oil cooler and a good filtration system.

Che70velle

iTrader: (6)

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.

TrendSetter

never let your engine oil go above 120f

IGN-1A

Hi Trend, you should get a "C" for clean oil.
Lance

Forcefed86

iTrader: (4)

Put a bunch of holes in them.

IGN-1A

Yes F-86, Rod Bearings NEED a hole that will face the piston crown,
Then add a Hole threw the conn rod at that point
GOOD TEC '86

Forcefed86

iTrader: (4)

Lots of holes! Like Toyota does.

Guy with a Chevy

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?

G Atsma

If you've been around here more than a week or two you would know Lance Nist is not a bot.
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.

Guy with a Chevy

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?

wannafbody

iTrader: (2)

0W10 will get in all the nooks and crannies

Guy with a Chevy

and also not be able to carry the load of a LS engine if I had to guess and destroy the bearings prematurely

01CamaroSSTx

iTrader: (3)

Low viscocity oils actually creates little to no oil pressure which can also cause premature bearing wear.

Forcefed86

iTrader: (4)

I was joking for the most part. Though that is a legit Toyota bearing, I wouldn't go drilling additional holes in my "performance LS engine" bearings.

IGN-1A

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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