Eagle SIR6123CB rods differences from stock oiling

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moparmat2000

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I bought a set of Eagle SIR 6123CB rods for my sons 318 build. Now that we knocked the stockers out of the block I noticed theres no oiling squirter holes in the big ends compared to the stockers. The stockers had these grooves to squirt oil at opposing cylinder walls. Is this something that should concern me?

Everything I have rebuilt up until now used reconditioned stock rods. It's just not worth it reconditioning stock stuff anymore. Is this something I should not worry about? I imagine this type of groove just makes the rod weaker. Anybody on here that can speak from experience of longevity on an engine rebuilt with these rods without oiling squirter grooves, or are my fears overrated and it doesnt make a **** that these oiling grooves arent in there. I'm mostly a body and sheetmetal guy, but have been known to build a number of engines and transmissions without any issues Heres pix.

Thanks
Matt

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Scat and Eagle dont have them either....Have not seen an aftermarket rod with the oiling holes....
 
Did you look at your new rod bearings yet, if you have them? Last couple sets I got did not have the holes either. So even re-using my stock rods with the new bearings I still lost that part of the oiling anyways.
 
Did you look at your new rod bearings yet, if you have them? Last couple sets I got did not have the holes either. So even re-using my stock rods with the new bearings I still lost that part of the oiling anyways.
U would have to modify the bearings. Kim
 
Stock Pontiac rods also had the oil spurt hole, but then deleted them on later engines.
 
One school of thought is to limit the amount of oil slinging around in the engine so it can't make it past the rings and shorten catalytic converter life. The other is, with the downward trend in zddp levels in some oil, the more oil slung up on the cam the better. Most new engines don't have the oil squirters for reason 1. On a street or truck engine, especially one that may idle for extended periods of time, I think reason 2 is valid. I've notched some replacement rod shells which is no big deal.
 
I just bought a new set of Scat rods for my 273 build, and they don't have squirt holes either. The guy doing my machine work builds NASCAR engines for a living, and said not to worry about it. 50 or 60 years ago, it was a thing.....now, not so much.
 
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