[Dragncar]

Originally Posted by S/st 54

Billy thanks for sharing. I also have seen the #2 main bearing issue. I would just roll another bearing in #2 at the end of the season.I drill out/enlarge the bearing from the oil feed I’m not really sure how well it works but I still do it. I think your onto something with the roller cam bearings giving the mains more oil. I think it was LPI that drilled out the main saddle oil feed hole and the lifter galley’s to make both bigger to increase oil volume. That might be worth a phone call to Mark Luhn.
Also in a extreme case I think Mike and Eric went above and beyond to feed the #2 main extra oil on their fire breathing nitro motor. There is a thread on here about that somewhere about how they got the bottom end to live.

Roller cam bearings are also going to give you 5-10 HP just from all that oil not dumping on the crank. Power to be had there per the folks in the know.
I drill everyone of my main bearings the same size as the oil hole in the block on the singles and on the tri holes the one on the "tab" side of the 3 holes that intersect. It gets the shot of oil.
Heck with that "slot" those bearing as is. Oil still hits the back of those bearings.
As straight a shot as I can get.
BTW, why can,t we get priority main oiling in our aftermarket blocks ? Why cant it get re routed. Is it possible ?