Making power out of the 318

Newbomb Turk said
I agree and will add this.

The big bearing killer on the SBM is that 3-4 and 5-6 rod bearings are fed by the 2 and 4 main bearings respectively.

So you are feeding those bearings with one feed PLUS the rockers. Every single roller cam I’ve ever seen has a groove around the 2 and 4 cam bearings to get full time oil to the rockers and springs. Which may be good. But, it takes a TON of oil to feed the rockers (and getting enough oil out to the adjusters) and ALL of that oil comes off that one main bearing and I suggest that extra oil going upstairs is a major contributing factor to killing the 3-4 and 5-6 rod bearings.

I agree. IMO, blocking the oil to keep the mains happy is what is needed for that high rpm. I’ll through the pushrods is one way. If you’re staying with the stock design, a new route must be taken to oil the rockers.

In general, this haven’t had a consistently high rpm engine. 7K plus performer. So I haven’t had issues.

Newbomb Turk said
At this point, I don’t have a good answer of how to fix it, but the crossover doesn’t address the oil going to the rockers.

Agreed, just the lifters.

Newbomb Turk said
My gut is telling me to take the 2 and 4 cam bearings and clock them so it blocks the feed hole hole up to the rockers. So NO oil gets to the rockers from the stock holes.

That’s one way to do it. Proba

Newbomb Turk said
Then to feed the rockers I want to drill and tap into the oil pressure gallery running up the back of the block and run a hose off that to a T or Y and run one hose over to the gallery that feeds the drivers side and another hose over to the passenger side.

Since it will be full time oiling I think a restricter somewhere around .060-.080 would be plenty.

Just rough thinking at this point, but it would stop taking oil from the rod and main bearings.

Thinking about it you could also just pull the oil from the drivers side main feed, but I’m thinking I want to stop taking any oil from the main feed.

I’m going to start putting my junk back together late April or early May. When I get there I may make a video after I get figured out what I want to do.

Newbomb Turk said
I got the joke lol. Don’t know who else gets it, but I got it. GOOD ONE

The crazy part is…. It’s also an EZ & do-able simple project for anyone to copy.