That’s where I have my line for reading pressure at the rear. I’m going to do this mod also, but will keep my center location when I do.
I've seen the balance tubes run in various materials but based on previous work experience I would think some 3/8 seamless stainless with the appropriate compression fittings would be great and if you have the knack for bending could be tucked up right along the block and be barely if at all visible. I'd still try to tuck in a cushion clamp here and there to support it just on general principal though. Real Swagelock stuff would be nice but it looks like you can find affordable generic stuff on Amazon that would fit the bill nicely and not scorch your wallet.
Besides introducing a couple of new potential leak paths, is there any downside in doing a balanced line? Is it possible that this would create a condition that too much oil will be pumped too quickly to the top end, starving the pan? Looks to me like a great modification. I'm thinking of installing an oil idiot light sensor in the (somewhat) stock location, and moving my gauge to the back of the of the DRIVERS side gallery. The oil pressure gauge will be reading at the furthest point of its pressured travel. Thoughts?
You are simply pressurizing the passenger side galley from both ends. No chance it empties the pan. Gauge goes to the back of the passenger side galley. Jim put the fitting in the line.
This is application dependent... on serious HP Street motors, and race motors above say 600 HP, we like to open the main clearance up to allow the crank/block to move around a bit.. right around .003 typically. The larger your bearing clearance is, the more drop you will see from front to rear. The factory knew this would happen, it's why that passenger side galley necks down right about in the middle of the block.. If your building a street motor at .002/.002 your most likely not going to see a big drop. Two factors exist on how much front to rear drop you will see. How much oil flows thru the crank and bearings.. obviously bigger clearances, fully grooved main bearings, extra holes, big rod bearing and side clearance... ect.... flows more oil. the other you might overlook: How tight the lifter bores are... they are bleeding oil off too. We are simply supplying an extra oil source, independent of the oe pathways, to insure that the engine has all the volume it wants to consume, under all conditions. I like routing them with a braided line over the top of the motor, to fix one of the things that is wrong with the BBB... Where the oil pressure sender is located.. wrong from the standpoint of needed too much line, run thru too many potential hazards.. putting it back by the firewall where God intended makes life a lot simpler. That and the thought of a cracked hard line, spraying oil on the hot headers, gives me the willies.. I don't want to be responsible for someones car burning down.. JW
