Tony, this is the type of information that got me to subscribe three years ago. I doubt I'll ever build a race car; rather, I want a great, classic, daily driver that serves the purpose today that it was designed to serve when it was built. You have refined your videos, and you look much more comfortable in front of the camera. But I do miss the Stunt Carb!!!!!
I remember in the 80's about a electric pre startup oiler that had a reservoir. It had a connection to the key start with a delayed start till oil pressure reached a preset pressure. I've always thought that this was a very reasonable solution to avoid startup damage.
It avoids startup damage, it prolongs engine oil life, if prolongs engine life, lessens pollution levels of start up for many obvious reasons, and is just a great system overall.
I think what they thought at one time and what they think today have nothing in common. Direct injected engines seem to be garbage, and there was no real good reason to cut the engine life in half or more for the very little gain. If I were to off on a rant , it would be about how unions own politicians! They're working side by side for persona gain. Fuck democrats, that pander to complete idiots. All Biden it doing is trying to screw the middle class over and shift the blame for his own incompetence . This was all a trend far before Putin "attacked " Ukraine. FJB and his assault on the world
Great video Tony!! A lot of people fail to realize that pumps don’t make pressure. Pressure is resistance to flow. That’s why old worn out engines have low oil pressure, not necessarily from a weak pump, but because the tolerances (resistance) is no longer there. Keep it up!!
FoMoCo's Y-block 292/312 million dollar design engineered upper-end oiling-system was so bad J.C. Whitney had to solve their problem with an inexpensive aftermarket external line kit...that worked.
Excellent explanation of the oil flow through the block. I often see builders that ad a line from the main oil feed to the left lifter bank. Is that worth the trouble or just a race engine modification? Thanks for all the great videos. Mike
This is why I subscribe to UTG. Not for the JunkYard Jets ( which I just turn off ) but for videos like this which Tony describes in detail on how things to work. The knowledge is so vast that you're captivated of his wisdom and enjoy the stories. He is a master and the way he articulates is why this channel is a gem. Great Job.
What you're failing to realize, is the fact that Tony continues to teach even during videos featuring the young men and their project car. Sure, a few of those videos only focus on the car build itself, but make no mistake, Tony is teaching just as much in the majority of those videos as well. He's not just "disappearing into the background & allowing those guys to take over". So you're missing out young man. Look at it this way: who do ya think is teaching & coaching those guys along in the videos dedicated to their car? Answer: TONY. He is doing 2 things at once: he's teaching those guys AND the young viewers at the same time. Think about it.
Hi Mate, I’ve got an interesting old engine (for me anyway) it’s a 1953 260 cubic inch Rolls Royce inline six where the rods are drilled vertically to lube the piston pin but has a hole drilled at 90 degrees through the side of the rod to directly lubricate the thrust side of the bore. It also has such niceties as a billet crank, sodium filled exhaust valves, beehive valve springs, dual point distributor and everything is mounted via studs. The cast aluminium sump holds 16 litres of oil. I’d like to hot it up and stick it in my model A roadster.
That's where the Ford 427 "side oiler" gets its name,it prioritized oil to the crank first instead of the cam/lifters to keep up with the high RPMs used in the racing applications.
Crazy coincidence: Yesterday I was looking at the B and RB Mopar oil passage enlargement drill bit at 440 source and was trying to figure out if it was something I needed or if it was just snake oil (pun intended). Looks like it would increase the volume of oil to the main bearings. It would have taken me a while to figure that out without this overview video. Thanks Uncle T!
This is why Uncle Tony and Uncle Kathy are National Treasures. Thanks for the wonderfully presented explanation. And, Yes we will give Uncle Tony credit for "Circulartation" once it is entered into the dictionary.
Thanks UT! I have worked on a lot of engines with buddies and they always want better oil flow to the cam and rockers and worry about restrictions. Now, thanks to you, I understand the How and why of the oil circulation!
Just change the oil more frequently for a while, say every 1000 for 5k. The high detergent levels will scrub most of the crud out. Some guys add extra detergent additives or even atf to speed it up, but thus can dislodge so much at one time that the filter can clog.
Circulatation... *CUT* Oil passes though an interdimensional portal, and returns 4 picoseconds later with every third molecule upside down. No, wait: that's just the mushrooms talking. Carry on - more fine videos from the guy who makes things work, in the style we all love so much. Thank you Tony.
Absotively the lifters and top end are prioritized because oem panic about comebacks due to noise. Some, like Oldsmobiles are so bad they will literally fill up the valve covers with liquid oil when pressed and why they are kinda shit to performance modify.
You truly have a talent for explaining engineering design in lay terms and keeping it interesting. Not only the technical aspects, but the pros and cons of each decision as well as the thought process of the engineers.
Hey Uncle T, thanks for dropping all this knowledge on us. Quick question: As someone who’s still running a stock, never opened ‘67 283 Chevy with the Powerglide. Is running unleaded gas causing any ruckus that I should be aware of?
I cracked open my 66 283 and it had been run for years without lead...ND there was no wear on the valve seats, I cleaned them up, fixed the valve guides and put new seals and springs. I gave them a quick lap with grinning compound and they're still on my engine.
The seats will work harden over time from heat and use. Really the only thing that ends up happening is a sunken valve. You should be just fine though if it's ran this long. If however you get the valves and seats reground I would recommend having hardened seats installed. If you regrind the seats and valves it cuts away the work hardened surface from the cast iron and can start the valve sinking issues. Starting with a freshly done cast seat the lead or substitute is definitely required but after all this time heat cycles and valve repeatedly hammering the seat they are plenty hard enough. I would recommend premium gas though leaded fuel helps prevent damaging pre-detonation issues and typically was a higher octane better quality gasoline than what is available these days at the pump short of leaded race gas or aviation fuel they would be ideal and much closer to what was commonplace back then.
Stil amaze' me that some enginge just start and drive after 30 years after sitting. Who know wich GM small block (muscle car era) had the best oiling system out of the box
Thanks a few corrections 1. The number one main bearing gets oil direct from the filter 2. The right main gallery feeds the mains and the right side lifters 3. The left gallery only feeds the left side lifters 4. The rockers are fed through the #4 cam bearing which acts to limit the supply of oil to the top end.
Yes you are correct on the #4 cam bearing. I believe there are actually three oil holes in #4 cam bearing and the camshaft oil passage is drilled at an angle that alternates with the left & right side to direct oil to the top end. I believe I am right in saying this and I believe this is somewhat unique to Chrysler big blocks? I am currently involved with an engine rebuild and it is not getting oil to the right side top end. Machine shop cleaned, bored and installed cam bearings. Suspect the cam bearing was installed in the wrong orientation? Will need to pull cam and check. Lesson learned to check this prior to assembly.
Miata motors are also known for lifter tick, they actually have piston oil squirters that some people remove and cap off. I'm assuming that leaves more for bearings too
Nearly every modern motorcycle engine use piston sprayers. The reason is for cooling the under side, so much thinner castings can be used. At 13-14 thousand RPM, the piston doesn't have time to cool between cycles.
@@outlawbillionairez9780 the miata crank turns to a noodle at 8200 rpm, Rev limiter kicks at 7400 on stock ecu. No wonder they remove them on the forged internal builds.
I pretty sure Im wrong but I think I remember seeing something about Ford straight 6 where the oil traveled to the crank first. Like first generation mustang 6 cylinders. Or called reverse oiling. My memory is a blur.
I'm a Ford guy butt use Unka Toeknee for reference. I'm rebuilding a 4.0 OHV and have spent time cleaning and studying the oil systems in the cast and drills. Fascinating how it all works and the many passages to balance psi where it's needed. Some places, it's a miracle how any oil gets to the parts like rockers on this specific engine.
@@jimifed2798 you know that product has been around for ever , im going to research it more thanks for telling me .the second you hit key the Lucas is cling on parts ,at auto stores they have the gears in glass . I've heard engine,s taken apart show no wear after Lucas has been added to oil . Goes back to OEM I guess Thanks again, I sold my mustang that I used Lucas in 7qt valvoline 10w30 racing oil 1qt Lucas. It was a sweetheart Boss302. Now drive 2010 mini cooper S . 35mpg 🤣🙋♂️👍🤑
Any idea why my Gen IV BBC 454 takes so long (4-5 minutes) for oil to reach the rockers? Lunati roller lifters, Trend pushrods, Harland Sharp roller rockers, stock style Melling oil pump, no oil restrictions. Thanks, Rich
These are SO MUCH better and the only UTG videos I will watch. No offense to any of the "guests" but it is one thing to have an occasional feature but when someone is on everyday, it seems like they are riding Tony's celebrity. I like UTGs BECAUSE it is JUST Tony--or Tony visiting an already established shop or boneyard, not guys looking for a come up. Watching and learning from Tonys decades of vast knowledge while being entertained by his engaging personality is what made the channel successful--if you want to see people riding coattails,there are LITERALLY thousands of automotive channels for that!
Did block lubrication flowpaths ever change over the lifespan of the LA platform? I realize this video is specific to big block but I have a pre-magnum roller 360 and I'm curious. Also, are there any publications from original Engineers explaining their design choices? The information you're providing is incalculably valuable
Another great video, very informative. But let us not allow this RU-vid channel to become the meeting place for those amongst us who would wish to conspire to murder Her Majesty's English. (say that with a posh British accent). Galley : a type of ship mainly propelled by oars. Or a kitchen on a boat or a aircraft. Galleries: a series of long, narrow, possibly interconnecting or branching passageways. I've heard of people cooking their dinner on a engine but not actually in the engine. Don't take this too seriously, I'm taking the piss.
Tbh engines and design change so much from manufacturer to manufacturer that what you should do is look at what the manufacturer wants you to do. personally I don't prefill them and I've had engines make it in excess of 230,000 miles. It doesn't matter how you fill the filter just make sure you got a good one and it's got good oil.
Excellent explanation of how oiling works. One of those topics where you think you know something, but clearly didn't have all the details. Much appreciated. Quality of the video is excellent as well.
I have a 1971 Challenger 340 that has not run since 2011 I got it running but have a noisy lifter in driver’s side. What should the procedure be I was told ATF oil change I have had valve cover off push rods seem fine.
Back in the day they used to cross-drill the crank for better lubrication. Can't you accomplish the same thing with fully grooved bearings? Cross drilling the crank was preferred because it decreased the available bearing surface. Am I correct? Please comment on one of your episodes. Cheers!
Very informative and clearly the best coverage of the topic(s) anywhere on the net...thanks....does the rockers get an intermittent oil supply in a hydraulic lifter engine similar to the intermittent supply to the rod bearings in an engine w/ only the upper main cap grooved? Solid lifter engine would have continuous flow to the rockers? Never realized roller bearings are not lubricated w/ pressurized oil...have seen the squirt hole for the valve tip rollers but thought the rocker trunnion rollers were feed from the pushrod/rocker cup hole. Thanks
I'm putting a 5.9 magnum together and I noticed the cam bearing holes din't line up with the oil galleys in the block. I looked it up and a lot of people saud that having them offset, but not more than blocking half the holes is good because it acts as a restriction and keeps oil elsewhere. I'm not sure how I feel about it though. People were saying they've seen many many magnum engines like this with no wear.
I have to say that, these days, I prefer solid valve train over hydraulic lifters. I can deal with the extra noise and the extra tinkering. After dealing with the hydraulic lifters in the 3.1 liter V6 my 2003 Grand Prix had, I am good on dealing with that ever again. Since I went back to being in a Honda the last 9 years now, I rather have the most direct connection possible from the cam to the valves.
Why not have a 12 volt pump, that engages as soon as the key is turned, and that pressurizes the entire oil system before the engine is started? In the same manner that a diesel engine has the glow plugs energized prior to startup? You turn the key to "run", and then pause there until the idiot light goes out. I remember discussing this very thing back in the late 70's in high school automotive class. I wonder how long engines would survive, if they NEVER started up without a fully pressurized oiling system? It wouldn't be hard to engineer such a 12 volt pump that picks up oil from the pan, and pressurizes the system, so why has it not been developed?
Galley: 1) a low, flat ship with one or more sails and up to three banks of oars; 2)the kitchen in a ship or aircraft; 3) a printer's proof in the form of long single-column strips, not in sheets or pages Gallery: 1) a room or building for the display or sale of works of art; 2) a balcony, especially a platform or upper floor, projecting from the back or sidewall inside a church or hall; 3) a long room or passage Which one of these fits better for the *passages* in an engine through which oil flows?
Cross drilling the crank is a better choice then switching to fully grooved main bearings (assuming the tools and skill are available). The strength of the oil film across the width of the bearing is directly related to the bearing surface width. A groove down the middle splits the bearing into two narrower bearing surfaces, reducing the load carrying capacity and film strength. Most of these classic engines are so over-designed, if there are fully grooved bearings available, use them, but they will not have the same service life as ungrooved bearings. Your mileage may vary.
Oh ya Tony you sed Chevy.but no fun is fun but the truth Tony would make a excellent shop teacher I wish he was my teacher when I have taken auto shop.my teacher was always crappy mood no fun...but I got what he was teaching.
Unk, since none else around you will say anything. It's time to move up a size in shirts. I can't believe everyone just lets u walk around wit extra schmedium shirts on and says not a thing. Well nephew gonna put ya on notice playa!
I remained amazed by the engineers who designed the modern internal combustion engines without the assistance of computers much less electronic calculators.
Question what happens when Lifters BORES needed to be Bushed? then shop never drilled out the feed holes. I had that done but never had them drilled out for side feed with a Hydraulic cam . the engine never had a problem also note i installed high volume ump
This is why I devised an engine pre oiling system using turbo post oiler pumps. 10-15 secs of the pre oiler pump running pressurises the oil galleries pre start..
I knew of a 440 that had -0- oil pressure. It was running fine in a boat and all of a sudden pressure loss and a hard miss. The owner shut it down and was towed in. When the shop took a look at it they told him the engine was dead and needed replacement. When they took the old engine into the shop they found a bent pushrod and the lifter laying in the valley. They put the lifter back in installed a new pushrod, it ran great and had good oil pressure. They sold the engine off as used and it ran for years to come. We never did know why the pushrod bent?
Old Ford y blocks had horrible oiling to the top end. Aftermarket kits plumbed extra oil from the sending unit port into the head via a hole in the valve cover on each side just to keep the top end lubed and semi quiet.
I’m not a gm guy but if I remember the olds 455 head oil drain holes are at the top of the head so high pressure pump will cause oil starvation due to all of the oil being in the heads.
Hello Tony, is it possible to to inspect those oil channels to see if they are reduced by blobs of casting and is it possible to chase those oil channels with extra long drill the same diameter ?
