Oiling System Flow Path Of The Classic American V8 Engine
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- เผยแพร่เมื่อ 5 ก.พ. 2025
- While there are many design variations that separate the engines from Ford, GM and Chrysler, many systems contain universal features. Here is a run through of the typical Classic Era American engine oiling system as illustrated on a Big Block Mopar. The flow Path starting from the pickup strainer and continuing all the way up to the rockers and everything in between.
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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.
Yes! All of this.
Love the Jets but, I did teach auto shop at a high school so, the dynamic is familiar.....
What's wrong with the jyj's?
@@robidsgarage I would say they’re an acquired taste I have yet to acquire. 😜
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.
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.
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.
Loving it T👍
@@DerpyRedneck yeah sounds very effective. Put it on the shelf!
There was another one that was pressurized , no electronics. I think it was called Accusump, possibly by Holley.
Old Packards had a pre-oiling setup. Ferrari said he got the idea for his 12 cyl. engine from the Packard Twin 6.
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!!
Yeah it's always fun to watch a mechanical gauge on a cold start and it takes 5-15 seconds before the needle even moves,it gets ya thinking.
In the hospital with possible heart attack and I’m watching this video. It lowered my blood pressure quite a bit. He’s a dr too. Big block Chrysler calms me. Good video
Really appreciate your style. No blabbing about the weather, your cat, or whatever, no bullshit intro, just right to the point and on point the entire video.
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!!!!!
Thank you UTG, for having these basic learning videos out there. People will be viewing these for generations.
Can you imagine an engineer explaining this, Uncle Tony your the only person I watch that can explain this and speak English at the same time! Thank you so much!
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.
That or poor oils to blame?
true but the y block also had priority mains oiling and solid lifters
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.
You’re a natural born teacher. Never considered the oil routing in an engine to be that important, but how wrong I was! Please keep’em coming!
Interesting how car manufacturers were always concerned with reducing engine noises and the general public complaining. Never though of it like that.
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
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.
Same same always wondered why they called them side oilers now I know cheers Tony !
Learned some stuff again. I'm getting less dumb everytime you do one of these. Keep it up
My parents had a 318 DB6 Dodge. It was kick arse the power in it was amazing and it was not looked after. Dodge had some magic. My Grand Father had an old Willies. Could not be killed.
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.
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!
I never knew just what the tern Side Oiler meant. Now I do . Thanks UT.
Therapeutic listening and to watch, and I learned so much in such a short time. Wow....
Uncle Knows his work 👍💯
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!
Great video UTG👍👍
I love all the candy-colored engines you have around your shop. They look good enough to eat!
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.
Thanks UTG. I am an engineer (not automotive), and got alot out of this .
Looking forward to the next one about types of oil and your recommendations
I really like the idea of running two grooved main bearing, Makes sense. Definitely trying that out Thank you Uncle Tony.
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.
The early 265 sbc lifter galleries were fed through the rear cam bearing. A slot was cut in the journal that exposed the oil feed to the galleries for about a third of the cam rotation. The first bbc also fed through the rear cam bearing but the journal was grooved all the way around so the galleries got oil all the time but it was metered by the size of the holes in the cam bearing. It was very common for guys to buy aftermarket cams without the slot or groove, put them in without machining the rear journal and have no oil to the lifters.
The school of UTG has taught us again! I especially liked how the connecting rods and rust pins get oil! Good visual using the thin wire!
So fundamental a topic and yet so vaguely covered in most places. Uncle's explanation is the best I've seen.
This is what I come to youtube for. The wonderful combination of theory and practical knowledge. More of this please Tony!
Great info the one engine besides those mentioned that has priority main oiling is the Windsor Ford 260 to 351 w
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
X2 I have seen this as well with the disclaimer that it's really only for extended high rpm use but I would love a better explanation
Really helped my understanding of oil circulation. Good video. '68 Camaro with 327 small block.
I'm planning on adding a external oil line for my 351m for starvation issues on this block
Could you go through a Cleveland block like that one day, please.
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 way cool. I would love to see it
going with the double groove main bearings for sure . Thanks Bro
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.
Loving them Rustoleum paint jobs on those blocks!!!
Tony , that was the best analogy I have ever heard on V8 oiling systems . Thanks
Good teaching I’m not a mechanic but I like how you go step by step in your videos I have learned a lot about engines
Thanks Toni for explenation I have had a rough idea of order of oiling but not understood implication of pros and cons .
Love you Uncle Tony. You taught me alot!
@@DanEBoyd duh heck fer hew?
Learned a lot in this brief video. Nicely explained as usual.
This channel just keeps getting better. Thx for sharing
You are my new favorite TH-camr. Your a plethora of great knowledge. I’ve always tried to explain things like you do and it’s like I scare people off lol.
But I’m lovin the videos. Keep up the good work. It’s needed especially today.
Videos like this are why I love this channel, great video guys
Your videos are a gift Tony!!! Always learning something new or tuning up what I thought I knew or never thought of!!! Thanks!!!🇺🇸
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..
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!
Precise & concise…, that “even a caveman (such as myself) can understand it… just like I like it.
Thank you sir.
Glad to see your getting back into the type of videos that created your following. I would like to see Slag hammer content on your channel
Thanks for sharing your knowledge and experience UTG
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.
Thanks Tony
Wow, thanks Tony, I've never heard an explanation as easy to understand as what you've given to us today! Thanks Bro
Very good video love how everything is broken down.
Excellent lesson Uncle Tony.
Cheers😊
cool tip on
when to use high vplume oil pump.
👍
Damn it man....Tony....you are just one of the most awesome guys on the www......showing all us wanna-bee's how it all works!!!
Bless you and your channel, man!!!!
Do a cross drilled crank one day. I love to learn from you TONY a true old school mechanical engineer
Great video, all those oil passages were a mystery to me.
Garage 54 on YT just translated a video where they made a clear oil filter. And showed it working. It was kind of cool.
just the best thanks
nice video uncle tony well explained and thank goodness uncle kathy saved the day lol
Thanks these were things I learned the hard way as a kid
It's ok tony! Far as getting tongue tied goes. I like the way you talk. 👍
I wish I grew up with you. Truly analytical people are the people who succeed in this apathetic cattle of humanity we have now.
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.
Nailing it bud. I know old Vw and you know your stuff.
Circulatory....
Now pay attention, Uncle is teaching Stuff..
@∅
Great video,Chevy changed the oil system on the big block Gen 5 and later to prioritized main oiling.
I always get something for your videos, thanks UT
The hydraulic lifter in a 263 buick straight 8 works like a slant 6 I believe that was one of the first engines to have hyd lifters in mass production
Incredible educational video. I am really impressed with UT speaking and teaching skills. Dodge should hire him as a MOPAR historian. No lie 👍
Great engine basics episode Uncle Tony!
See this is why my uncle tony is the beast lol. Ya can’t find that information on another channel lol o and I won’t a tee !! Yep yep
Loving your vids mate. been watching for a long time. You are on the money with all you say.
Awesome video as always UT.
Another awesome video from the master 👍😎
Thanks Unk. I noticed a lot of this stuff but never knew the thinking behind it. Maybe sometime you could comment on oiling overhead cam engines. Great vidio
Never new why they called them side oilers. Learn something everyday.
Excellent video, can you do one on the cooling passages too.
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.
That would explain the constant rocker chatter in the straight 6 if it were true.
Very good I missed the part on how the cylinders and rings got oil somehow I'll watch it again.
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
Very good UT. Thanks UK.
I learned a lot in that video. Thank you!
love your videos, brother Uncle T!
How about a video on oil flow upgrade
And what are your thoughts on oil squirter's for the pistons
Thank you Tony, Very informative.
Awsum video Tony, now how about my 2002 88ci Harley , hehehe that would be cool.
This is why we luv ya's, cheers .
Great video, very well explained!
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?
Keep on keeping on
13:12 ( haha ) Uh oh. I was planing to put a crack scrapper on my slant six .