Head Gaskets - Myths Busted, History And Types For The Home Engine Builder
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- Опубліковано 29 вер 2024
- The head gasket is probably the most common point of failure in all internal combustion engines. We take a look their evolution, problem areas and what can and can't be done with them.
#Felpro #Blownheadgasket #Engines
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Can’t wait for the day when we see the “directors cut” of Angry Uncle Tony… it can’t be THAT bad, can it Uncle Kathy???
I recall way back in the dark days, we had a 1950s Morris that ate head gaskets. Dad made his own from brown paper and Hylomar. Never leaked again until we sold it.
Appreciate you doing this a third time to get the video out, was perfect. Although there's something endearing when there's a slight movement of the camera knowing your old lady is patiently stood there filming 😄
Uncle Kathy is a treasure. Props for listening to her Tony! We love happy Uncle Tony.
When i was a young kid I asked a flat rate engine mechanic at the local dodge dealer what the torque spec was for sb mopar head bolts. He said he didn`t know. I laughed as I thought he was joking. He wasn`t. He said he just cranks them down with a impact. He said I never had a come back. I will never forget that.
I've built more 350 and 305 Chevy engines then I care to mention. Never touched a head bolt with a torque wrench and never had a problem. Some were stock, some had speed parts. Never had a head gasket blow out because of it. I tighten bolts until they feel right to me. It comes with experience I suppose. Tightening sequence is way more important than torque specs.
I know 2 people personally that don't torque head bolts. Just gun them down with an impact. Both at professional shops too.. but they have no comebacks on the engines. I wouldn't trust it and want to cover my ass so everything like that gets torqued down properly. No need to take a gamble like that.
@@Whats-It-To-Ya I'm like that with Quadrajet intake manifolds for 350 chevys. There's always a couple of bolts on them that you either cant get to with a torque wrench or don't quite feel tight enough. I tend to do my pattern and torque most of them down to spec with my click stop and then by feel kinda match up the torque on those couple bolts using a regular wrench and hand feel. Has worked out so far!
Thank you for explaining all of this. I recently rebuilt and did initial break in on my 72 Cutlass S (original 350 block and iron heads) and was confused by the information out there regarding whether to retorque the head bolts. My Chiltons manual told me to retorque, but my Chassis Assembly manual made no mention of it. Im using the newer style of composite gasket to be clear. Thank you, have a great day.
We don't care if you get mad UT . We're going to listen anyway. Best teacher on YT. Thanks for sharing.
I have never ever before, heard Lisa's Hots Cakes head gaskets referenced to, in any sort of way, in an engine build tutorial of any sort! Only you, LOL!!!
Btw, it’s for a borrowed truck while they delivered apples to the wholesale market.
Spring tension of the bolts Uncle Tone. The factory torque setting stretches the bolts already.
Tony you never disappoint. Great video. Thank you
Was wondering about the whole retorquing thing when I put the B20 engine together for the 66 Volvo wagon you see in the little round picture. Every Volvo guy says you gotta retorque OR ELSE! It was my first and likely last vintage Volvo engine build so of course I did it. Kind of a pain in the ass, pull the rocker cover, then pull the rocker shaft to get at the bolts. Legend has it Volvo used a special socket to do this without pulling the rocker shaft, was pretty sure that's a load of crap, now I'm convinced.
Same issue with my '52 Case SC tractor. PIA.
Are you sure she said “go film yourself?” Back in the 80’s with aluminum heads and iron blocks we found on the Ford Escorts that the poor coolant was etching away at the heads and depositing the aluminum onto the water pump shaft causing the pump to lock up. The early Escorts were interference engines and the timing belt drove the water pump. Water pump locks up, engine goes bang. Aaaahh. The good old days
I remember those too
Whoa. Must have been terrible metallurgy.
I came here to say that 🤣
@@smncutler well you put two dissimilar metals near each other with acidic coolant and add electricity to it and you have electroplating
@@notmybleepingbike4812 carmakers have been doing it forever with great results. Ford just half-assed that one...
Ahhh the old ford 6.0 diesel, been pushing gaskets since Jan 1 2003.. still knocking ‘‘em out today, torqued to 210 ft lbs , head studs, doesn’t matter, throwing head gaskets out like they ain’t paying rent..
I still like Copper Coat no matter what. Something else about the fire ring gaskets, if you're using aluminum heads there are three distinct warm up temps, iron, aluminium and stainless.
UT, you ain't bad on the filming side but UK is better. Please use her as you can. It's also nice to have another point of view as well.
Please keep doing what you're doing 😆
One last thing. I've made leather gaskets myself. I'm reminded of the time my Holley 500 quit in Apache Junction, Az. at 2AM because the vacuum chamber gasket had shrunk after a year of sitting on my 58 Ford Tudor, 292. I used a 10 oz.ball peen and an exact exacto knife and was back on the road about 6 hours later!
Back in the early 1960s we learned about engines working on Chevy sixes. Took off the heads, cleaned the block and head and reused the same head gaskets. We couldn't afford new ones. Our torque wrench was a 3/4" box wrench with a three foot piece of pipe as a handle. None of us had a clue how it was supposed to be. We all were 13-15 years old. Backyard mechanics at best. But the engines always ran. The good old days.
Subaru, my friends, where aret thou
Maybe they hadda swing by the vape shop on the way here 🤷♂️
I knew what a WRX was before they went on sale in the USA.
@@MrTheHillfolk
Every. EJ. Engine. Garbage! Been around them long enough I can confidently say that.
Great job UT uncle Kathy will luv it👍
Great info on the gaskets and video quality is outstanding next comes audio yup you guessed it way to low. But again everything else was good.
Lisa Douglas's hotscakes were extremely tough. Sure, the excess could stand up to the pressures of the tractor engine, but they weren't edible.
That's galvanic corrosion. If needed, you could use impressed current or a zinc anode (sacrificial anode).
I really enjoy and get alot of great information from you thank you. Have you ever worked on a 84 6.2 diesel engine if so I'm really interested. Thanks
I usually end up using the antenna to hold the pushrods in place. It's half the reason its still on the car.
Since there is so much about performance on your good channel, I was surprised to not hear anything about how the various thicknesses of head gaskets mess with compression ratios. There are big differences among the steel shim, MLS, composite, etc. Many of us build up an engine and don’t take that kind of thing into consideration when having a head milled, etc.
With aluminum cylinder heads on cast iron blocks. The problem is called FRETTING, hot and cold cycles overtime causes the head to move on the block compromising gasket seal. Never cheap out on head gaskets.
Educational
Nice job Tony! Get er done! 💥🇺🇸💥🇺🇸💥🇺🇸
Do you believe in using sealer on your bolts? I never have with my Mopars....I'm doing an sbc right now. Seems the popular consensus says yes......
What about the thin semi-newish copper ones?
i built an engine not long ago where there was a compression leak into the water jacket. the fix was re-torque the head gasket. i am not saying re-toque is needed on all engines but in some cases re-torque is necessary .
A lot of engines spec torque to XX, XXX the second time, then add 90 degrees more to stretch the head bolt.
Good video, leave the Adderall alone.
Looks good to me
What are your thoughts on copper head gaskets?
Copper head gaskets, and o rings. Bolt once and wait for the bottom end to open up.
BTW, you did fine Uncle Tony!
Tell the idiots with die grinders to keep them in the tool box, clean and flat is the most important step in *any* headgasket replacement.
There was one more variation of the head gasket that was use with a 240Z Datsun which was turbo-charge. We borrowed from the diesel and placed a steel compression ring after cutting both the block and cylinder head for the ring to seal against. Much like the 'fly cut' on the Beetle cylinder heads and the steel sleeve cylinders. With the higher boost it did not blow by between the cylinders and the water/oil jackets were sealed. This indeed was a very special case for a special car.
I Wonder if Uncle Kathy was proud lol
With the boats its crazy. Wrong coolant will tot the engine. Then if you get any metal not bonded together to grounfmd to the water, and say you don't have a sealed wire connecter on your bilge pump, anything in contact with salt water will litterally rot off. Brass, bronze, copper, iron and steel as well as aluminum looks like it was eaten away by acid.
Nice video toni .
I remember the late '70s and '80s the Chrysler Vans the 318s used to piss coolant out of the back I believe it was right hand head the water jacket would fail and it every time you would rub the engine it would squirt antifreeze out of the right hand corner like a stream out of a hose
You sure Uncle Cathy said, “film”?
I thought that electrolysis starts making fluids acidic on top of the natural process UT is talking about
Tony where are you from? I'm from Montclair. MHS Class of 1980.
I hear when in a pinch overcooked pancake batter will do the trick.
Good info. But, you should never do a video with a tripod camera if Kathy is available for camera work. Just as an example: I think she would have got better views on the gaskets and had you show the shellac and copper spray. And maybe a gasket with only four holes for comparison.
Except for Big Block /426 Hemi Chrysler, all other Chrysler V8 engines have only 4 bolts per cylinder.
WE WANT UNCLE KATHY
A factual contrarian story. Rover took over the Buick 215 aluminium V8, they messed around with it, bored it, stroked it and eventually went from five bolt to four on the heads because it turned out to produce less gasket fails....
I remember seeing a head gasket dressing (I believe it was intended for a much older class of car) where it was a graphite paste. The idea was the heads and block can expand and contract w/o wearing into the gasket due to the graphite lubricity. Does it work? ... ¯\_(ツ)_/¯ ... Clean deck surfaces are good enough for me.
i think GM tried that.... kinda
.
the GM 3100 v6 used a graphite gasket..... and they pretty much ALL fail around 250K-320K miles
but its also an ALU head on an iron block......
better than iron head... alu block....
.
but you still have that slight back and forth movement over ~300,000 miles.......
@@kainhall Yeah, GM is famous with these. Like the Cadillac HT4100. Iron head w/ Aluminum block. That worked out well.
We miss uncle Cathy
Well I sure hope I wasn't wasting my time re-torquing. Regardless of the material used I always found I got back 20 to 30 ft. lbs. Even if it's just to restore cylinder distortion after using torque plates it makes sense to me. Attention to detail (eg. stock eliminator). After cam brake in is a perfect time as engine is heated but not stressed.
There is absolutely no way for you to tell 20 to 30 lb yield after it's already been torque good try ,I think you missed the point about most engines. He was talking about the basic engine. Not a performance engine or boosted. If you wanted to go to Toyota in the '80s you retorquing the gaskets head gasket every time you adjusted the valve's there would always be a loose bolt
@@jpdiscovers8670 From your comment Jeff it seems you've never tried a re-torque with a beam or dial wrench. You know for sure when that bolt starts to turn again. My mind set in making the comment was to squeeze the max out of the parts you've got. The Unk knows what I'm talking about. He brought forward the point of torque plates about a week ago. He may feel I'm splitting hairs but that's what stock eliminator was all about.
When your at the track and need to do the coat hanger wire trick but a coat hanger is nowhere to be found, the engine dipstick works in a heartbeat to hold the pushrods in place.
I'm glad you're getting better at filming. Not that I had any problems with your previous videos. That being said, we like Uncle Kathy. If she doesn't want to film, that's fine. But don't try to do everything yourself if she wants to participate. It's nice to have her camera skills and her commentary.
Personally, I blame squirrels.
Nasty little fuzzy tree rats. 🐿️
By the way, my first monster big block was a 383 with a cam out of the direct connection catalogue. It was called.a purple cam. There were others too. It was .695 lift, 340 degree and mushroom.tappets... Rev cam. It was psycho motor. I rallied off road in a 68 short bed power wagon. With factory 2" lift. No jeep or land cruiser could touch me. Of course no power.breaks, but.i could idle.up a 38 degree incline.with moguls. I took the doors off and a couple times walked along.my rig to read tje.lie of.land
Got.married and stupidly broke up the classic to put the motor in a satellite to roadrunner conversion. 25 years later.it was.in a speed.boat with only add the wet pipes. That was a bad ass psychootor.
I've never had a problem with metal gaskets sprayed with copper paint
Uncle Tony is a perfectionist with engines, Uncle Kathy is a perfectionist with video production! What a lovely combination for us viewers. 😁🤣
Tony is a very lucky man to have a women like Kathy by his side through thick and thin. They're truly a team.
Uncle Kathy, you're confusing me lol
Yes I think 🤔 my head gasket 1988 Nissan Pulsar NX OBD1 CHIP 🍟 😀 wide band 1.8L 120,000 failed.
UA-cam.com/user/fiddlercove microcosmic comments off
Walmart oil 🛢 😬 🤗 changes
@@johnshackelford6965 Walmart’s oil ain’t bad, I use it in my 2001 Saturn with 319,+++ miles on it and it runs like a champ! It also leaks so I ain’t wasting $30+ on a gallon of oil just to run Castrol. Wife’s car doesn’t leak and I use Walmart oil in it. Walmart’s service though? Questionable at best. But at least I can’t recall letting them change my oil and then sending me away with low oil. A 15 minute oil change in Tampa though did exactly that. Refused to accept that the filter has a separate capacity than the oil pan, and I had to go find a quart of oil to top it off, in Florida in summer, on a trip. Sounds like not that big a deal but it was when I paid for 4.5 quarts of new oil.
There was an episode of the Andy Griffith show where Andy hired an English chap to do all Aunt B’s house work for her. It made Aunt B feel useless. She actually enjoyed the cooking and cleaning because it made her feel useful, appreciated and accomplished in her contribution to the family.
Merriweather or Malcolm was his name I think the guy who turned out to be a drunk lol
@@dylanbarnes9191 Malcolm Merriwether, yup. Haha nope you’ve got it all wrong. He pretended to be drunk in order to get out of his agreement with Andy after Opie told him that Aunt Bee wasn’t singing anymore.
I remember watching that episode😄
@@dylanbarnes9191Malcolm Merriwether only became a drunk in "The Mummy" which was years earlier.
@@brucegilbert7243 his character in the show lol
Uncle Tony, keep doing what you're doing!
I watch your videos because you get to the meat and potatoes of engines!
Used to make gaskets out of leather and sometimes copper sheet. Back when I turned wrenches. Every once in awhile I'd get an odd ball industrial motor that was obsolete. That was farming though. Whatever it took to get it back up and running for harvest time. Always worked well though.
People definitely depend on us farmers for food and we have a short window of time to get it done. Any second of downtime is less production
Yes sir. Spent 10 years on a farm. Here in southern Arizona there is no "season" its always harvest season. Just different crops.
straight to the point and facts. Keep em coming Uncle Tony. I'll keep watching.
11:26 I remember hearing about certain late 90s Fords having issues with "false" check engine codes because of dirty coolant and the voltage it creates.
Check engine light on? Could just be dirty coolant if it's an old Ford.
Some more recalling , something about using ground straps on heater cores and other cooling system parts to try and calm down the electrolysis /voltage issue.
stray voltage will eat out a radiator or heater core in weeks ,Even when a new item is installed. earth out radiator , earth the engine earth the body.
I work on class 8 diesel trucks. They all have several grounds on the radiator and cooling system to TRY to prevent electrolisis . Red antifreeze is the worst I have seen in those engines.
yeah i agree the 5 bolts around each cylinder is way better i never pushed head gaskets till i got my first SBF
Thanks Tony! I have 3 or 4 used but perfect looking steel shim headgaskets for my Slant 6s, I've hesitated to use them but you can't get new ones so I keep using the thicker modern composite ones which they want actual money for and lower the CR after I go to all the trouble to try to get the CR up in the first place. I wish Cometic or somebody would hurry up and make some Slanty MLS gaskets
when i first started working on cars my mentor was working on a car with a severely blown head gasket. the question out of him was do you think all head gaskets are sealed perfectly? i said likely not. he said good answer. he went on to say there is no such thing as a head gasket that is not blown, it is just to which degree that it is blown.
Those Hoyt-Clagwell tractors were known for blowing head gaskets. Damn that Haney!
And the left front wheel falling off. Or was it the right rear?
Uncle Tony you are a national treasure!🇺🇸
Hate to tell you but Uncle Kathy filming does help the video quality. Also on the higher horsepower turbo diesels if you do not retorque a few times on a head gasket install you are pretty well guaranteed of failure.
"Go film yourself" has just entered my vocabulary; because I'm as sure that's what she said; just like that reporter heard "let's go brandon"
@14:00
Nice you pointed that out, Tony. Been beating that advantage up to people who don’t comprehend, or don’t understand that design advantage for years.
Fun fact: the first gen (49-64) Olds Rocket has 6 head bolts around each chamber- and I’ve never seen or had to replace a head gasket on one.
This made a huge advantage for early blower motors in the hot rod scene of the 50’s and 60’s- with that kind of clamping power, the early Olds engine did very well with forged internals in forced combustion arrangements.
We do miss uncle Kathy
If you watch "the straight eight challenge" series over on cold war motors, they reused a damaged head gasket from a Buick straight eight.
1:34 The First Trick I learned, by myself, was to use the oil dipstick to hold the pushrods in place when dropping in the rocker arms and shaft.
I was waiting for you to get to the importance of changing the coolant as recommended.. coolant (when it breaks down due to never being changed) actually turns into what's practically battery acid the eats at the metal in the gasket as you eluded to.. and as I'm sure you know.. you can even use a multimeter with the common (ground) lead on a good ground.. then place the positive lead in the radiator just until the probe touches the coolant (not anything else) and actually test for voltage.. depending on the reading you can guesstimate as to the breakdown of the coolant into acid.. furthermore... bad block grounds can cause the voltage/current to permeate the block and more readily and exacerbate the breakdown of the coolant into an acid... a lot of newer cars are far more sensitive to even the slightest voltage drop so one would likely notice other issues that could possibly lead them to properly diagnose such a condition.. but being on older Master Tech and Diagnostician and doing a lot of hot rodding and racing throughout my years i can say that older cars are a little for forgivable to slight grounding issues and that would speed up the decay of head gaskets.. I've seen it myself in my experience.. great video as always brother.. keep up the great work...
💪🇺🇸🇺🇸💪✌👍
Yep co worker had that issue on a mid 2000s ram. Replaced the water pump and radiator twice before he found out it was electrolysis killing them.
You know what Tony? 50+ years of torquing bolts and I still learn something from you fairly often. Thanks.
I really appreciate the time you spend on how to lay out the information so it is delivered in the best picture it can be imagined and observed. 👌🏻
No squirrels yet
Your vider style matches your personality perfectly. No fancy intros, outtros, promos logos just a crapton of knowledge, technology, technique. A venerable cornucopia of information then bang , see ya tomorrow. They always look like they were done in one take.
The best way to shoot videos. Cram knowledge, trim the rest.
You rock man, mechanics like this ladies and gentlemen are a dying breed, keep learning how to fix and repair your own car and itll be much much easier in life.
When Uncle Kathy threw the camera at you, are you sure she said film? Keep them coming Uncle Tony.
I VOTE TO BRING BACK KATHY!!!
G'Day,Tony,and Miss Kathy,,Long time ago we would go camping (IN STYLE),we had a Clay putt putt engine, water cooled, running on the river bank and would run a 3 phase alternator and water pump for the HOT Shower,,any way this week end we blow the head gasket,,(F&*K) so in to one horse town with no prospect of finding a new Clay gasket,( I mean the motor has to be made in the 50's) Brought a pak of breakie cereal and some fine stainless mesh,,and made a gasket from carbord and stainless with Muffler putty,,now that was in the 70's,,and the old Girl is still running to day,same gasket,( I mean if it ain't broke,)
Great video. But. What did you use on the 383?????
Thanks @UncleTony'sGarage! What about choosing head gasket thickness to affect compression?
Let her just shoot the damn thing! Who suffers when the parents fight? Us,the children and the "art"!!! I wondered why there weren't close ups on some videos that needed it you normally automatically had with Uncle Kathy's superior camera work!!! Y'all are a team, dig it?!?
It's good for your ego that you can kinda film,put camera on tri-pod,push play,stay in frame,yaa. But having your better half doing her part lets the teamwork become the dream work!
Laurel isn't shit without Hardy, Moe by himself is just that Moe,nobody to smack,slap,poink their eyes out,talk to,Batman in the original series without Robin,wasn't much either, the Lone Ranger without Tonto and or Trigger,is fukt!!! Fred without Barney, Rocky without Bullwinkle, Sherman without his boy Peabody, Howdy Doody without Buffalo Bob, Scooby without Shaggy,c'mon man, totally fukt!!! I can go on, but you get the point, Wally without his cockroach buddy. Yes you can, but it's better with 2! I mean c'mon man, you just can't send Uncle Kathy to the unemployment line!!!!
uncle tony
first time i saw it thought this guy looks like my uncle, so i did write a comment; hey uncle,
later I discovered yor channel is uncle...-- i said to myself wtf..no joking
I just rebuilt a flathead willys. I ran and had a few heat cycles. Used a copper head gasket. I planed to re-torque at 100 miles. I had maybe 20 miles. I had bubbles in my coolant. I re-torqued and the gasket sealed. I now have hundreds of miles. Nice thing with a flat head, I dont have to remove anything to retorque.
I am also rebuilding a flathead willys and plan to use a copper head gasket. Maybe this is a dumb question, but did you use the copper spray on your copper gasket?
@@joshuamuckey4667 , Yes, I called the manufacturer and they said a thin coat both sides is recommended. It turned out my problem was with the head corrosion at one of the water ports became too close to the cylinder area. I had to get a new head.
my head gasket has 30 years old in the engine,,with 280.000 kms do you beieve it?
i think the secret is temp and a clean colling sys, always use a good concentration of green coolant
Yep. I had that exact same thing happen on my old '89 Volvo. The gasket leaked coolant slowly in between the 1st and 2nd cylinders into the 1st cylinder and etched the block. Because it was a turbo and thus low compression, it still ran pretty good and I didn't know I had a problem until it was too late. I would have had to had the block welded and then resurfaced to repair it which just wasn't worth it.
I'm assuming you're talking about a b230ft, in which case you could have bought a long block for like 400 dollars. I sold a 200k b230f with an m46 on it with the harness and accessories for 350, but it was an 85 with the thin rods. I boosted my NA 90' 240 and they hold stock boost fine and have a ton of torque with the extra compression
Wasn't worth it? How expensive it was? Its an backyard job that any shop with an lathe and an welding machine can do(you see guys in rural india doing it with even less things). Seems like such an small thing to comdemn an engine for.
@@kinsmart7294 costs about the same to just replace the motor, which can be done with pretty basic tools and a harbor freight engine hoist. Prices have doubled on a lot of redblock cars and parts the past 5 years, but it's still one of the most affordable RWD engines left, and they've got plenty more potential than people give them credit for.
Rods and bearings alone are enough to get these cars into the 500hp range if you start with the right model year block, like post 93 squirter blocks. My car was so slow it hurt when I got it with around 15 second 0-60, but just with a manual, weight reduction, a 3.73 diff, and 5psi of boost, the car is about as fast as my old S60R, which was a 2.5 5 cyl on 15psi
@@StreetForged The situation is different depending on the country for better or for worse. In my country engine swaps are rare(its also an pain in the neck to legalize), so 99% of old cars have the original rebuilt engines, with bored out or sleeved cilinders.
@@kinsmart7294 I could move the #1 piston back and forth with my fingertip.
Subaru had a problem because of a coating they used on the head gasket that turned out to not last longer than 15,000miles in many instances. So be warry of mls gaskets that are pre coated you dont know how good that coating is.
Oh Uncle Tony & Ultra Kathy, Thank You So Much for this (and all of these solo) Video's! As a newer you tuber, I just did a video on taking apart a BBF and how I go about it. I was in the Groove Man! It was one of my BEST feeling shoots! I go to upload it to edit it........ I SHOT THE BACK OF MY HEAD AND MY BUTT! The mic wasn't plugged in so NO AUDIO!!!!! ZERO Nadda.... nothing! Can't re-shoot it, because I don't have another (never been opened up) engine! RRRRRRRRRRRR!!!!!!!!!!!!!!!!! 3 hours of completely un-usable footage that can't be repeated..... ug.
This Video Stuff is harder than I thought it was and Ultra Kathy is beyond GREAT!
I rebuilt a vintage Coventry Climax engine some years ago and all of the gaskets were made of leather and assembled with a thin layer of grease, It still runs today and is fitted to a early Morgan 4.
i tried pig leather for the thermistat hsg...would last about a year..looked really cool
Coventry Climax were used in early 60s F1 cars with dual Weber DCO/SP carburetors--then mechanical slide throttle injection soon after.
How bout headbolts??? Once upon a time we just reused what we had lol!!
On the old ones I like to tap holes use copper antisieze with grade 8 washers under bolt head get a real smooth torque reading. I Kno certain motors like a 3800 u use copper spray on head gaskets
Great info on a topic often overlooked!
Video on topic starts at 4:13 for any one who wants to know
HAHAHA I feel ya
Good job. This kind of information is why I subscribed. Carry on.
One of my favorite things to learn about is the engineering that goes into the internal combustion engine.
Those were some clever people!
From a performance perspective, all the little details add up and just like many engineering projects, the final product is greater than the sum of it's parts.
A symphony of moving metal and fluids, gasses, flexing and strain... it's all calculated together! I just love it!
Great stuff Tony!
Angry Tony would be good to see occasionally, haven't seen you throw anything in a while!
I really enjoyed this informative video on the history of head gasket construction. Nice 👍 job Uncle Tony!
Gm had huge issues from the late 80's into the 2000's from dexcool breaking down prematurely then eating the headgasket, pitting the aluminum heads causing antifreeze creep through the MLS headgasket contacting the headbolts ( northstar V8), the small blocks and v6's had all kinds of intake manifold gasket antifreeze leaks. Then there was the silicone separation issues that clogged radiators and heater cores. If you run a vehicle with any form of extended life antifreeze and its not clear and brightly colored when poured in a white Styrofoam cup you better get it changed out, it does not last as long as claimed and once beyond 100k miles you should drain and fill the radiator every 30k miles or two years.
I never retorqued the heads on my flathead, those replacement gaskets were post-asbestos, though.