Different Types of Timing Mechanism used in Cars | Explained

[@MyerShift7]

I, not mechanically trained, have long held the opinion that timing gears, weight and noise aside, would logically be the most durable and reliable setup.

[@moonlee9898]

every wet belt fails immaturely, costs you thousands' of dollars to rebuild. AVIOD WET BELT at any cost. (HONDA 1.0t, PSG 1.2t, FORD 1.0t etc.)

[@stevebayross7248]

Not every belt fails prematurely but your warning is otherwise valid......

[@BruceDragon-sf1tr]

Does Ford and Honda engine have a similar set up?

[@1crazypj]

@@BruceDragon-sf1tr Honda have been using wet belt in industrial (fixed rpm) engines for almost 30 years. It's probably why they thought it would work in automotive?

[@lukalevstek7851]

Wet belt is stupid idea. Belt and oil don't like each other.

[@flashnmb1]

GM’s 1.2 liter 3 cylinder engine has a wet timing belt; disintegration in oil clog oil p/u starving oil, belt breaks impacting valves. Special tools for cam phasers and placement make this a pricey maintenance & won’t achieve service intervals. Ford already proved this is a bad idea in eco boost engines; making Trax & Envista throw away vehicles.

[@mrgtmodernretrogamingtech6891]

Timing Belt : Quiet and Light Timing Chain : Durability ... Timing Gear : INDESTRUCTIBLE! MASTER OF WAR!

[@lordberly]

Hell yeaah DISTURBED 🤘🏼

[@mrshafiquemohammed]

Timing gear are the best had a taxi done over half a million still running

[@DrivingInFocus]

Belt fails before the engine because the engine lasts over 300,000 miles. The chain lasts the life of the engine but also needs to be changed at 180,000 miles? So, 3 belt changes, and it outlasts the chain. The belt is also quieter and cheaper. Also, having things inspected while having a belt replaced is a good idea. The water pump gets replaced, usually with the belt. Engine casting is less expensive since the belt is outside of the block and head. Round seals are less likely to leak than a timing cover gasket and are much easier to replace. The belt should be DRY, because a WET BELT is subject to acidic oil after it has been diluted with fuel and oxidized. The WET BELT can disintegrate and clog the oil pump pickup, losing oil pressure and killing the engine.

[@wilsonsmith95]

Timing gears > all others!

[@nferraro222]

Nice catch, on the "align honing" problem with gear drives, but IH used gear drives, in their gas engines for years, with no wear issues. Not exactly a fair comparison, since they're commercial powerplants, built to take tremendous abuse, but I think any thermal issues would still show up. Ford 300's are also extremely tough. The real issue was noise - it's very, VERY slight, but people hear a noise they aren't used to and they freak out. Buick had to discontinue it's amazing 2-speed torque converter, because owners got nervous about the slight whining noise.

[@nickpalance3622]

I discovered what a timing belt was (and a non-interference engine was) when mine snapped 90 miles from home while on summer break in college. A storm approaching but luckily two shops were nearby. The second one acquiesced and squeezed me in. I got home the same day. A year or two later it broke again and block from my house. I knew the sound and feeling of what happened right away. Wasn’t long before my transmission main seal went and we got rid of that MOPAR car and got a Corolla. 😊

[@Jack3x4]

Please also compare Camless and timing belt free engines to these. It would be interesting.

[@bowez9]

Yes timing gears are so bad that the Ford 300 can run 1 million miles without issue. Mine is at 600k miles. No chain or belt will do that.

[@stevemisfit1]

There are old Hondas out there with 500k easy on a timing chain lol but i get it

[@bowez9]

@@stevemisfit1 yes and Honda requires the valve clearance checked every 6k miles. Personally I don't think of a 2001 as old, especially when can be compared to a engine from 1965. I know 01 is over 20years old but hard to think of it as old, just like 90s cars are now classics.

[@LevelUpEngines]

Amazing video 📷

[@bobstevenson3130]

I still cant believe Ford decided that a wet belt timing system on a turbocharged interference engine was a good idea

[@fawzisdudah8511]

Camless Engines .. I'm waiting for this episode ❤

[@luciansiclovan7123]

Rotary valves!😉

[@fawzisdudah8511]

@@luciansiclovan7123 Or electro pneumatic valves

[@bobbysenterprises3220]

You just want to see if he can pronounce Koenigsegg

[@bobbysenterprises3220]

​@@luciansiclovan7123or slide valves.

[@gregorymalchuk272]

Chrysler MultiAir? Sort of camless on the intake valve.

[@LeadStarDude]

Chain is better than belt, but gear to gear is best. I have even been considering swapping my chain setup for a gear to gear setup. They do sell kits for my 5.7 hemi.

[@thatcarguy1UZ]

My preference, if the engine has the camshaft in the block, (pushrod, OHV design) would be for timing gears. If it's an overhead cam engine, my preference would be a timing chain. However, a lot of newer vehicles are having timing chain failures where the predecessor engine, which was a timing belt engine, actually was more durable and reliable. A timing belt is not my first choice, but some of the most reliable engines produced use a timing belt. A lot of Honda and Toyota 4 cylinders, for example. I just think that with any engine, but especially a timing belt or timing chain equipped engine, it should be built as a non-interference engine. If you manage to get out of time with timing gears, then something pretty catastrophic has happened. But even on a well-maintained engine with a belt or a chain, you could have a bad part like a tensioner or idler fail and cause the engine to go out of timing, which then ruins the engine when the pistons hit the valves inside the engine if it is of an interference design. Then, we get to the wet belt design. No. Just no. Absolutely not.

[@thereasonableconsumer]

Timing belt = 💩 Timing chain = 🫳 Timing gear = 👍

[@Xayuap]

¿what about push rods?

[@nickayivor8432]

KNOWLEDGEABLE,The Engineering Post Very helpful information tutorial video 👍 From Nick Ayivor from London England UK 🇬🇧 ⏰️ 16:11 Good Afternoon. 🌧 🌦 🌂and more ⛈️ ☔️ 🌩

[@yogibarista2818]

Helical gears offer a reduced noise level compared to spur gears, trading off a small amount of efficiency.

[@brianklamer3328]

This was a very informative video!

[@theraildynasty_]

That camshaft which is located near the crankshaft is called a pushrod engine

[@oml81mm]

Vertical shaft, with bevel gears at each end, is a good solution. Oldham couplings can be included if required as can a 'hunting tooth' to even out any wear if required.

[@taladiv3415]

Why didn't you mention in the video the severe disadvantage of the wet timing belt?

[@VGHCX]

Is it accurate to say that OHC engines have not set finger follower/rocker arm ratio due to the fact the lobe of the cam begins to open the valve at one location on the follower and ends elsewhere?

[@antonparks9147]

What timing mechanism is in a 92-97 Ford Crown Victoria?

[@geronimowindow]

Timing chain

[@alkennedy1124]

You should change timing belts 50.000 or less miles , especially if you are in a dirt dusty landscape, timing gears, I have nerve change them, and timing chains I ,have never changed, so it’s all up to how you change your oil , 3 ,000 miles or less, and that will save the chain and gears ⚙️, last longer, belts are and expensive easier to change, thanks BigAl California.

[@crazydigger4931]

I would prefer belt. They are lighter, cheaper, never stretch and therefore never lose timing, and if you have no oil leaks and change belt in time - it won't cause any problem. Worn chain or tensioner require expensive repair. Especially modern one row chains are a crap.

[@rdmineer1]

Direct mesh timing gears are the most durable, but not practical in most modern, high efficiency dual cam engines. However, some creative engineering in the early 20th Century employed geared shafts to operate dual overhead cams. Yes, they did. Chains are usually equally durable, but in OHC engines the plastic guides often fail early from heat stress and wear. Avoid a wet belt engine, no matter who made it. I prefer the dry timing belt. Modern construction is as reliable as tires. They are relatively inexpensive and accessible without compromising oil containment, and if replaced timely with tensioner and idler will rarely fail. Only use an OEM kit.

[@crazydigger4931]

Not mentioned - gear driven timing via conical gears and a shaft. Known since beginning of 20th century and used especially in aircraft engines. Also - in diesel engines of V-2 family, all Russian tanks starting from T-34 and until now.

[@The_R-n-I_Guy]

He showed one in a motorcycle engine I believe. Although he didn't speak about it that I heard

[@1crazypj]

@@The_R-n-I_Guy Yep, Ducati bevel gear OHC

[@jonell1425]

I always thought this would be a good idea. Didn't know anyone ever did it...

[@MatsModén]

Gear driven are the best !

[@DuRoehre90210]

In theory, a good overview. BUT: there are special cases. a) Certain known car lines from a German manufacturer was/is famous for using (supposedly cheaply produced) single roller chains, leading to incorrect timings LOOONG before a typical belt would require a replacement. So they are not a universal solution if not implemented right. b) belt-in-oil has never been a good idea for various reasons, like requiring special (expensive) oil, needing special belt materiasls with some protector finish (which is typically some PFAS which is eventually not good for the environment), and the permanent danger of contaminating your oil supply system with lots of rubber dirt very quickly whenever the sealing gets broken, needing additional cleaning job inside of the motor.

[@kayrams1792]

From timing gear, timing chain to timing belt. All I hear is that the downgrade of quality of car parts is because costs reduction. Timing belt is the owner nightmare. Timing chain is better but timing gear is great.

[@Tapped-o9k]

Why is the belt bad?

[@IxhazeGT]

Ive had both and I prefer a belt. Chain is expensive to fix if something goes wrong.

[@miendust]

​@@Tapped-o9kBelt breaks easier, needs replacing and has no advantages other then cost of manufacturing.

[@justawhitenigga]

​@@Tapped-o9k because you have to change it at 100.000 km. A timing chain, if you change the oil at maximum 10.000 km, can last up to 500.000 km without issues. And the timing gear is the strongest.

[@householdhacks]

@@Tapped-o9k the belts break after only 80k and destroy the engine beyond any hope of repair

[@theEVILone0130]

My quattroportte has triple rollers from the crankshaft to the idler and double rollers to each head. And definitely stronger than silent chain or belts.

[@cost4_music]

I have a VW Fox 2019 with 39k km. Should I verify the timing belt in the next service due to time even if I'm not experiencing any problems with the vehicle?

[@udpbooter]

I would change it whenever it’s due for service you don’t want the belt to snap because it gets to old or worn down though if you really need to you can run it until the belt starts to make a noise then you really need to replace it

[@IxhazeGT]

I wouldnt worry about it until you're close to 160k km. Thats about their life expectancy. I am in the US and most belts average around 10 - 30 usd

[@Henrque123]

You should DEFINITELY check an external belt from time to time. That's why we have TIME and KM/Miles service. Belts can and will wear differently, so in areas with plenty of contaminants or any unusual things happening can lower the life expectancy.

[@justawhitenigga]

Every 50.000 km or 5 years is the best interval to change a timing belt. If you have 5 years and 40k km, you have to change it.

[@cobbvd]

@@IxhazeGT I have 2 Citroen cars with 1.6 ltr diesel engines. The instructions say that the timing belts are replaced every 10 years or every 160,000 km. I think the manufacturer knows what he is writing. The mileage of one car is 120,000 km, I think I will change the timing belt next year. At approximately 130,000-140,000 km mileage. I am in EU.

[@Fortnite_Frost_Clips]

Can you use timing gears with a dual overhead cam engine?

[@bobbysenterprises3220]

I'm sure it could be done. Look at the Deltec. It had three crank shafts geared together.

[@Bennie-l9f]

@@bobbysenterprises3220 absolutely it can be done. General Motors locomotives for years have used strictly gear driven overhead cams. Belts would never hold up under these conditions and chains on locomotives are a thing of the past. I am not certain about GE locomotives but in the past Baldwin locomotives use the chain. These engines were built back in the 50s of course some wise guy is gonna say we’re talking about cars not locomotives. That’s true, but it’s also true locomotives are like they have already bunny.. They just go and go and go and even today you will find locomote is built in the 50s still in use of course they’ve been overhauled numerous times but not because of a broken belt or chain. Just clean the parts, gears included, and reassemble the engine - - good as new!!

[@Pgan803]

Most important is fuel economy and ease of Maintenance. Belts and Chains seems easier to change compared to Gears. Cars meed reqular repairs maintenance its really a complex machine

[@j.m.5995]

Lightweight balanced timing gears for the win

[@DexMaster881]

Timing chain's primary role is to Synchronize and power all spinning correlated parts. Timing belt's primary role is to be changed within a certain time period.

[@vigneshtube1936]

Timing gear not have maintenance

[@lordberly]

wrong, it still needs to be checked from time to time but not as often as timing belt

[@WyattHabel-f8n]

@@lordberlynever heard that before. I work on diesel's every day and that's not something we do. They last the life of the engine every single time without ever being touched

[@xDUnPr3diCtabl3]

@@WyattHabel-f8nWrong.

[@rachidlamzougui1683]

Timing chain is better and durable, while timing belt is quiet but not durable. Timing chain are attached to sprockets, while timing belt to pulleys

[@bobbysenterprises3220]

Some chains have change intervals. When a chaon is on an ohv motor it usualy isnt an issue. But as they get longer it becomes an issue for example a two or four over head cam v6 or v8

[@gerhard6105]

My Subaru has a chain. Still okay since 2006 (new from factory). My 1940 Opel has gears. Also still good and still original.

[@mattdonna9677]

Ford 300 inline 6 cylinder, mine is 44 years old, no complaints.

[@yhun1212]

벨트랑 체인은 많이 봤는데 기어는 직접 본 적이 없네요

[@kdw75]

My Dodge uses gears, my Fords use multiple chains. Chains can stretch, gears don't.

[@GreenRobotCat_R4702]

Chains all day baby!

[@Westernriderkidboy_V18]

I don’t think timing gears are in most cars I thought they were in C10 engines and up and in some Cummins diesels and catapillar engines and diesel train engines and semi engines

[@RePeteAndMe]

I don't know much about wet belts, but if I owned a vehicle with one I'd add a bypass oil filter.

[@hagopsarkarian]

Just simply avoid having a car with a wet belt driven engine.

[@ronsmith7739]

I would prefer timing belt as they can be adjustable, low noise and must be wider to hold more power.

[@plaen.]

So that's why my renault sounds like a propeller engine? A chain?

[@MASLOV-OLEG-I]

хороший канал !. удачи. 👋👋👋👋👍👍👍👍👍👍👍👍👍💨💨💨💨💨

[@iee4g6]

Timing gears can never do you wrong, noise concerns be damned!

[@paulawalach1770]

Hello, I own a 1967 chevy van I got over 300k miles out of that 250 straight 6 . BECAUSE IT HAD A TIMMING GEAR. The auto makers went to timing chains, then timing belt to practice their predatory engineering in oder to keep the motoring public in economic slavery. I know these old vehicles and work on them modifying the body parts with stainless steel. A bad repudiated metal with auto makers. Can you buy a new stainless steel vehicle no matter how much you want to spend? Why don,t auto body shop personal aquire skill sets to weld stainless steel to regular steel using a 319L electrode and tri mix shielding gas? They are in my opinion in some kind of TRUMP CULT.

[@GhostV8]

FYI some engines have both a belt and chain.

[@jackdeltr9701]

I’ll keep my old truck with its slow over square low compression gear drive timing and simple magneto

[@russellstyles5381]

Why do chains use hydraulic tensioners? Sounds like a really bad idea. Why not a spring? Even when they are working correctly, the tensioner is not working during startup.

[@Pleksilasi]

3mz-fe is an interference engine for example. Double check all info you hear here.

[@theEVILone0130]

I'll stick with a double roller chain. Unless I'm racing and I'll stick with gears then.

[@DJKjo007]

Timing belt is not bad as long as the engine is non interference type

[@MirembeRuth-h1j]

Am like to know even in motorcycle had engine timing

[@JAKE-em5xr]

I think you didnt drive a car with a timing belt. When belt is already weared off you hear it very much.

[@PaulCarr-d4l]

Nissan too

[@yahyayarim8518]

Türkçe altyazı desteği lütfen! Saygılar, başarılar…

[@WarChallenger]

If the manufacturer put a belt on it, they WANT your engine to fail so you have to pay out the rear end to fix up the front end.

[@The_R-n-I_Guy]

The engine in my 05 Civic has a belt. I don't know when it was changed last, so I got a timing belt and water pump kit along with some other gaskets and seals. I'm not a fan of timing belts. I've changed a few but this is the first one I've personally owned. I will never buy another vehicle with a timing belt. Or any modern vehicle for that matter

[@carlosacevedooyanedel]

Timing Chain wins

[@jayartz8562]

Depends on who's designed/made it.

[@oml81mm]

Vertical shaft and bevel gears does not stretch with wear.

Gears, then chain, and then belt. Look at racing. Use mostly gears for timing.

[@apemoon1731]

Timing chains were great until they made them flimsier than the chain on my push-bike.

[@tyronecuffee3888]

Anybody ever had a timing chain break? ⛓️‍💥🤔🤔

[@vinnygraziano1318]

Thats actually not entirely true. I've had many timing chain driven engines with a plastic valve cover. 2003 Mercury Sable 3.0L DOHC, 2017 GMC Acadia 3.6L, 2023 Mitsubishi Mirage 1.25 L

[@jefferypease3920]

Electric valves oh, what could go wrong there?😂

[@ryans413]

First thing I said to.

[@rdmineer1]

A failed ground strap is enough to grenade your entire engine.

[@doneB830]

Gears are best but have weight and are expensive to manufacture, belts are light, quiet and reliable if changed when required, chains can be good and get high miles without maintenance if they are designed well with quality products in the first place so the average buyer has two choices belts or chains and to know where you are look at the history of the particular engine and make a choice on that and never, never buy a car with a wet belt. Just my 2 cents after 40 years as a mechanic.

[@Dytopjewa7631]

Timing chains durability,depends on timing guide’s durability..

[@thepreserver83]

Using timing gears is almost impossible for error to adjust because is only 1 single way to mount the gear into shaft. Every gear have little sign, by adjusting those - gears are adjusted 100% without any error. Needs only simple understanding of mechanics and everyone can do it. Even is not needed to change them in lifetime. Are part of engine itself. Simply they dont break. And no, gears are not more expensive than chains or belts, when taking into account the liftime if gears, compared to price and lifetime if rollers for time belt, tension holders, bearings, chains or belt itself. Todays cars are build to last 100-150k then throw them away. I dont understand (and maybe i never will) why peoples buy new model when the old one still works fine. More expensive does not always mean that is better product. Even newer models are less prooven than older ones.

[@ken_eszu]

❤

[@silviannistor]

It s about quality after all. Take for example Bmw. In the 90s, their chains were indestructible. When they started using bycycle chains for timing in the 00s, you absolutely had to change it before 200k km

[@KubanKevin]

Chains are the way to go. That’s why belts are almost extinct

[@rosskj9187]

Aside from in a vast amount of cars. Seriously they are just about as common as chains. Also chains have service intervals too, they suffer from stretch and often the guides can fail. They also increase shear in oil degrading engine oil quicker. Belts are easier and cheaper to replace than chains and if your wanting to keep the vehicle after it has reached 120k miles you are just aswell off with a belt as a chain.

[@vaibhavdubey8647]

Timing chain always

[@ryans413]

The best engine in my opinion is the OHV engines. They are very simple and last a long time with proper oil changes. Plus you don’t really have a timing belt to worry about. Plus OHV engine are non interference so if the small chain dose break your valves won’t be damaged.

[@bobbysenterprises3220]

Changed the chain in my jeep 4.0l because I had the cam out. New chain was about the same as the one I took out that had over 200k miles on it.

[@zaffarfaridoon363]

Chain is good

[@mrshafiquemohammed]

Wet belt is a disaster 😂

[@dimitrimotor2861]

old wit no belt in oil of no belt

[@bobbysenterprises3220]

Ford says "hold my beer" while they run the oil pump off a rubber belt all bathed in oil

[@antor.j.medrano]

I like timing belts for gas cars.

[@1crazypj]

I'm very familiar with the V-4 Honda motorcycle's and hate them with a passion. I don't care how good they became in later years, the early ones were complete shite with numerous problems. Even the gear drive VF750 wore out cam gear 'cartridge' really fast (never mind the bikes where Honda 'forgot' to harden the cams) I started at a Honda dealer workshop in late 1970's, moved to a Suzuki dealers 1980 and worked on V-4 Honda's at least once a week for several years. Moved to America 1999 and still worked on junk V-4 Honda's (mainly V45 Magna) Seems I always get the worst designed motorcycle engines at dealers (doubt anyone else understands them?) Kawasaki used silent chain so lightweight it was completely worn out in less than 20,000 miles (600cc and 750cc) and if not changed would break before 30,000miles. Honda wt belt in industrial engines isn't rubber, the one I looked at was bright blue 'plastic' of some kind. Solenoid valve operation requires a high amperage for high rpm applications. I know there have been developments in the last 20 years (you used to be able to go directly to development website, around 2005~6) Apart from that, this was a very good engine primer for camshaft drive types

[@lucpaquin6025]

Chains are ever more reliable and last for the life of the engine, belt is not reliable and needs to be replaced every so many thousands of miles.

[@Nickrioblanco1]

Timing belts suck.

[@bowez9]

Toyota does/did make interference engines, that have cost may a owner a cylinder head and pistons.

[@GabrielMcDuck]

camless enegine Koenigsegg gamera 3c

[@glennanderson6052]

Dry belt ok easy to change wet belt not to good expensive to change oil life critical. Chain better yet gear the best.

Belts are quieter.

[@markorr1874]

GEAR DRIVEN

[@JC-gw3yo]

True reliable engines use GEARS.

[@Latuya-y1n]

Timing gear ⚙️ best semi truck go about 3 million miles with good mataince in them Detroit diesel 14 liter inline 6 series 60

[@stargazer2504]

I wonder how many people would rather pay upfront the "extra cost" these car manufacturers claim they have when they use a timing belt that needs replacement at 100k vs a timing chain that will never need replacement? I just spend $2500 on my 2017 Acura RDX changing the belt. Had it been a chain that never needed replacement, but the initial cost buying the car been $2500 more, I would have paid increased price at purchase, knowing the engine was solid for the life of the car.

[@russellstyles5381]

Would not have been $2500, more like $200. Most of the $2500 is labor, plus the water pump.

[@tdobson888]

Timing belt is not more reliable than the chain and cars today still use timing chains and today's timing chain will outlast a belt 50x over as long as you change the oil the biggest advantage for belts they are more lightweight

[@TheMissingxtension]

Timing chains make engines disposable, nissan from qr and up engines become useless after timing chain guides problems because of the cost of engine removal and timing chain replacement. The ford OHC cost 4x than the pushrod chain to replace. There are no benefits to timing chains, now engines don't have woodruff or key on the crankshaft to pulley either. You can thank the Germans for timing chain problems. Then you also have chain problema on all CVT, not a good thing at all.

[@The_R-n-I_Guy]

So they went from chains to belts. Then back to chains. That tells me that they know belts are garbage. Wet belts are a stupid idea. Never buy an engine with a wet belt!!!

[@johngamer6255]

Every toyota is non interference? That's just straight up wrong Also belts are way easier for maintenance because it's way easier to change

[@jimmylynch08]

What up with the robot voice

[@urgaynknowit]

This Ai voice tho 😂

[@mervinsimons1065]

Timeming gears on indian cars they r noisy but timming chain should be changed by one lack k/m

[@samstewart4807]

A WORTLESS VIDEO. YOU SPENT 30? SECONDS TALKING ABOUT ELECTRONIC VALVE CONTROL - OH WELL

[@nahuriratom8594]

Belt system far better

[@justawhitenigga]

No, never!