9 Craziest Engines You Can’t Buy Today

[@alphonski1]

The first engine was two 6-71 Detroit Diesels (6 cylinder, 71 cubic inches per cylinder), mated to a reduction gear for marine applications.

[@rhondal1]

The first engine was a Detroit Diesel twin. We had twins and quads for mainly government use. We used inline 6-71's. I worked at Detroit Diesel for 32 years.

[@bitterdrinker]

The twin Detroit 6-71 powered variants of the Sherman and M10 tanks during WW2. And I believe Higgins boats. The Chrysler A57 is not in the video disappointingly.

[@dieselman2000]

2 valve heads with exposed fuel rails...ancient....

[@aerialcat1]

I saw those unmistakable Detroit Diesel green valve covers on a ‘flathead’?

[@taomicioli]

@@bitterdrinker it was a turd... just like the flathead 6's they were derived from... and engineering exercise..

[@timheersma4708]

I cut my teeth driving 71 screamers at a bus company in the late 70s...damn I miss that distinctive sound. They were virtually indestructible too :-)

[@RobynTapps]

That bike doesnt have a rotary engine.... Its a radial engine from an aircraft.

[@scootergeorge9576]

Correct. With the rotary engine the crankshaft is stationary and the cylinders revolve. Quite conman in WWI aircraft like the Sopwith Camel and Fokker Triplane.

[@vrodhogrider2735]

You beat me to it.

[@nigelmitchell351]

@@scootergeorge9576 Now that would be a sight to see and a challenge to build!

[@kevintucker3354]

Scooter George It’s crazy to watch the cylinders and heads spin with the propeller!

[@bengrizzlyadams6187]

Sounds like a plane

[@nicktrask4717]

I like the sound of that engine

[@neighborscomplaint]

I'm looking at the "Chrysler 5 bank" and laughing at the GMC superchargers in plain sight.

[@rayg9069]

Yep, it's a pair of 6-71 GM Diesels mounted to a common gear case, they were used in tanks possibly Shermans?

[@CaberFeidh]

That first one is the twin-671 pack that powered the M-10 "wolverine" AT-SPG. Dodge had nothing to do with it... which should be obvious, since it actually runs

[@aussiebloke609]

Thanks. I kept wondering why they looked so much like a couple of GM 2-stroke diesels... now I know why. :-P

[@stevecadman137]

Motorcycle has a radial, not a rotary engine. Geez there's a lot of mistakes in the captions for this vid

[@michaelh2034]

Exactly correct.

[@timmayer8723]

The Rhone rotary engine was built in France back in the thirties. The entire engine and propellor assembly spun around the crankshaft.

[@crusherbmx]

That chopper with the RADIAL engine actually looks good.

[@kenevans3659]

The first engine is a WWII era twin General Motors Detroit Diesel 6-71 tank engine. Or maybe they were used in marine applications. Like the Higgins boats that landed at Normandy. Can't really remember. I do know that the landing craft engines in Saving Private Ryan definitely sounded like screamers, and they were pretty historically accurate in that movie. Two stroke diesel. Twelve cylinders at 71 cubic inches per cylinder. LOVE THE COMMER KNOCKER! There's just something about the sound of two stroke diesels...

[@TheShamanizer]

The bike after the 427 Ford is a radial engine not a rotary.

[@needhelp2453]

In order for the engine on the bike to be called a rotory, the crankcase would have to spin on the crankshaft. I just verified it on Wikipedia.

[@Christopher0184]

Rotary engine is a term borrowed by the modern car industry from the aircraft industry, and it is technically a rotary engine. The engine that powers Mazda RX-7s is a Wankel engine. So stop trying to correct this guy when he didn't actually make a mistake.

[@needhelp2453]

Steve Bentley You are correct, it is a radial eagine.

[@yeahimere9631]

Christopher0184. No, the engine in the bike is a radial engine, a rotary engine's block and cylinders rotate around the static crankshaft. Do some research and get your facts right , dopey!

[@lindamcentaffer5969]

Aaaah the Wankel IS a Rotary. I think ya ought to EDUCATE yourself in this field! The only ROTARY engines used in airplanes, was in the World War 1 era, where the RADIALLY arrainged engine"s CRANKSHAFT was actually bolted to the firewall via a flange on the aft end of the crank, while the engine ROTATED around the crank shaft. The French made Gnome was a prevalent brand then, and the type was known as a ....ROTARY! The more modern types of "Radial - cylindered" engines, where the crank case is bolted to the firewall, HAS BEEN since around 1920, called a RADIAL engine. The Wankel has, because it's crank shaft is "weird," as long as I can remember, always been called a ROTARY. I have gray hair, and you're the first supposed "authority" in the field of engines I have ever seen get confused over this issue. Advice: when many people say you're wrong, research and learn. Then, ya MAN UP & admit it. Much more respectable that way.

[@machone7580]

You can buy any of these engines! Go out and find 'em!

[@steve-ph9yg]

The supply of RR Merlin’s are about gone the prices can run 65k or more.

[@scootergeorge9576]

The Chrysler multi bank was not a diesel. The very first engine on this video is misidentified.

[@brianthompson9729]

Correct !! It's a "Twin Detroit" !! 2 cycle diesel !!

[@robby844]

GM 6046

[@deborahchesser7375]

427 Ford Cammer , WINNER

[@yankeewatchdog7299]

They are still available, brand new for about $50K

[@kygunworks4982]

That's a radial aircraft engine, not rotary

[@bigredracer7848]

Thanks for taking the time for us thanks again

[@daveogarf]

(1:40) - Title should read "Ford 427 SOHC", for Single OverHead CAM. (2:28) - That's a RADIAL engine, NOT a rotary! Rotary engines fell out of favor after WW I.

[@elkvis]

Radial engines were still quite popular in WW2 as well. One of the best known fighters used in the pacific theater, the F4U Corsair, had a huge radial engine driving a 13(?) foot propeller. All of the major bombers used in WW2 had radial engines, including the B-17, B-25, and B-29

[@daveogarf]

@jimhal5553 - You're thinking of the Ford TAURUS SHO, which came out in the '80s.

[@daveogarf]

@@elkvis - Yes, and they were all RADIAL, as opposed to ROTARY engines. Look it up.

[@elkvis]

@@daveogarf I wasn't arguing that point. You said radial engines fell out of favor after ww1. That simply isn't true. They had a strong presence in military and private aviation, even after ww2.

[@morningstarx5340]

The radial on the chopper sounds so damn good.

[@waynenocton]

Yeah but why did they call it a rotary?

[@BuzzLOLOL]

Can still buy 427 SOHC engine new... from Kaase...

[@robby844]

You can buy a new one from Ford as well...

[@Hogger280]

That first engine is a twin Detroit Diesel 6-71 commonly used in boats.

[@ronliebermann]

Now if you want to power a tank, you have to buy an engine that’s hard to start, impossible to service, and costs more than the tank.

[@mattnoble1015]

You do not have a clue The first engines have nothing to do with dodge They are two stroke GMC diesels

[@BeinformedBefree]

Matt Noble still impressive though

[@greg657]

Matt Noble you would think with the amount of videos he's posted he wouldn't make these mistakes. Had me scratching my head, thx for saving my scalp.

[@phil955i]

I did wonder lol, I could only see two banks, not five

[@greg657]

phil955i make me wonder who he thinks he's fooling. I'd say 80% of the viewers are gear heads. It actually insulting.

[@phil955i]

Greg I agree

[@DaveBassTrekker]

R2800 "generally quite poor" - In what way? RADIAL engine with 2800 cubic inches and rated at 1500hp to 2250hp, depending on aspiration, water injection and fuel deliver systems applied. Was used in high performance FIGHTERS like the Vaught F4U Corsair, the Grumman F6F Hellcat, Republic P47 Thunderbolt, as well as several other high profile attack, bomber and cargo planes. Had more torque than you'd know what to do with and was reliable for 15 hour flights. No car engine could take the punishment an airplane engine endures. Quite poor - my Aunt Fanny.

[@gabewhisen3446]

Thanks this video was complete garbage

[@noti51]

The first engine is a twin 6-71 GM diesel set I think some were used in WWII tanks as were the Chrysler Multbanks and Ford GAA along with some radials i cant remember which ones

[@M977A2]

M4A4 used the 30 cylinder MB

[@TheKiltedYaksman1]

You can still buy brand new Cizeta V16Ts today. Road & Track just did a piece about it.

[@chrisweiser5142]

Fes up, Jay, "behind every good man" ,stands a"great woman ! "!

[@JorgeRodriguez-po7kx]

Like the Ford 427 at 1:38 Sounds good!

[@marcconyard5024]

The sleeve valve radial was perfected by Bristol. First came the Hercules then the Centaurus.

[@buellfuel2001]

The first engine shown was a Detroit Deisel 6-71 tandem. They originally used 2 Detroit Diesel 4-71 in the Scenic Cruiser bus both to get it rolling then kicked one out at cruising speed. I have worked on the Ford 427 SOHC.

[@ScotAnderson]

The merlin engine is awesome. Thank you!!

[@7REDDRACO7]

1:39 for anyone wanting to know ican build you a brand new ford 427 or other cubic inch discplacement cammer SOHC engine. brand new.

[@tomparker9001]

You should probably get your facts correct before you post your video in the future.

[@robertarrol1084]

Haha yer i agree

[@jettelo]

Click bait

[@Kj16V]

Which facts did he get wrong?

[@Dave5843-d9m]

The Merlin was only ever 27 Litre. The Griffon was 36 litre. Eagle (1915) was 20 litres Kestrel (1926) was 21 litres.

[@Dave5843-d9m]

Forgot to include the Britten 1000 V twin which made 166 bhp in a bike that weighed only 138kg.

[@sandasturner9529]

If ya can't buy it, then make it! Is what I always say.

[@laissythierry7830]

Incroyable moteur ☺😊😀

[@earlgateman3755]

The first engines are twin 671 Detroits used in the Sherman tank. Some were also fitted with 5 Chrysler flathead gas engines, this however is not that set up.

[@christophercripps7639]

Matt Noble - exactly. The first can't b multibank: no spark plug wires or plugs; Rootes supercharger on each side; only two cylinder banks. If anything it could be the twin 6-71 GMC 2stroke diesels used in the M4A2 Sherman. Still good 2c.

[@johnlopperman2161]

Chris Scavenging air blowers, NOT "superchargers".

[@joshtaylor4249]

That first engine kinda looked like some sort of Detroit.

[@dolanroufs1032]

Two 6-71

[@driverjamescopeland]

So where can I find a video of the hydrid 8cyl in the thumbnail pic? I bet it sound AMAZING if it's in odd-fire configuration!

[@robby844]

The what?

[@RevAldea]

You say this first is a Chrysler 30 cylinder madea from five 6 cylinder Plymouth flathead power plants but the first part of the video is showing a two GMC Detroit 53 series power plants configured as one power plant block assembly both engines I have seen for my self, back in my per teen years, I'm now 80 years old this year. it seems that someone has confused the timing of video with the timing of Notices. Sorry but this is true!

[@johnlopperman2161]

Rev I'm 85 this year and they're 71s not 53s. I've ran, taught, and maintained both.

[@asholeyt]

The first engine looks like two detroit diesel 6-71 diesel supercharged put together literally

[@MrCarnutbill67]

Flathead huh? What’s with the valve covers then? I worked on aircraft tugs that had 1953-54 Chrysler flathead 6’s in them and that ain’t it. Lol

[@jacquesblaque7728]

I suppose that by now someone's 'splained the difference between supercharging and mechanical scavenging. Detroit Diesels like this, being mechanically scavenged, have that service provided by the Roots blower. Any supercharging would be purely accidental. FWIW some Cleveland Diesels (locomotive engines, much bigger) are turbocharged, having crankshaft driven scavenging blowers to run at low speed/power to get them up & going.

[@billyshafer3182]

That is what they are. I worked con 671s in the Navy. If it is a gas engine. Where are the spark plugs.

[@johnlopperman2161]

ashole Not superchargers, but scavenging air blowers.

[@1972moonbeam]

The first engine is actually a set of twin 671 Detroit diesel one is a right hand drive and the other is a left hand drive. All 2 stroke Detroit’s run a blower because they don’t run intake valves. This set up was used on drilling rigs for running the mud pumps

[@klesmer]

The first engine is a pair of Detroit 6-71's paired up .

[@Kj16V]

4:58 The sound of me getting up for work in the morning.

[@Geoff_G]

I think the Zvezda M503 is a crazy engine that should've been in this list. 143 L or 8760 cid it was a 42 cylinder arranged as 7 banks of 6 cylinders each. Output was just shy of 4000 hp.

[@robertfly6133]

I have seen the GMC twin V6 in a running GMC truck back in 1972.

[@vshahid1001]

I came up with the Knight sleeve engine design, independently in 1984! Not realizing someone had done it decades ago. Just discovered it now. Thanks for including it in the video, it's monumental for me!

[@anthonymwelch]

The first motor was a twin Detroit diesel, you can still buy the ford 427's brand new, and the bike had a radial engine not a rotary

[@skulz1974]

Thats not a mulitibank : its a Detroit twin-six.

[@bricefleckenstein9666]

1:52 Actually, there WAS one trick used on the Cammer that didn't come from the factory - a GEAR driven camshaft setup replacing that insanely long timing chain and it's VERY large flex factor.

[@davelowets]

That never made it past the prototype stage, did it?

[@bricefleckenstein9666]

@@davelowets It was entirely "racer" done, as I recall. Might have been more than one engine builder that did it, but I'm pretty sure Ford had nothing at all to do with it.

[@davelowets]

@@bricefleckenstein9666 Yes, it was done by a an individual. Not by Ford.

[@Black_Cryptocurrency]

can't buy but can build again..

[@abergethirty]

GM 6046 Twin Diesel not Chrysler 5 bank. I believe there were 3-4 different engines put into the Sherman tank. Hell, the original video he ripped it from clearly identifies it as a GM Engine. I guess he didn't feel like finding footage of the harder to find multibank and said close enough for the rubes.

[@crusherbmx]

Ya, the roots blowers were kind of a give away.

[@normmcrae1140]

You're RIGHT - the Sherman had a variety of engines - including the Multibank, and a RADIAL engine.

[@dongeorge4037]

Yeah, I kept looking and looking and just couldn't see a 5 bank.

[@ronmartin3755]

The Motorcycle engine is not a Rotary engine it is a radial engine!

[@jhfl1881]

and you can still buy it too. The Aussies make them.

[@larrygall5831]

@ 2:19 ..It's a *radial* engine, not a *rotary*. Big difference.. rotary engines have a cam instead of pistons / cylinders. Radial, found in aircraft, have multiple cylinders that radiate around the crank (in a circle).

[@paulmartin3354]

The first engines are Two Detroit Diesel 6-71’s (1) Right hand rotating (1) Left hand rotating into a common marine gear for a boat. Not Chrysler engines.

[@jw4620]

You don't have any idea what most of this stuff is, do you? No score.

[@johnt7265]

4:32 I'm hoping nobody heard the merlin engine inside, got curious, and came running out that door to see what all the noise and commotion was. Not a great place to have a propeller, especially if it's a fire exit.

[@arthursmith5409]

I only watched to see the click bait engine thats seen to advertise the video! They didn't show this one! Got me again

[@weezylone]

I think, like a lot of people, you're conflating the Packard built RR Merlin V-1650 from WWII, with the Packard-built Liberty V-1650 from WWI. Easy noob mistake, they're both twelve cylinder vee engines with the same displacement, just of entirely different generations. The Liberty 12 is the one they used to power PT boats and some pre-war British tanks, while the RR Merlin was modified into the Meteor tank engine by being downsized to eight cyl.

[@psk1w1]

The Rolls Royce Meteor was a V12, never an eight, and always a close derivative of the Merlin. Some Meteors were made using Merlin blocks which were damaged but still usable, not good enough for use in an aircraft. The main alteration was removal of the superchargers and mild detuning. In this form it was a powerful and extremely reliable engine. As powerful as the Maybach unit in Panzer IV tanks

[@davidmerritt5075]

The PT boat engine was introduced in 1924, it was not a WWI engine, was 2490 cu in, called a 2500.

[@houssam6222]

i love hearing those engines bro

[@dieselman2000]

#1 is a twinpack DDA 6-71's set 2 strokes engines. 2 Valves fuel rail heads. Dead giveaway is the blowers......

[@alanhawkins4841]

The fist engine is a parallel Detroit Diesel 6- 71

[@dougb6239]

Yeah, you can very clearly see the infamous 6/71 blower, aka supercharger , in plain view. I was thinking Detroit!!!

[@weezylone]

That motorcycle is confusing the shit out of me. If that's not a radial aircraft engine, why does it look exactly like one. If it's a rotary aircraft engine why are the cylinders stationary? If it's a Wankel type rotary engine, why does it have a bunch of obvious cylinders? Are you ignant or have I gone mad?

[@aussiebloke609]

He's ignorant. This is a simple radial engine. Mind you, there were radial engines that were referred to as rotary (before the Wankel design started using the term), but in those cases, "rotary" meant that the entire radial engine spins on a stationary crankshaft. It's an old idea that made it onto a few aircraft - biplanes, if memory serves - and the design didn't last long because the design limits RPM significantly.

[@floridamankyle5461]

John Kaase Race Engines out of Georgia makes brand new Ford 427 SOHC engines based on the Ford FE/ Side oiler Block, they are not cheap, but you can buy them, the 427 SOHC is my favorite engine of all time.

[@swnorcraft7971]

With a rotary radial engine, the cylinders arrangement would have to be balanced. On this bike, they probably had to balance the crank, rods and pistons..... since it was running in the inverse of how it was designed.

[@garyvukich4059]

That is the twin GMC 6-71 package

[@shootybaking]

This was an amazing historical look at some of them. I knew a few of them in passing, but some of these were just WTF HOLYSHIT crazy.

[@joelopez1171]

that is not a rotary engine in that motorcycle it is a radial engine

[@aussiebloke609]

The Cizeta didn't have a central gearbox - it's a central flywheel and power takeoff to avoid flex from having a too-long crankshaft. The gearbox took power from this central point, but it was definitely not a "central gearbox, with a V8 on either side of it..." as there is no way you could fit two V8s _and_ a gearbox within the width of even a ridiculously-wide car like this (remember, the "T" in V16T stands for "transverse" - the engine is sideways across the car.) The gearbox was just behind the engine in the usual position.

[@CarsandEngines]

The merlin engine is cool

[@francescogiorgianni8793]

Dario

[@francescogiorgianni8793]

Fgdhggfggr

[@johnwestermark5649]

First engine is 2 Detroit diesels 6 cylinders mounted side by side

[@Maskinservice]

And another of those click bait videos. Didn´t see the engine from the thumbnail, except maybe for that red sports car from which we didn´t see the engine at all.

[@panosgamithis8868]

The Motorcycle didn't have a "ROTARY" engine , it had a multi cylinder "RADIAL ENGINE"...!!!

[@chrishaan5766]

The first is a GM product Detroit Diesel engines came in many different setups for different applications The creator of the video needs to do more research

[@davelowets]

😆 The TS3 wasn't "high speed" by any means. Redline was lower than 3000 RPMs. It just sounded like it is "high speed" because it is a 2 stroke.

[@xx1590]

The first engine shown was twin GMC tank engine

[@bricefleckenstein9666]

5:12 The PRIMARY disadvantage of the sleeve valve was complexity.

[@alanswallow9033]

All other pictures I have seen of a a57 Chrysler look totally different to your video eg L head spark plugs showing not rocker covers !

[@miketurner3834]

Dont you mean radial engine on the motorcycle?

[@davidpeters6536]

Panhard, French quirky engineering that worked. The Roots TS3 is better known as a "Commer knocker".

[@cliffleigh7450]

If you want to see that first engine setup - it is twin GM671's not a Chrysler Multibank - it was used by the Victorian Railways in Australia. They were used to power a generator to drive a diesel-electric railcar since the 1950's. Have a look at this: kzbin.info/www/bejne/aImbmWWdmbKZppY

[@crimpcreep6887]

The 437 SOHC you can buy brand new, if have big bucks. As well as 426 Hemi.

[@stefanheale794]

The one at 2:30 is not a rotary engine , it is a radial, which is something quite different. The English language is a beautiful method of communication, but only if it is used correctly

[@michaelrichter8973]

The gmc 702 v12 had a single cast block NOT welded together as you say,it did have 4seperate heads off thier v6 model gmc did this for parts commonality also the pistons and rods were the same as v6 but the block was one piece,so was the crankshafht

[@savedtwice7925]

@Michael Richter This 702 V12 is really cool . I've never seen one before . What were they used for ? Also pretty strange ... I noticed in his video clip of it running the 2 coils had no wires running to the distributer & the distributer had no cap . But I did see the points sparking . How on earth does that work ?

[@GIGABACHI]

Somebody needs A LOT MORE HOMEWORK before jumping in the "I make videos for YT too" bandwagon.

[@toddmccann3299]

Sea furies

[@ofenfrischeritaliener4441]

The engine from the Rootes ts3 sounded like a diesel truck on a highway

[@hoost3056]

The Ford SOHC 427 can still be built with aftermarket parts.

[@JohnW1711stock]

The engine in the JRL Choppers bike, is not a rotary, It's a radial aircraft engine.

[@yeahimere9631]

John W 1711 Stock. You're right, a rotary aircraft engine has a static crankshaft that the block and cylinders rotate around.

[@neilpilkington7342]

Rotec 2800 is NOT a rotary engine, it is a radial engine. Very big difference!

[@colinmartin9797]

I hope I never live to see the day these old engines can no longer be used by enthusiasts. Electric motors are amazing and the future of transport, and while they sound neat, the brutality of lots of little explosions is just irreplaceable to the experience of speed. Everyone needs to attend one single top fuel drag race event in their life. Those engines producing sound so loud it literally compresses your eyeballs and makes your vision vibrate as they bellow down the track is something you will never experience in any other way. I hope electric motors do for the gas engine what the car did for the horse. No longer a disposable tool, instead something for people who truly appreciate them to love and care for. Also, a twin six was used on a car in mad Max fury road... The car was in like 15 seconds of film but they built it with a real twin six. It blew up and they had to improvise, but it goes to show how everything, even the flamethrower bedpan guitar, was a real, functional thing in that movie. The car used in the movie was actually the one in this video, "Elvis", they just used a different body and didn't destroy it (using one of a very few number of cgi effects) because it was too rare and valuable.

[@marklewis2175]

1st engine is a pair of 671 Detroit's... also known as twin jimmies

[@2tubesOtoothpaste]

Also known as those Gawd Damned Scuh-Reem'n Jimmies... In the cold winter months (minus 30 - minus 50 ish) we could always tell which trucks or buses using jimmy engines were going by on the hiway over a mile away because of that whine.

[@robertfrost1623]

The first engine was 2 Detroit Diesel 6-71's bolted to a gear box with one output shaft. They were originally designed as main propulsion engines for landing craft (LCM) for WW2 and were used in later years in oil field applications. Nicknamed oilfield twins. They also made Quads, 4 Detroit 6-71 imputing one gear box. Not sure about the Sherman Tank application.

[@rcdeevil2848]

Notice the water coming out of the exhaust. That is a marine engine. Water is pumped from outside the hull, circulated through a heat exchanger then dumped out in exhaust. An engine for a tank would use a closed loop system, such as in your car. The setup they have shown would result in engine overheating over time due to the fact there is no radiator to dissipate the heat.

[@grahamebryce6593]

Cizeta V16 is not two v8’s joined together or side by side...the engine is two straight 8’s side by side with crankshafts geared to a common output shaft at the bottom. From memory the engineer worked for Lamborghini for a while... the cars appearance is very similar to early Diablos.

[@alanswallow9033]

On more research the engine you say is an A57 shows video of a General Motors GM 6406 double 6/71s!

[@plchef1]

I have 3 Panhards in running conditions and some more motors running...

[@larrygall5831]

@ 3:18 .. It's not the *cylinders* that are on big rocker arms, it's the pistons, unless this is very different from other 2 piston / cylinder engines. I found an example of this kind of engine in a very good moving diagram here: kzbin.info/www/bejne/pnjEeoZ8nMSNf9k

[@RupertReynolds1962]

Yeah. 2 pistons per cylinder, each moving on a rocker that connects to a common crankshaft. Also called the Commer TS3, because it was fitted to a Commer van.

[@skydive7054]

2:38 thats a radial engine, not a rotary. radials were mostly used in ww2 planes and some modern cesnas.

[@AdamAdamHDL]

I've seen the Sherman multibank.... That didnt look like it.

[@abergethirty]

Adam Adam it could be minus the transmission maybe ? It does look smaller than the few pics I've seen of it.

[@AdamAdamHDL]

Allen .Berge The engine I am thinking of had 5 banks in a star like shape. (imagine a flat 12, with a V12 on that and a straight 6 on that again.) I cannot see that here

[@abergethirty]

Adam Adam I found the original video. It's a GM Twin Diesel, also used in the Sherman. He clearly knew it wasn't a multibank because the video correctly identifies it.

[@AdamAdamHDL]

Allen .Berge Well there you go!

[@tazman8697]

Definitely GM 6-71's, The rocker covers (and the fact it's diesel) sort of give it away. Flathead motors don't have rocker covers. Plus the colour.

[@thermidorlevrai65]

the jrl chopper is not a rotary engine its a radial engine

[@BradBo1140]

The first engine does not look like the 5 bank images on Google. They have 5 banks clearly around a central shaft. That thing has two banks.

[@maxpuppy96]

that first engine has Detroit Diesel blowers on it

[@vector6977]

That's because it is a Detroit twin 6. Not a Chrysler engine.

[@GeoHvl]

MIstake Huge mistake, the Sherman had an aircraft type radial engine the so-called tank engine is a hybrid 6-71 Detriot.

[@johnstuart3851]

The "Chrysler 5 Bank" is actually a twin 6-71 Detroit Diesel. No Chrysler 5 bank engine shown in this video.