Oldsmobile's Complete Diesel Engine Lineup

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  • Опубліковано 6 вер 2024
  • Oldsmobile's diesel engine program (1978-85) is completely represented in this collection. in this video you will see:
    1978 Chevrolet Silverado 350 (5.7L) V8 diesel
    1979 Oldsmobile Custom Cruiser 350 (5.7L) V8 diesel
    1979 Oldsmobile Cutlass Supreme 260 (4.3L) V8 diesel
    1982 Buick Electra Park Avenue 350 (5.7L) V8 diesel
    1982 Cadillac Seville 350 (5.7L) V8 diesel
    1985 Buick LeSabre Limited Collector's Edition 350 (5.7L) V8 diesel
    1985 Chevrolet Celebrity CL 263 (4.3L) V6 diesel

КОМЕНТАРІ • 125

  • @snoopytheace4487
    @snoopytheace4487 2 роки тому +38

    I would LOVE that truck. I'm so glad someone is saving them. I'm also glad that a 4.3 v8 still exists. It's so disheartening to see that people just swap and scrap these engines because they are too stupid to fix them.

    • @SchnelleKat
      @SchnelleKat 2 роки тому +7

      More or less don't wanna learn, and keep it simple besides automatically believing the rumors and myths.

    • @theodorgiosan2570
      @theodorgiosan2570 Рік тому +5

      They are not at all hard to fix. I would say easier or about the same as a gas engine of the same size. Really all that they need is head studs and a water separator, if you want to go further than that I have built one as complex as copper head gaskets, turbo, splayed bolt main caps, half groove main bearings, dry sump oiling, piston oil squirters in the pan, built injection pump, pencil heads with pencil injectors with pintle lift adjustment all the way backed out. It makes 550 HP and revs to 6000 RPM, and with oil squirters the block is not at it's power limit, but rather the limit of the injection system. A fantastic engine with an undeserving bad reputation.

    • @renj6531
      @renj6531 6 місяців тому +1

      Ikr they they were super simple to fix. I don’t blame somebody for being intimidated trying to figure out this debacle of complication in today’s cars Especially since things are compact and hard to get to for example, on a lot of modern cars you have to drop the subframe and lower the engine just to get access to the alternator

  • @junktionfet
    @junktionfet 2 роки тому +42

    I can't thank you enough for posting this video, and for keeping these vehicles alive. What a glorious sound!

  • @A_man213
    @A_man213 Рік тому +7

    Sounds so good from a distance. Like a River rushing over stones, so goes the diesels of the Oldsmobile.

  • @freddyhollingsworth5945
    @freddyhollingsworth5945 2 роки тому +6

    That 79 4.3 V8 is probably only like 1 of 10 left in the world that still runs!!

  • @2packs4sure
    @2packs4sure 2 роки тому +7

    I had an 85 or 86 Chevrolet Chevrolet Celebrity 4.3 diesel company car which was not a bad car but it broke a few times and I did hear blown head gasket mentioned at least once.
    It had an excellent air conditioning..

  • @johnstuart3851
    @johnstuart3851 Рік тому +3

    Fitting quality cylinder head studs to replace the weak factory fitted bolts practically eliminated head gasket failures.

  • @thomasbarlow5007
    @thomasbarlow5007 2 роки тому +13

    It's good to see your posts again.
    I hope you didn't get rid of the Oldsmobile Dark Blue Regency....or your other cars.
    I always like to see you keep them humming and I admire your knowledge and understanding of those engines. Back when cars were so much more.

  • @johnbender1596
    @johnbender1596 Рік тому +3

    We had a 81 Delta 88 Royale Brougham. Hauled the family all over the country and would get 35 mph. Certainly enjoyed that ride.

  • @jamesrogers2999
    @jamesrogers2999 Рік тому +4

    Unbelievable! I’m living my dream through yours. I have owned a few. Still have an all original 79 Olds 98 with the D block. I was on the hunt for a 79 cutlass with the 4.3 manual transmission. I love all original GM odd ball cars. Thanks for posting.

    • @theodorgiosan2570
      @theodorgiosan2570 Рік тому +2

      I have been looking for one of those for years at this point. They also made a Pontiac 6000 STE with a 4.3 V6 and manual transmission.

    • @jamesrogers2999
      @jamesrogers2999 Рік тому +1

      Amazing

  • @CompleteToiletGarage
    @CompleteToiletGarage 2 роки тому +4

    I love the video, and these olds diesel engines, only one that you dont have is a RWD 4.3 v6 diesel. I have one on an engine stand that im thinking is going into an s10

  • @brianlouviere4151
    @brianlouviere4151 2 роки тому +4

    cool collection! All you need now is a manual transmission 79 260 Cutlass and a RWD 4.3 V6

  • @DieselPurge
    @DieselPurge 2 роки тому +7

    That 4.3 260 V8 is a unicorn for sure.

  • @grabasandwich
    @grabasandwich 2 роки тому +4

    I'm confident this is going to go viral and be used as a reference for those who deny their existence lol. Thanks!

  • @jaybudd1617
    @jaybudd1617 2 роки тому +4

    I love the Cadillac Seville. That rear end got my attention when they came out with that design. I had a late friend that purchased a black A few months before he passed. He was in New Mexico.

  • @leazer44
    @leazer44 2 роки тому +2

    Oh I miss those sounds so much. We had an 79 Caddy with that engine! All the neighborhood kids would come out and watch my dad leave when he drove it! You could hear it coming in from 2miles away. Dad was never able to sneak quietly home lol!

  • @raymondhaley6185
    @raymondhaley6185 Рік тому +6

    I'm impressed really, it's so nice to see so many cars all gathered together with one of my favorite Oldsmobile engine in them.

  • @SchnelleKat
    @SchnelleKat 2 роки тому +8

    Wonderful lineup!!! & Preservation. In your lineup it really goes to show how rare the c10 trucks are! Can't beat the cranking sound & Idle Clack of those engines.

  • @captainpicard1701e
    @captainpicard1701e 2 роки тому +8

    My first vehicle was a 1981 Pontiac Grand Prix with the 5.7 Diesel. Still the most comfortable vehicle I've ever sat in. Couldn't keep good cylinder heads on it, kept cracking them. I sure wish I would have kept it though, as I would have preserved it like you have done here. Very nice collection you have.

  • @mossig
    @mossig Місяць тому

    I have a 1980 5.7 d. Cutlass. It always starts in less than a second even after sitting over the winter. I'm using it as a summer car. I need the vacuum parts that hoses are hooked up to at the throttle body and a cap for the washer fluid reservoir. Because of vacuum leaks my TH200 only shifts up after I lift of the gas pedal on high rpm's. No, it's not the modulator since it never had any. The Chevy pick-up sounded like it had a misaligned starter or something. Made that typical noise from the fly wheel/starting gear. Cool video. No one will ever duplicate it!

  • @davissheppard9381
    @davissheppard9381 2 роки тому +6

    Absolutely amazing collection !!! Great to hear those Olds diesel’s. Thank You for sharing.

  • @brenthanshaw2012
    @brenthanshaw2012 7 місяців тому +1

    I had a 1981 Olds Delta 88 Royale Brougham 2-door coupe. First car when I turned 16. I loved that car.
    I wish I had it back. 😢 Hearing these is sweet music to my ears.

  • @stephengroenenboom4480
    @stephengroenenboom4480 2 роки тому +3

    This is awesome. I have an 84 cutlass supreme 2 door RWD with the 4.3 V6 diesel.

  • @Hubjeep
    @Hubjeep 2 роки тому +10

    Awesome lineup!! I never knew there was a 6-cyl and 8-cyl 4.3L!! Where did you find all these? That is the first diesel half-ton truck, no?

    • @marko7843
      @marko7843 7 місяців тому +1

      You read my mind, I was thinking that I know about the 260 v8, but a v6??

  • @christopherarmstrong2095
    @christopherarmstrong2095 8 місяців тому +1

    I love the Custom Cruiser. I had an 81 Caprice Wagon Diesel. 28 mpg
    The water separator really helped these engines I heard.

  • @safn1949
    @safn1949 10 місяців тому +1

    I was a beginning GM tech in late 1983, only V6 I saw was in a Buick Century with a broken crank, running on 4 cylinders. Worked on quite a few 5.7's and went to Gm's school for them. Never saw or even heard of the 4.3. 5.7 would last with a set of head gaskets around 60k or so and an upgraded injection pump. Overheat it and that was the end of the heads, head studs and better head gaskets sounds like the way to go with 22.5 to 1 compression stock. Nice.

  • @carolinaking843
    @carolinaking843 2 роки тому +8

    Glad to see you back. That’s one nice set of rides you got there!

  • @sweetdaddy77
    @sweetdaddy77 Рік тому +2

    The LeSabre probably the most dependable of that group. They worked out the DX bugs by then.

  • @FLYEAL
    @FLYEAL 2 роки тому +4

    Good to see you back!! DX parade. Keep them coming. Do an update. Video in landscape is even better.

    • @FLYEAL
      @FLYEAL 2 роки тому +1

      And, don't THINK we don't see those GMC motorhomes. lol

  • @youtoobe169
    @youtoobe169 Рік тому +2

    Thanks for sharing your beautiful collection with us!

  • @dtaylor5493
    @dtaylor5493 Рік тому +2

    That's a whole Lotta rattle in one showing! I love it!

  • @ce9345
    @ce9345 2 роки тому +4

    What a unique collection! I also love the fact you have two gmc front-drive motorhomes! Great collection!

  • @hopingforthebest1.9
    @hopingforthebest1.9 2 роки тому +3

    Thats awesome! I cant imagine theres too many of those 4.3 v6 diesels out there!

  • @Napier363
    @Napier363 2 місяці тому

    A friend has a 1979 Cadillac Brougham DeElegance diesel.
    Originally it was the service managers car special ordered with every option.
    In 1986 With only 25k miles the engine was replaced with a Target master DX block.
    Owner passed away in 1987 his wife kept it for 32 yrs in the garage.
    My friend bought it with only 27k miles.
    The new engine had only 2k miles on it.
    It’s a gorgeous car.

  • @robertwhite9898
    @robertwhite9898 Рік тому +2

    Quite a collection! Those are keepers !

  • @m37cj72
    @m37cj72 2 роки тому +2

    That's a great collection. Keep saving them!

  • @GabrielPorterCoordinatesBand
    @GabrielPorterCoordinatesBand 2 роки тому +2

    Awesome collection!!!

  • @DanielLopez-me9mh
    @DanielLopez-me9mh Рік тому +1

    I've always had a kind of fascination with the 350 Oldsmobile diesel engines neat that you have all the cars including the chevy Silverado amazing collection

  • @johnathanl2663
    @johnathanl2663 Рік тому +2

    Quite the collection thank you for posting

  • @DCGuy1997
    @DCGuy1997 2 роки тому +2

    Awesome collection! So many rare cars. And that wagon!

  • @muzzcovw7674
    @muzzcovw7674 6 місяців тому

    Very cool! I miss my 81 Delta 88 2 door. I bought it with 85K miles and blown head gaskets. A simple swap to a set of ARP racing head studs and a proper fuel/water separator and I put over 125K commuting miles on it in the early 2000s. Those 2 simple upgrades would have kept many of these on the road, especially the water separator. I spoke with an old GM mechanic years ago and he said he felt slugs of water being injected were the cause of most early gasket failures

  • @zacharywittman8876
    @zacharywittman8876 4 місяці тому

    I have a 82 delta 88 with the 350 diesel and I love it I got it dirt cheap at an auction non running and all I did was put batteries and a shot of either and it fired up and ran, now I’ve done glow plugs and it starts faster than any other vehicle on the property

  • @remmor669
    @remmor669 2 роки тому +2

    Absolutely fantastic! Thank you for sharing and for keeping these beauties on the road!

  • @randyrankin589
    @randyrankin589 2 роки тому +6

    This fantastic video is very unique in many ways. I'm not aware of another collection of operational Oldsmobile Diesel-powered vehicles like this one in the world! Also, this video serves as a great retro video for the Oldsmobile Diesel engine. (It would be an interesting retro video for GM.) I liked the fact that you displayed every iteration of the Oldsmobile Diesel produced (D block, DX block, 4.3 V8, and 4.3 V6). It was good to see water/fuel separators on these vehicles. GM should have installed those from the factory. The only thing that would have added to the video would be the blue 1981 Olds Regency that you have. However, I know that it was basically represented by the Buick Park Avenue. Do you still have that Regency? Thank you for posting!

  • @2509498788
    @2509498788 2 роки тому +2

    What an interesting lineup of diesel engines thanks for sharing

  • @Dizzledude2012
    @Dizzledude2012 2 роки тому +2

    This is so cool, I had no idea they made diesels out of 4.3s as well! Very nice collection, they're all so clean.

    • @bensfixitpage341
      @bensfixitpage341 2 роки тому +1

      I think its more like they made a 4.3 diesel not made a diesel out of a 4.3 wouldn't you agree?

  • @rseitz6759
    @rseitz6759 2 роки тому +2

    I love this ! Thanks for sharing.

  • @FunTowerRadio
    @FunTowerRadio 10 місяців тому +1

    What are 'pencil' heads? I special ordered a 1984 Olds Cutlass Supreme with the 5.7 liter diesel. At 82k, it started breaking head bolts. I maintained that car to specs, including using the proper oil (SAE 30). I can't believe that pickup has 100k on it!

  • @JeanPernicia
    @JeanPernicia 4 місяці тому

    It's very remarkable that these vehicles survived to this day.

  • @1_BlackDog_23
    @1_BlackDog_23 10 місяців тому

    My Mom has the Mayor of Syracuse's Mothers Cadillac 1984 Sedan Deville Gold metallic paint, 350 Oldsmobile Diesel it had about 238,000 miles before detonation snapped the wrist pin clear off ! ended up finding a 1970 Oldsmobile 350 Rocket engine out of Texas for a couple grand all rebuilt, car is still running strong today, they just don't make them like they used to because people hold on to them ! and they are safer vehicles! price keeps going up on these awesome classics and Antiques. Thanks for showing off your cool collection, God Bless.

    • @1_BlackDog_23
      @1_BlackDog_23 10 місяців тому

      I've just noticed you have no Pontiac with the Oldsmobile 350 Diesel, and to be honest i haven't seen many Pontiac's with the 350 Diesel only one i can recall was 15 years ago may have been a Grand Prix, these vehicles are pretty rare to begin with low production numbers, cool stuff.

  • @IowaBudgetRCBashers
    @IowaBudgetRCBashers Рік тому +1

    These got bad reputations but if not driven hard we’re great motors. Innovative in that they adapted the gas v8 into the v8 diesel. Had the fuel of the era been better these could’ve probably been much better. Notice how quiet they are when running on modern diesel fuel. That old high sulfur diesel was dirty, and stinky stuff. Thanks for sharing

    • @bobbyheffley4955
      @bobbyheffley4955 Рік тому +1

      And if they added water separators from the get-go

  • @slade9372
    @slade9372 2 роки тому +2

    Amazing collection! Thanks for sharing with us.

  • @peugeot505man
    @peugeot505man 2 роки тому +2

    Quite a fleet you have, amazing!

  • @RaymondHaley-bi8lx
    @RaymondHaley-bi8lx Рік тому +2

    The magnificent seven, no less, wish I was so lucky, rather have one of those than an EV.

  • @freddyhollingsworth5945
    @freddyhollingsworth5945 2 роки тому +1

    Life changing collection!!! My life dream!!!!

  • @collinreesejones5525
    @collinreesejones5525 2 роки тому +1

    You are a Rockstar! Thanks for sharing this!

  • @Trapper4265
    @Trapper4265 9 місяців тому

    Wow, that fills my heart with pure joy. 😊

  • @mudog35
    @mudog35 11 місяців тому +1

    very nice I wish I could see them.

  • @waynecorbit8475
    @waynecorbit8475 2 роки тому +1

    Can't believe you have one of the 4.3 V8's. First car was a 79 Delta 88.....I learned to do head gaskets...HaHa.

  • @rileypaterson7117
    @rileypaterson7117 2 роки тому +1

    this is such a cool video thanks for sharing

  • @marksalani2600
    @marksalani2600 2 роки тому +1

    Love it !! What happened to the beautiful( 82 I think) olds 98 regency ??

  • @steverone7623
    @steverone7623 2 роки тому +1

    Been waiting for this awesome

  • @darwinstormer6460
    @darwinstormer6460 2 роки тому

    Great that's your back. Where did the 85 Cutlass The Olds 98 sedan and coupe and 85 Buick Collectors Edition Go.

  • @MsChief1964
    @MsChief1964 Рік тому +1

    Had a 81 delta 88 very good car,Even in cold Norway

  • @chrisreynolds6520
    @chrisreynolds6520 11 місяців тому

    Fantastic assortment you have there. I like the C10 especially. Years ago I converted several non running diesels to gas using the diesel short block and 403 heads. Vehicles were just not worth putting injectors and injector pumps in.

  • @davidsimon6998
    @davidsimon6998 2 роки тому +2

    Bring back memories of my dad's two GM diesels -78 or 79 Custom Cruiser and 81 Bonneville Safari. Question - to start do you need to pump the accelerator or anything like that?

    • @grabasandwich
      @grabasandwich 2 роки тому

      I don't think it's recommended, but in our climate, it's sometimes needed on those extremely cold winter days. If it doesn't start easily on its own, it's the glow plugs or controller likely need to be fixed.

    • @randyrankin589
      @randyrankin589 Рік тому +2

      Depressing the accelerator once while waiting for the glow plugs to go off activated a cold start advance solenoid. Pumping the accelerator on a mechanical Diesel doesn't push more fuel like it does on a carbureted engine.

    • @johnstuart3851
      @johnstuart3851 Рік тому +1

      @@randyrankin589 To clarify, fast idle was dependent on the engine temperature, as was the glow plug preheating cycle, controlled by the same engine temp sensor. The fast idle speed for cold starts and engine warm-up normally activated without pressing the accelerator pedal first. However, If the fast idle solenoid was sticky or weak, the solenoid plunger may not be able to place the injection pump to fast idle without pressing the accelerator pedal. With the fast idle solenoid energized, the solenoid coil will hold the plunger at full stroke position regardless.

  • @weegeemike
    @weegeemike 7 місяців тому

    Your video is one of the only ones I could find that featured the RARE '79 Olds 261 4.3 DIESEL. Definitely not many were made and even fewer are left. Did these have the head bolt issues of the early 350 diesels? Just curious. Not too much info on them since they were only made for such a short amount of time.

  • @walterbatman7949
    @walterbatman7949 Рік тому +1

    Very cool line up looking back as bad as rap these engines got a person can look back they are not as bad as the crap that GM is producing today

  • @Underappreciatedclassics
    @Underappreciatedclassics 2 роки тому

    Good to see you Mr 81’olds

  • @elirenigar9357
    @elirenigar9357 8 місяців тому

    This is super cool.

  • @robysexton15
    @robysexton15 2 роки тому

    Seen you yesterday in East Texas in the lesabre beautiful car

  • @RaymondHaley-bi8lx
    @RaymondHaley-bi8lx Рік тому +1

    Word of warning though if you use the same amount of oil as did the factory the engine won't last.

  • @bartorlans5390
    @bartorlans5390 10 місяців тому

    Very cool.

  • @Markbluejem67
    @Markbluejem67 Рік тому

    How any do you have? Your videos have some of the same ones, but not all together. Do you still have the Delta 88 you started with? 😁

  • @kevindoxey
    @kevindoxey 2 роки тому

    Love Love Love!!! But no Ninety Eight Regency Brougham or a Delta 88 Royale Brougham?

  • @mudog35
    @mudog35 Рік тому

    hello nice video..

  • @riotautorepair9662
    @riotautorepair9662 6 місяців тому

    This man loves being stranded on the side of the road

  • @charleshawkins3665
    @charleshawkins3665 2 роки тому +1

    Where do you find these diesels? I have tried to find one to buy and can't find them at a decent price.

  • @arm2644
    @arm2644 2 роки тому +2

    How is the fuel mileage on all those good old diesels? Would be interesting to know!

    • @drewsey5733
      @drewsey5733 6 місяців тому

      High 20’s to 30’s is not uncommon from what I’ve heard.

  • @derrickjackson6737
    @derrickjackson6737 2 роки тому

    Old skool classic Buick/Chevrolet and Oldsmobile V8 Diesel engine

  • @alexinnewwest1860
    @alexinnewwest1860 2 роки тому +1

    Very impressive line up! How did the gm truck get the olds diesel. I have seen a couple before. But did you just tick off a box when ordering your truck or did you have to pull some stings with Chevy

    • @lanemcreynolds9894
      @lanemcreynolds9894 2 роки тому +3

      GM offered them in the whole line up, even though the original branding & engine developed out of the Oldsmobile group.

    • @grabasandwich
      @grabasandwich 2 роки тому +1

      @@lanemcreynolds9894 I think I saw a video of a G van with one too?

  • @leroydiesel5647
    @leroydiesel5647 Рік тому

    Hi, I posted the other day, not sure if it actually posted or got deleted? I was saying Im looking for one of these old diesel cars a 1985 Toronado or Eldorado or even the 4.3 Cutlass Ciera.
    Im in Houston. Any leads let me know, thanks. I'll post a link to my website to make contacting me easier if that is Okay with you?

  • @Bbostwick8
    @Bbostwick8 9 місяців тому

    LeSaber was a great car

  • @louiewiessv5756
    @louiewiessv5756 2 роки тому

    Thank you!!

  • @johnnyjoevazquez
    @johnnyjoevazquez 7 днів тому

    I have a 1982 Cadillac Coupe DeVille 5.7L diesel and needs injection pump rebuild who your shop??

  • @chrispeterson17
    @chrispeterson17 2 роки тому

    This is a cool video but question why none of those engines are never steam cleaned?

  • @bbtjdonnelly14
    @bbtjdonnelly14 5 місяців тому

    Way cool

  • @TheGbeecher
    @TheGbeecher 6 місяців тому

    My question - how reliable were any or all of these? Was the poor reputation accurate?

  • @stevewalker412
    @stevewalker412 9 місяців тому

    Just saw a 82 regal with a 4.3 ?? On fb

  • @danescustombuilds5398
    @danescustombuilds5398 Рік тому

    Love them old hybrids diesel's 30to 40 MPG,s all day in full size cars news cars can't even do it in small packages and computers the EPA knew that that's why they hate diesel's my 83 k20 suburban with 6.2 diesel kills it on MPG 27 all day

  • @carlosjohnson6074
    @carlosjohnson6074 2 роки тому

    Is the any of the Buick’s still available

  • @Tomcat71
    @Tomcat71 2 роки тому +2

    These where all decent engines if you didnt try and drive them like a gas engine , and keep good fuel and keep the water out of the fuel

    • @johnstuart3851
      @johnstuart3851 Рік тому

      All the Olds designed diesels performed the best and ran more reliably if the car was driven normally and not pampered. Using the available engine torque during acceleration was the preferred driving style.

  • @Underappreciatedclassics
    @Underappreciatedclassics 2 роки тому

    Can I have permission to upload this to my TikTok page your channel will be credited

  • @RaymondHaley-lv2mo
    @RaymondHaley-lv2mo Місяць тому

    The magnificent 7❤😂

  • @overboost7667
    @overboost7667 2 роки тому

    Wow !

  • @A_man213
    @A_man213 Рік тому

    Can you tell me which years and engines to watch out for because I am looking to purchase. I am scared to because everyone just slams Diesel engines in general not realizing that diesel done right is better than gas in certain vehicles

    • @theodorgiosan2570
      @theodorgiosan2570 Рік тому

      Look for 82 or newer, 4.3 V6 or 5.7 V8. 83-85 is even better, they had worked out all the issues by then. 85 is the final year, they had a factory water separator, one should be added on any of the pre-85 models.

  • @stevec7793
    @stevec7793 2 роки тому

    Do u have any caprice or impala diesels or even a chevette?

  • @user-tn9po1yh8r
    @user-tn9po1yh8r 7 місяців тому

    Is any of your diesel for sale?

  • @killergemini0178
    @killergemini0178 3 місяці тому

    No 5.7 diesel?

  • @SH00T_TH3PUMP
    @SH00T_TH3PUMP 8 місяців тому

    Whats "pencil heads"?

  • @justsumguy2u
    @justsumguy2u 2 роки тому +1

    I don't know why this was in my recommended, I don't even like diesel. I was around when those engines were new; not only were they unreliable, they were also incredibly underpowered. The guy down the street from me had an '88 that he bought new; he was always complaining about the problems it had. And I drove a Cutlass 2 door with the 4.3 that was only a year old---one of the slowest vehicles I've ever driven, felt slower than the base gas 3.8

    • @johnstuart3851
      @johnstuart3851 Рік тому

      Yeah, not everyone was satisfied with the performance of these Olds designed and manufactured GM diesels.
      Since engine HP value is the product of engine torque and engine speed, these engines developed excellent low rpm torque with relatively low-rated hp. There are several other important differences in operational factors as well.
      Spark ignition engines operate on a mostly constant volume combustion process, (most combustion occurs at minimum cylinder volume near TDC at the beginning of the power stroke), whereas compression ignition diesel engines operate on a mostly constant pressure (as cylinder volume increases) during the power stroke.
      I just like the way diesel engines run in general, being different from spark ignition engines.