Most reliable engine, independent of oil used?

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It seems the consensus here is that inline engines 4-6 cylinders are the most reliable. My experience is you can't beat an engine with ALL its cylinders in one line.
 
Well, I know of an engine. The Toyota 3A (or 3AC). I swear that little engine would run on no oil. I cannot say I ever abused an engine more! My 1982 Tercel was powered by this first ever transferse mounted front wheel drive from Toyota. I am still looking for another one. Todays engines can't hold a candle to this little beast.

The 22R ate timing chains, but was a great engine for sure. the 20R double timing chain was so much better!

Five-O roller motor Ford? It survived multiple 120+ MPH blasts, missed shifts, rev limiter bouncing, and sideways fun for 2 years and 30,000 miles from me. It lived on excellent maintenance and oil, but it should have died. Great motor!!!!!!!
 
I would vote for the Dodge 318, Ive seen them run out of oil and start knocking like crazy, add oil and they would smooth out again. We have alot of Ford Rangers where I work with anywhere between 120,000 to 300,000 miles and still running, the 2.3L I think. They look like #@$%!, more dents than Snow whites cherry but run really good yet. We dont have such good luck with the 4.2s. But our trucks get serious abuse, 10,000+ oil changes, lots of idling, dusty and overloading. Alot of the Techs dont take care of them. Iam tempted to pull a sample on one of the seriously neglected ones but they would think I was some sort of Freak.
 
I vote for the toyota V8 (4.7) 2uz-fe. Check the UOA's on this engine, probably the best ever seen on this board on a consistant basis regardless of the oil used, weight of oil used, location and conditions vehicle driven in, etc. Just an oustanding engine.
 
Engine wise, the J30 series which is Accord V6 is so legendary, they say everything else will break before the engine. Ahem, I cannot say I have witnessed it first hand but I bought one in Dec 2005 and it's a beast. It was refreshed including the engine +4 hp and gear ratios were changed. It pulls hard and one essential reason I posted this engine as most reliable is I beat a Supra engine with it. Not only do I want the engine to last forever, but the tranny better as well.
 
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Jeep 4.0.
Had mine for 10 years, 133K miles. Never let me down yet, runs like it did when it was new.




Make that 2 votes for the AMC designed 4.0. 163k; starts every day, no maintenance except external components, and doesn't use a drop of oil after ARX. It does seem to chew up the oil quickly, but that just makes me feel like it is king of the meat grinders and gives me an excuse to crack a cold one and change the oil more often...
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I would vote for the Dodge 318, Ive seen them run out of oil and start knocking like crazy, add oil and they would smooth out again. We have alot of Ford Rangers where I work with anywhere between 120,000 to 300,000 miles and still running, the 2.3L I think. They look like #@$%!, more dents than Snow whites cherry but run really good yet. We dont have such good luck with the 4.2s. But our trucks get serious abuse, 10,000+ oil changes, lots of idling, dusty and overloading. Alot of the Techs dont take care of them. Iam tempted to pull a sample on one of the seriously neglected ones but they would think I was some sort of Freak.




We have a company p/u (1999 Ram 1500 w/318) and they've run it out of oil too. It knocked like crazy (lifter noise), and when filled up w/oil the noise stopped. Truck has been abused and keeps on running. Transmissions (had one replaced in 150K miles) and ball joints are another story, though. This truck gets used (abused) as a truck so maybe the trans was driver abuse, but have heard of pre-2001 Dodge trucks having weak trannies.
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It pulls hard and one essential reason I posted this engine as most reliable is I beat a Supra engine with it.




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Huh? Please expound (describe BOTH engines' preps/states/applications) and explain. There are trillions of MKIV/2JZGTE lovers/fans/worshippers/idolators out there who would shoot you on site for even thinking that thought!
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350; 454; and 3.1L GM engine's used in trucks.

3.2L sohc Isuzu V6 engine - takes a beating, keeps on ticking at 173k carefree, never opened engine.
 
+1 for the Volvo red block

Also, for a bit more performance, I'd recommend the eta m20 from BMW, used in the 325e(s) and 528e from the 80's. Low hp, but huge torque. The akilles (sp?) heel is the interference head design.
 
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1.) 1.6 ltr. cast iron engine by Toyota , bought 86 Chevy Nova and did 2 paper routes , 1 day on weekend for 98 mis. and little under 300 stops and another 365 days at about 99 mis. and avg. of 70 stops a day . Finally pooped out at 274,000 mis. If I had a backhoe would of buried it in back yard .




+1 i also had an 86 Nova, but mine had the 5 speed tranny. I had the cat cut out and the performance improved slightly...wow, I ran that thing on gear oil (it burnt oil) and all that happend was that I cracked the oil sending unit sensor..after I replaced it, it was good to go again! I threw everythign at that car, and it never stopped running...and the fuel economy with a 2bbl carb still beats my 97 Escort that's 11 years newer!!

I dunno what went into that motor, but whatevere it was, it was sure engineering magic!
 
The 4A-FE engine used in 1988-92 Toyota Corollas (I think they used it later, but I am assuming that it was changed) is certainly the most reliable engine my family has used. We have owned three Corollas with this engine and none of them have left us stranded for anything but for problems such as the battery dying or the lights being left on. The two I have worked on only use 1/2 a quart between 3k oil changes (I may extend this soon). It has been a rock-solid engine for us, though it is certainly not a powerhouse!
 
Well it seems that the best engines of all times have been identified. I guess this might take the thread 180 degrees in the opposite direction but which are the worst engines of all times?

My candidates are:

The diesel engines from GM during the 1980s which were made from gasoline engines.

The 4 cylinder engines in the 1970s chevy Vega.

The corvair engine (might be unfair because Chevy mechanics never really understood air-cooled engines the way german mechanics did).

Most any GM V-6 engines

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My 1952 F1 Ford pickup trucks 239ci flathead V8. Was my first ride, paid $100 and a hay wagon frame for it, Yeehaa!

No oil filter either. Ran the finest rerefined ND SAE 30/40 oils I could find and wound wind that thing up as tight as I could....heading down the narrow and winding Southern Indiana ( mostly gravel) roads ( to avoid the State Police ) because I did not have a tag, a drivers license, or insurance, ( hey I was a poor farm boy) and I had a need for speed and to practice drifting for the Sprint car races.....: )

At about 300,000+ miles on teardown, I could not rebuild it because bearings and rings etc were literally falling to pieces in my hands. One of my first tribo experiments..


The quality of the flatheads was outstanding.
 
(350?) CID Chevy V8 used in Marathon Checker cabs. The ones that I saw had a 1bbl carb. The engine literaly could not rev enough even in netural to be blown up. Legend (urban?) has it that many ran over 500K miles without any internal engine work.
 
And I'm sure that the Chrysler Slant 6 in it's various forms has already been mentioned.

My dad bought a blue '62 Valiant with a 225 CID Slant Six. It had a hole in the trunk from an altercation with a forklift (cheap ride).Stuffed a rag in the hole and he never changed the oil in it in the time that he owned it.
He just added some Wolfs Head or Quaker State or whatever was cheap when it was a quart low. I remember some early reprocessed stuff that really stank. I did talk him into changing the oil filter one time. Car never let us down... amazing when you stop and think what one of our "modern"wonders with "modern" lubricants might do after such treatment.

Must have been at least 100k miles without an oil change as he still had it into the early 70's. Then he sold it for what he gave for it ($300.00).

In my mind the legend of the Slant Six is real.

Rickey.
 
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