What was/is the most reliable IC engine of all time?

[Turbo Actual]

22RE
1GR FE
2GR FE
5VZ FE
2F
1FZ FE
2UZ FE
3UR FE
3RZ FE
2ZR FE
Maybe not all time for some. But reliable imo.

 

[2EHA]

The 1986 Toyota Diesel pickup was probably the most reliable (more so than 22r even)

Very rare now days but most folks drove them until they rotted out which in this area is way too fast.

the 2LT engines are not held in high regard in any toyota community and are known as very short lived and underpowered engines

 

[vwmaniaman]

I vote for the Mopar 318 and the Ford 200 seven bearing 6 cyl.

 

[Rmay635703]

the 2LT engines are not held in high regard in any toyota community and are known as very short lived and underpowered engines

No idea what a 2lt is but my neighbor owned a non turbo Toyota diesel 300,000 miles through rust out. Not much of the body was left

several folks I know from other forums hav high miles on similar trucks

 

[bullwinkle]

The Civic D15 & D16 4 cylinders of the '80s & '90s were pretty tough, just had to do a timing belt occasionally. They seemed almost impossible to kill...

 

[2EHA]

No idea what a 2lt is but my neighbor owned a non turbo Toyota diesel 300,000 miles through rust out. Not much of the body was left

several folks I know from other forums hav high miles on similar trucks

that was a 1984 or earlier. pretty much extinct

the most common ones are turbocharged and not known for durability

 

[CheezWhiz]

Inline 6-cyl engines are underappreciated. They are the smoothest, most naturally balanced, vibration-free engines that can be built. The only engine smoother is the V-12, which is two inline 6 engines put together.

what about the y-18, or the x-24?

 

[350Rocket]

Ford 300, GM 250, slant six, 4.0 Jeep, 305 Chevy, 350 Olds V8, 3800 GM, Toyota 4.0, gm ls motor and many others.

 

[Motu]

the 2LT engines are not held in high regard in any toyota community and are known as very short lived and underpowered engines

The first 2L, with rockers (the Top Gear one) is very reliable, but when the 2L, 3L and 5L went to buckets it was not so good. You need a cylinder head in your back pocket to run one of these...and don't ever let the cambelt break !

 

[Job]

Peugeot 404 slant four could be on the list.

 

[2EHA]

The first 2L, with rockers (the Top Gear one) is very reliable, but when the 2L, 3L and 5L went to buckets it was not so good. You need a cylinder head in your back pocket to run one of these...and don't ever let the cambelt break !

i didn’t know the later NA ones were also problematic. the early rocker head turbo 2L(T) found in the american pickup
is known for cracking heads and dropping valve seats.

the japanese import 2LTE cruisers have an even worse reputation. 99% of them have factory replacement heads

 

[UncleDave]

Lister low RPM engines. Chooka chooka forever.

Indeed these should be on the list.

 

[CheezWhiz]

ford 7.3, judging from the resale value. fricking 20 grand for a 25 year old truck!

 

[Rmay635703]

ford 7.3, judging from the resale value. fricking 20 grand for a 25 year old truck!

I know several southern “moving company guys” that did minor repairs and own the old 6.9 granny gear 1 ton diesels

With minor repairs/upgrades these are good HD rigs, one guy has his 400000+ Towing miles moving furniture in one.

He went for the 6.9 because it was cheap

 

[CheezWhiz]

I know several southern “moving company guys” that did minor repairs and own the old 6.9 granny gear 1 ton diesels

With minor repairs/upgrades these are good HD rigs, one guy has his 400000+ Towing miles moving furniture in one.

He went for the 6.9 because it was cheap

i kind of want an IDI just so i can be a total prepper and make biodiesel out of wolf puppies or whatever they use.

 

[ripcord]

I don't know. Sometimes it feels like my life is wasting away waiting for that 6.9 to get us up to speed when riding in my brothers old F250.

 

[Motu]

i didn’t know the later NA ones were also problematic. the early rocker head turbo 2L(T) found in the american pickup
is known for cracking heads and dropping valve seats.

the japanese import 2LTE cruisers have an even worse reputation. 99% of them have factory replacement heads

Yes, the 2LT dropped valve seats, but all the L engines crack heads if overheated. We don't even check, we just fit a new head...they are cheaper than testing and repair.

 

[ripcord]

i kind of want an IDI just so i can be a total prepper and make biodiesel out of wolf puppies or whatever they use.

I don't know. Sometimes it feels like my life is wasting away waiting for that 6.9 to get us up to speed when riding in my brothers old F250.

 

[930.engineering]

MB OM 615/OM 616/OM 617/OM 621

Impossible to pass on them when it comes to reliability.

 

[hank2]

Ford 300 and 240 I6, Mopar Slant 6, Lower compression Mopar LB and RB "big blocks", Some of the GM 3.8 and 3800's, Nissan KA24DE and SR20DE, Toyota 22RE.