2020 Willys Blown Motor

[Ratbert]

150K on the clock is pretty good for a JL. It's no 4Runner.

Hell, even owners of the new Tacos are complaining about basic quality issues: https://www.tacoma4g.com/forum/threads/multiple-issues-with-my-new-tacoma.3511/

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[jack bauer]

Hell, even owners of the new Tacos are complaining about basic quality issues: https://www.tacoma4g.com/forum/threads/multiple-issues-with-my-new-tacoma.3511/

Thats the new Taco owners. I am referring to the boring, slow ass, bullet proof 5th Gen 4Runner.

 

[driventoadventure]

Depending on what kind of K&N filter you got, they aren't better... If you got the kind that has to be oiled, then they're actually quite a bit worse - especially if you're not keeping them oiled. https://www.nicoclub.com/archives/kn-vs-oem-filter.html

 

[mwilk012]

My garage floor and driveway would have given me clues to that….theres none there.

lmao, I hear this every day. It got low, it got hot, and it doesn't matter because the damage is done. Your warranty isn't real. Coolant dries before it ever hits the ground in at least half of all cases.

 

[mwilk012]

If i lived in a free state id absolutely do a V8 swap. Make some fresh lemonade with this situation! If you have to spend $ either way. A 5.7 should be rather inexpensive to obtain and will be awesome!

Often times the fine print on the warranty will have arbitration in it. Which tends to work in their favor

only someone who has never done this thinks that. You're looking at roughly 12-20k to hemi swap a JL.

 

[Whaler27]

<<SNIP>>

For what it's worth, nearly all "better" air filters make more power because they filter less. Less filtering results in a higher chance of particle ingestion into the engine. If you ran a K&N air filter and a bore scope reveals your cylinder walls are scored resulting in low compression then it is highly likely that's what happened.

I agree with almost everything you said in your original post and the small snippet pasted here. On the diesel truck sites there is ample discussion of OEM warranty claims being denied due to aftermarket air filters allowing more particulates through, in some cases to the point where the vanes on the damaged turbos had an almost sandblasted appearance.

The only statement I wanted to pick at is the part I bolded above.

In high-performance applications where fueling rate is dramatically increased developing more power will require more air, but our Jeeps and most other modern engines don’t show consistent, improved fuel economy OR performance after swapping in any of the aftermarket filters. Even the tiny improvements in the alleged before and after dyno runs touted by the aftermarket filter companies are suspect, especially when other tests have shown no dyno performance improvement even when engines were tested with no filter at all.

As I have said in other threads, all of this makes sense, as it‘s unlikely that K&N, or S&B, or AFE, or any of the other dozen-plus aftermarket air filter manufacturers stumbled onto a magic air filter system that improves performance and fuel economy (those were the original claims of the aftermarket filter pioneers).

Think about the market pressure (and government pressure) to design motors that make more power and provide better fuel economy. Now consider the combined science and engineering talent, experience, and investment at Honda, Chrysler, Fiat, Ford, GM, Mercedes, Cummins, Toyota, Porsche, Ferrari, and the rest of the vehicle manufacturing world. I suppose it’s possible that some little mom-and-pop company with a dozen employees stumbled onto a new air filter design that none of the auto manufacturers could figure out over the last 60 years, but it seems unlikely. It seems even less likely that twenty or thirty more little mom-and-pop filter companies would stumble on similar OEM-shaming design improvements over the last thirty years. Finally, if K&N, or AFE, or S&B, or any of the others really had stumbled on the magic solution to improved power and fuel economy, we’d be seeing clones of those designs on new vehicles — because the early patents have long since aged out. Even if the patents still protected the original designs, one of the automotive giants could have bought any of the little filter companies with its couch-change.

Aftermarket air filters are 99% snake oil*, and I bought into it for many years. The “better” filter for our Jeeps and trucks is the one that came with it, or one of the respected aftermarket clones of the OEM unit.

* Obviously, the analysis changes in high performance applications where the fueling rate is dramatically increased. In the 1990s guys were taking Cummins diesels from 300 hp to over 1,000 hp. That requires a LOT of fuel and air.

 

[Jtphoto]

Thats the new Taco owners. I am referring to the boring, slow ass, bullet proof 3rd Gen 4Runner.

Yah like the dependable old boring Jeeps from the same era. Even the 3.8L JK were longer running.

 

[jack bauer]

Yah like the dependable old boring Jeeps from the same era. Even the 3.8L JK were longer running.

Exactamundo.

 

[Whaler27]

only someone who has never done this thinks that. You're looking at roughly 12-20k to hemi swap a JL.

And worth every penny. ?

 

[mwilk012]

And worth every penny. ?

Odds are someone who doesn't know what it costs also isn't capable of doing the labor, so double the price. You're better off buying a 392 every time.

 

[gsbrockman]

Little 115lb blonde

 

[gsbrockman]

A good luck shout out from another Knoxville area Jeeper! Hopefully Secret City gets you sorted and on your way down the trail! ?

Isn’t Secret City also affiliated with North Knoxville CDJR?

@Doolally41

 

[alphawolff]

I agree with almost everything you said in your original post and the small snippet pasted here. On the diesel truck sites there is ample discussion of OEM warranty claims being denied due to aftermarket air filters allowing more particulates through, in some cases to the point where the vanes on the damaged turbos had an almost sandblasted appearance.

The only statement I wanted to pick at is the part I bolded above.

In high-performance applications where fueling rate is dramatically increased developing more power will require more air, but our Jeeps and most other modern engines don’t show consistent, improved fuel economy OR performance after swapping in any of the aftermarket filters. Even the tiny improvements in the alleged before and after dyno runs touted by the aftermarket filter companies are suspect, especially when other tests have shown no dyno performance improvement even when engines were tested with no filter at all.

As I have said in other threads, all of this makes sense, as it‘s unlikely that K&N, or S&B, or AFE, or any of the other dozen-plus aftermarket air filter manufacturers stumbled onto a magic air filter system that improves performance and fuel economy (those were the original claims of the aftermarket filter pioneers).

Think about the market pressure (and government pressure) to design motors that make more power and provide better fuel economy. Now consider the combined science and engineering talent, experience, and investment at Honda, Chrysler, Fiat, Ford, GM, Mercedes, Cummins, Toyota, Porsche, Ferrari, and the rest of the vehicle manufacturing world. I suppose it’s possible that some little mom-and-pop company with a dozen employees stumbled onto a new air filter design that none of the auto manufacturers could figure out over the last 60 years, but it seems unlikely. It seems even less likely that twenty or thirty more little mom-and-pop filter companies would stumble on similar OEM-shaming design improvements over the last thirty years. Finally, if K&N, or AFE, or S&B, or any of the others really had stumbled on the magic solution to improved power and fuel economy, we’d be seeing clones of those designs on new vehicles — because the early patents have long since aged out. Even if the patents still protected the original designs, one of the automotive giants could have bought any of the little filter companies with its couch-change.

Aftermarket air filters are 99% snake oil*, and I bought into it for many years. The “better” filter for our Jeeps and trucks is the one that came with it, or one of the respected aftermarket clones of the OEM unit.

* Obviously, the analysis changes in high performance applications where the fueling rate is dramatically increased. In the 1990s guys were taking Cummins diesels from 300 hp to over 1,000 hp. That requires a LOT of fuel and air.

Couldn't agree more. Using the factory air filter is the right choice is nearly all situations. Swapping the filter only is, as you said, snake oil 99.99% of the time. I know of a story where they were racing Mazda rx-8's out on the salt flats and found the K&N filter consistently gave 1 additional HP on the dyno, so they ran it in all their cars. Soon after they started losing engines to sand ingestion.

The biggest "power" from an aftermarket air filter is usually used in combination with an aftermarket intake. Usually these aftermarket intakes effectively change the stock airbox design from a cold air solution into a ram air intake. By default a ram air intake will make additional power in the higher RPM band in nearly all situations, but this usually comes with additional intake noise (some like it) and heat soak issues. If anyone is considering changing their airbox for power, they need to realize all they're doing is gaining sound out of the equation most of the time. Some like it, some don't. I used the mopar performance air intake on my supercharged JK. It was kind of a pain to deal with in the engine bay, and definitely didn't make any additional power. It did, however, give a decent whine to the supercharger that wasn't there before. That was cool.

 

[Windshieldfarmer]

To summarize; OP did not strictly follow required Mopar maintenance schedule, dealer provided lifetime warranty is therefore void, OP needs to pony up for new engine. End of story. Waste of money to engage an attorney.

 

[DaltonGang]

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