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V6 versus 2.0L V4 updates?

QwikKotaTx

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And I am allowed to do my own maintenance
I have the lifetime warranty on my Ram and I do my own maintenance. I just have to keep a log and all of my receipts. The newer contracts said something about taking the vehicles in so often to have them looked at by a dealership but mine does not. 2015 time frame.
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TheRaven

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You really need to test drive both engines. Then it comes down to how you rank things The 2.0l is more efficient, has a bit more mid-range torque, and is easier to find. The 3.6l has a bit more low-end and top-end torque, and is much more refined. We know the reliability track record of the 3.6l very well, we don't know the 2.0l that well because they haven't been out long enough to get deep into the 100k mile realm. For me it came down to refinement and the fact that the 3.6l motor's track record is well-known.
 
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NAZJeeper

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I will look forward to driving both. Especially now that I know that the new 3.6 is a different animal than the one in my JK.....I didn't know that....
 

Gunfighter

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I will look forward to driving both. Especially now that I know that the new 3.6 is a different animal than the one in my JK.....I didn't know that....
One big difference - the newer automatic 8-speed vs the automatic 5-speed.
 

Headbarcode

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Most of the people everywhere online that like the 2.0 usually have only 20k or so on them. I'm wondering about down the road....
My 2019 highly modified 2.0 turbo has about 80k on its odometer. Knock on wood, not a single hiccup related to the engine.

The 2.0 engine started being used in the Alfa brand vehicles back in 2016, so it's only a bit newer to Jeeps. Also, the 3.6 was highly revised in 2016 for the sole purpose of improved fuel economy. Both are great engines that are on an even playing field, as far as reliability.

I originally thought I'd have my Jeep built with the 3.6, but after a bunch of test drives, the low and mid range torque advantage of the 2.0 turbo couldn't be ignored. Test drive both engines, and confidently choose the one that puts the bigger smile on you face.

Jeep Wrangler JL V6 versus 2.0L V4 updates? 20221119_112300
 

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Headbarcode

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One big difference - the newer automatic 8-speed vs the automatic 5-speed.
Yes. The ZF 8-speed is an amazing transmission, and the higher number of closer sequential gears helps to keep the engine in the meat of its torque curve.

The 2016 engine revisions to the 3.6, for improved fuel efficiency, are the other big difference. To name a few:
- Higher compression ratio
- Lower pressure piston rings
- Deleted piston aprons
- Smaller diameter piston wrist pins
- Narrower crankshaft journals for both the connecting rods and mains
- Many of the structural ribs on the block were deleted, the rest were abbreviated

Not to be taken as a knock, just worth pointing out to illustrate that both engines started went into use in 2016, so they are on an even playing field. One could easily go in either direction with the same confidence.
 
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NAZJeeper

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My 2019 highly modified 2.0 turbo has about 80k on its odometer. Knock on wood, not a single hiccup related to the engine.

The 2.0 engine started being used in the Alfa brand vehicles back in 2016, so it's only a bit newer to Jeeps. Also, the 3.6 was highly revised in 2016 for the sole purpose of improved fuel economy. Both are great engines that are on an even playing field, as far as reliability.

I originally thought I'd have my Jeep built with the 3.6, but after a bunch of test drives, the low and mid range torque advantage of the 2.0 turbo couldn't be ignored. Test drive both engines, and confidently choose the one that puts the bigger smile on you face.

20221119_112300.jpg
Nice Jeep sir! I am leaning towards that Stingray color myself (or perhaps the Granite) and hopefully in the Willys trim. I will look forward to driving both new engines and making a decision!
 

Gunfighter

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Yes. The ZF 8-speed is an amazing transmission, and the higher number of closer sequential gears helps to keep the engine in the meat of its torque curve.

The 2016 engine revisions to the 3.6, for improved fuel efficiency, are the other big difference. To name a few:
- Higher compression ratio
- Lower pressure piston rings
- Deleted piston aprons
- Smaller diameter piston wrist pins
- Narrower crankshaft journals for both the connecting rods and mains
- Many of the structural ribs on the block were deleted, the rest were abbreviated

Not to be taken as a knock, just worth pointing out to illustrate that both engines started went into use in 2016, so they are on an even playing field. One could easily go in either direction with the same confidence.
Yup. Like said, the transmission is one big difference, probably the biggest difference IMHO.
 

Headbarcode

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Yup. Like said, the transmission is one big difference, probably the biggest difference IMHO.
Yeah, it's so amazing that it's even been able to turn quite a number of die hard manual fans over to the dark side. :rock:
 
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NAZJeeper

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Kinda curious why with the upgrades to the V6 and the new 8 spd tranny, they weren't able to coax a few more mpg out of it....?
 

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Headbarcode

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Kinda curious why with the upgrades to the V6 and the new 8 spd tranny, they weren't able to coax a few more mpg out of it....?
The revisions I mentioned above are just a portion of what was changed within the 3.6 pentastar, and it gained roughly a 1-2 mpg improvement in fuel economy. It could've been more, but at the same time, they have to also be concerned with the engine running as clean as possible to meet federal requirements. To accomplish that, they set the engine up to want to run at higher rpms. A higher rpm engine equals more fuel being sprayed per mile vs a lower rpm engine, so that negated some of the potential gains from the engine revisions.

The 8-speed auto transmission is the other half of that equation. More gears equals less rpm drop during every upshift, which keeps the engine in its powerband and running cleaner. The previous 5-speed would allow the current engines rpms to drop too low, which would cause the engine to lug its way back up to the powerband. Lugging burns more fuel and it burns dirtier.
 

jayjc08

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LuvHydro

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Didn't read all the comments so I'm probably restating others, but I like my 2.0 a lot.

The pros for me
Peppy and fun to drive
Good mileage @ ~23-24 mostly highway
28K with no issues

Cons
Scary noisy on cold startup
Long-term with the turbo is concerning

I think it will burn bright then go to hell long before my other 200K+ vehicles, but I won't have it then so I really don't care. I plan to sell it the second year after the redesign.

Also, the transmission is so very smooooth.
 

ColShrek

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I agree to get WHAT you want and mod it HOW YOU WANT... So... My plan is the Edelbrock Supercharger for the non-etorgue 3.6L

https://www.edelbrock.com/edelbrock...-jeep-wrangler-jl-and-gladiator-jt-15284.html

I did have a 2021 Sahara JLU w/ 2.0L as a rental for 7 days road tripping all 7 states in New England area in July 2021. It was really fun to drive and I wasn't a fan of the noises.. I'm a "Tim Taylor kinda Gear head" and like old-school power with add on's...

This video shows you a little something ?



Best wishes to you.
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