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Inline-6 or V6 ???

69K views 46 replies 16 participants last post by  BlueRidgeYJ 
#1 ·
First time looking for a Wrangler. I'm trying to decide weather to go for the older Flat 6 or the new V6. Any opinions on this???


Thanks,
Armando
 
#34 ·
Not a 4.0 but I have an 81' F-150 custom back at home with the 300 I6 in it and that little beast has taken me places I never thought a 2WD would go. The amount of torque she puts out is pretty dang impressive, granted she needs a little work to get her all up to speed after a little negligence since he purchase of my Jeep. But those engines are as before mentioned "bullet proof". My old man has a crate 302 BOSS that he said he would give me if I managed to blow my 300, I immediately went out and drove that thing like i stole it and she took it all with a smile, probably won't ever get rid of that truck!
 
#35 ·
Like I said, the technology is there to get 70mpg on a 70s model Buick, well over 120mpg in todays cars. Engine efficiency or emissions has NOTHING to do with it at all. It is about mounting the engine transversely, so you can put the same motor in the sedan and minivan and suv, after all they come from the same unibody "chassis". Then there is 1 plant, making 1 engine. Much easier (and more profitable) from a manufacturer viewpoint. Its just good ol fashion capatalism.

The I6 can move a 96 land crusher, Im pretty sure it could handle a tj, or jk for that matter. It does require a larger hood/car, which costs more to make.

And if y'all are sayin duty cycle has nothing to do with longevity, youre missing the picture entirely of friction and physics.
 
#37 ·
Blind Dog said:
Duty cycle means how long something is running vs not running. I don't get it?
Duty cycle can mean ocillating (on off cycles) or % of motor used, maybe engineers call it somethin else. Ive heard it reffered to those way my whole life.

For instance a 50% duty cycle would mean it is on 5 min out of 10 with say a welder, yet an engine at a 50% duty cycle is operating at 50% power 100% of the time.

Either way you verb it, the more towards high end operating extremes you run anything, the shorter the life will be compared to a similar "anything" operated in the mid or low end of its range. There are some exceptions, like diesel generators that'll run wet, but not cars. It's a friction thing - friction (motion) is the enemy of the internal combustion engine.
 
#38 ·
Oh. I never heard it in that context, like whipping a little 4 banger all the time to keep up with traffic. Surprised those last as long as they do. I guess it's all in the sturdiness of the design and good lube flow.
One down side of long stroke motors though, is the tendency for higher piston speed against the cylinder walls. But they seem to hold up well even so.

Oh well. They're gone so it's a moot point. I think the new 3.6L V-6 is going to be a good engine, but I love the sound of my old I-6. :dance:
 
#39 ·
Blind Dog said:
Oh. I never heard it in that context, like whipping a little 4 banger all the time to keep up with traffic...
Yup, exactly. It may be the wrong terminology, but thats what Im talking about. Not to say that 4 banger wont go a zillion miles, only that a similar engine run at 2k all the time would go 5 zillion very slow underpowered miles.
 
#40 ·
my old cherokee had the I6 and it was great. never leaked, never had any problem with engine or trans. plus it seemed to have alot more "get up and go" then my 2010 wrangler. but so far so good on the v6. just depends if you want new or old.
 
#41 ·
Yep. If you're getting almost anything (almost any car, any brand) new, you're getting an I-4, V-6, or V-8 and they are fine and great...but that's what you're getting. (I think even BMW is dropping the I-6 they used for so long.) Pros and cons to every cylinder arrangement, but they are still a 6, and basically all work the same way.

(One exception: My wife has one of those Subaru Outbacks with the 2.5L opposed H-4 though--and boy it pulls nicely, even in the mountains, and idles smooth as silk. May be the nicest running 4 I've personally driven. Naturally balanced by layout.)
 
#47 ·
I put 145k on a (non jeep) 4 banger in 11 years, whipped those squrrils(?) all over the Southeast. Nothing against em at all. I dont like the current industry practices by car (and many other) companies.

The I6 is just a better engine, but the I4 is its effecient little brother. Where ya think the I4 came from??? Mix of I6 design and V piston movement.

I saw 2 or so posts particular to jeep 4 bangers. Idk about that motor, so I cant speculate. But if there is an I6 option, WHY would you not get it?
 
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