77olds

Hopefully we can get a big thread going.

I've seen a LOT of misinformation posted on these forums. What happens, is one person has a bad experience, because something completely random happens to their Jeep. Then, someone asks a question, and they answer based on that one bad experience they had.

For example, say someone bit into an Apple once, and found there was a worm in it.

Then, someone posts on the forums "What is a good fruit to pack in my lunch? I heard Apples are healthy".

The person who found the worm would then post "NO, do not buy Apples, worms like to climb inside them. That's not healthy, buy an Orange instead."

This happens on this forum constantly, and I'm tired of it.

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Maybe we should try to put an end to some of the rampant rumors and biased advice people give.

What are some things you've heard or seen posted on this forum that are absolutely not true?

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Here is a list of the TRUTH about some rumors found on this forum:

Myth: 0331 Heads on late 99 through 01 4.0 engines are destined to crack.

Truth: The 0331 head on late 99 through 2001 model XJ's is not certain to fail. It may not be as strong as previous designs, but it isn't guaranteed to crack.


Myth: Removing your doors weakens the structural integrity of the vehicle and can cause warping.

Truth: On XJs, doors do not factor into body rigidity. Some sports convertibles have double latches on the doors and in that case, they play a part in the structural integrity, but the XJ is connected by a sub frame at the bottom and a roof at the top. Removing your doors will make no difference.


Myth: "Add-a-Leaf" kits are a waste of money and do not provide any benefit at all.

Truth: If you install an "Add-a-Leaf" on an already sagging Leaf Spring Pack, don't expect great results. Adding the extra leaf will not make up for the existing ones that are worn out and sagging. This does not mean that the "Add-a-Leaf" kits are worthless. Adding an extra leaf will always add stiffness, but that's only really useful on a pack that's not already wasted.


Myth: Putting Dodge Neon Injectors on your 4.0 will yield much better gas mileage/Putting Neon Injectors on your 4.0 doesn't do anything at all

Truth: Installing Dodge Neon Fuel Injectors will improve fuel mileage... but not dramatically. You will noticed better throttle response.


Myth: Driving without a sway bar is incredibly dangerous and you're almost guaranteed to roll over.

Truth: Driving without a sway bar installed is risky, but not guaranteed disaster. You should still drive very carefully.


Myth: You can install HIDs on any vehicle so long as you aim them right.

Truth: HIDs shouldn't just be adapted to fit "whatever", they require a specific reflector pattern as to not blind opposing traffic. Buy the right stuff or don't do it.


Myth: Using FRAM Oil Filters will ruin your engine.

Truth: Some FRAM Oil Filters are not very good Filters, and in fact can cause dry start-ups due to poor design for flow, causing cold, thick oil to circulate more slowly. It would be best to buy reputable brands.

TheJerm

As related to the 0331 head, my gf has 210K on her 01 and no issues; even after we had to replace the head gasket. You can crack any head if you overheat it. My 95 head had cracks between valves on cyl 1,2,3,5 and 6 plus a crack running between the intake ports on cly 5 and 6. This is all from the PO driving it while it majorly overheated and caused exhaust gasses to get into the cooling system which made the issue worst. The weakness of the 0331 head is that when/if it does crack from overheating, the coolant gets into the oil

papaj

Excellent thread! Im sure it will grow quickly

blue_on_blackXJ

Removing your doors will not lessen the integrity of the unibody because they are parallel with the unibody rails so they do not add any rigidity. How could a couple bolts and a dinky latch do that anyways? Roll your window down and put your fingers between the upper door frame and body, what do you feel?

chadh92

Not just for cherokees, but AAL kits aren't bad. Idiots who put AAL on an already sagging leaf pack come on here and whine and say they suck, so they got a bad rep.

77olds

Great, 3 things to add to the list so far. Keep 'em coming!

no rdplz

neon injectors increasing gas mileage. The injectors themselves did not increase your mpg's. You saw an increase because you stared using CLEAN injectors. Pull the factories, clean them out, and put them back in you'll see an increase in mpg's to some degree. Neon injectors do 2 things and 2 things only -
1. due to better fuel atomization they give you a smoother idle
2. due to a slightly higher flow rating you get better throttle response

jmm0122

But you have to also realize that 90% of the xj's out there have already shot rear leafs, so 90% of the time adding AAL to rear leafs will be bad. In my book the only way AAL is worth it is if the rear packs are brand new, or have been replaced in the past few years, which 90% of the xj's out there are not.

The whole head cracking thing is another interesting point. I agree with not every 0331 head is bad but why risk it. If im stuck between buying a early 99 xj and a 00-01 xj, I am going to choose the 99 just because I have bad luck. Lol.

I'll add one to the list. A t-case drop is a fix for driveline vibrations.

hawaiian808

just a quick question about this so we can clarify

would better atomization cause the fuel particles to be "finer" ( laymans terms) allowing to get a better A/F mix causing a better burn thus creating more power, in return needing less fuel for the same amount of energy? ( better MPG/increased power but not a HUGE improvement just a small one) feel free to delete this to stay on topic

ClaytonXJ

If you remove your sway bars and drive on the street you will immediately crash in a big firey ball killing all women, children and puppies within a 5 mile radius.

XJ BoSS

xjsnake

Just because some people don't get flashed or pulled over for running HID's in improper housings: ebay, ecode, dot housings, doesn't mean it's a good idea to half *** HID's...

JeepingDan

In all my years working as a repair tech I've worked on a lot of Jeeps and have never come across a bad head. But seen a ton of blown water pumps including mine.

blue_on_blackXJ

Oh I've got another one:
In spite of common belief, it's pronounced "wInch" not "wEnch."

Winch: Recovery device.

Wench: Your mother.

CoffeeCommando

... damn you HOLLYWOOD!