I have read that a lot of people like the motocraft double platnium plugs. My local dealer in san diego wants to charge me 11 bucks per plug. I feel like i'm gettin takin, is that what the really go for and are they worth it. Any light on this would be sweet. My truck only has 70,000 and i need it to last a while.

 

http://www.rockauto.com/catalog/raframecatalog.php

thyere under autolite double platnium i believe...

 

autolite = motorcraft

 

Any product is made to a specific specification. Even if it's made by a recognizable aftermarket mfg.

Yes the motorcraft plugs are great quality. And yes $11 per plug is ripping you off. For that price I'd buy a set of denso IT's

On my ranger.. when I replace them.. I'll put in a set of bosch +2 platinum's. (about $3 a piece)

Rich

 

and you will be re-replacing them shortly after......

with the Rangers ignition system, the Motorcraft are the BEST you can buy. There are MANY people who have highly modified 4.0 engines (some aspired and some non aspired) that wont run anything but Motorcraft. That there alone should tell you something...

 

I don't use popular opinion to choose plugs or any mechanical part for that matter. I use scientific info & then test it myself. I've done this in the past on bosch +2s. I've boosted and sprayed on them in engines making 575hp at the crank... no problems.



Rich

 

that is fine "what" you have done, but have you ever ran them on a Ranger, espically a 4.0 Ranger? it has been proven MANY times over and over again that any other plug besides the Motorcraft in a Ranger will not last nor allow the engine to run at full potential.....

 

I have a bridge for sale. You interested?


Listen, even on a wasted spark ignition setup you cannot beat an unshrouded spark kernal. Nor can you beat a low resistance plug. The motorcraft plugs are very good indeed. (I've boosted them too) but they can be expensive and they do not have an unshrouded spark. It's simple science.

Rich

 

simple science DOES NOT prove crap......just because it looks good on paper doesn't mean it works..........

do what you want, but i am telling you that in a Ranger, Motorcraft is the only way to go....

 

My 2 cents..... I ran bosch plugs in my bonneville against everyone on the bonneville web sites wishs, and they were right, they were junk and made the car run worse. Since I felt the ill effects first hand, I would have to say, bosch plugs are like fram filters.....not good....lol :)

 

Or autolite right? Aren't motorcraft plugs made by autolite??

 

correct...............

 

Thanks for all the insite, i appreceate it. Will be posting some pic's after i go on the azusa meet.

 

ok you guys sold me on motorcraft, now the fun part starts with getting some of them out,lol

motorcraft it is, what about the wires good idea to replace them too?

 

Motorcraft or the ones that Wayne ( www.stuffforyourranger.com ) sells........

 

Well, I'll be replacing my plugs and wires shortly...need to get a few other mods in place and others sold before that is on the agenda.

 

There have been many occourences on here of members installing new bosh plugs, gapped correctly, and then having to replace them with something different becuase the 4.0 for some reason dosen't run well with them in.

Just giving you a heads up before you waste your money.

 

BUT to add more to this,ANY late model Ford runs better on Motorcraft plugs,soooo many time we get driveability issues that are related to other brand plugs !

 

ok, i'm with Maurice 110% on this! it's been proven by research, trial and error, and plain and simple time that anything other than O.E.M motorcraft plugs just don't work as well in the Ford/Mazda motors!

Autolites don't work as good! the performance aspect is there, but the simple fact is that after awhile the pressure in the cylinder walls is pushing on the plugs so hard that the threads rip out....and this, you can go to any ford service center and ask any master tech about running aftermarket plugs in the 4.0, 5.4, and 6.8 motors!

and furthermore, there is NO reason (unless you've had major engine trouble) to replace your plugs at less than 120k miles! If you replace them before that you're wasting your money

 

save your money! you're plugs don't need to be replace till you hit around 120k miles and when i changed my plug wires i lost almost 1.5 mpg. Ford plug wires work better than anything else out there...

 

LOL.. you guys need to spend more time doing actual testing... in your garage, under a hood, and away from a keyboard.

I'm a ford nut.. and a horsepower junkie. Just a word to the wise... there are other plugs besides motorcrafts that work just fine. And in far more extreme conditions than these little 4.0L rangers will push. SHoot.. How many of you guys reading this have anything besides a bolt on "mod" done to a 4.0L? One or two? Maybe three?

For what it's worth..

I've got *ford* 4.6L, 5.4L, 2.0L (na & turbo), & 3.0L engines that I've personally installed other plugs in. Guess what.. the world did'nt stop turning and my engine didn't fall out. The best bang for the buck has almost always been the bosch +2 plugs. (they don't like nitrous or boost over 12psi)

The motorcraft plugs IMO are better than most aftermarkets that you'll find. But that doesn't mean that your limited to just those plugs.

Rich

 

and this little 4.0 isn't the only motor i have ever done anything too.......actually this is the only vehicle i have ever owned that i didn't do all my work to it......i have worked on a many 302, 350, 351, 400, 460, along with many others...........

 

My comment was only that bosch plugs are bad, from real world experience. As far as other plugs go, run what you want. Personally bosch and split fire plugs have not faired well for me.

 

i have never had any luck out of a Bosch plug......

 

didnt this same fight happen like 2 months ago?