just want to amke sure these are the correct ngk tr5's that everyone is tellin me to put in..yes i am completely stock. they were just really cheap so it got me wonderin if these were the correct ones.

https://www.f150online.com/galleries...820&anum=15068
https://www.f150online.com/galleries...819&anum=15068
https://www.f150online.com/galleries...817&anum=15068
https://www.f150online.com/galleries...818&anum=15068

i hope i didnt the links right so the pics pop up in here lol. i want to put these in tomorrow so if you view please reply. thanks


edit...so i didnt do the links right to get them to show up in here...but they work...they are in my gallery in the first album.

p.s. what gap size should i use?

 

Yes, that is the right plug for a stock truck.

It is a little hotter than a TR6.

Gap at .042" - .044"

If you kick the boost up over stock go to a TR6 and start gapping smaller according to the amount of boost you are running.

 

Those are fine. I would rather stick to the stock plugs at stock boost levels(even 2#s additional) as they have a real nice idle quality and burn very clean. The NGKs are noticably rougher running. Gap .042
Jim

 

it had the motorcrafts in it when i got it..then i went to bosch platinum plus... already had to replce one of them now another so i'm just taking everything off and cleanin the intercooler and changing them all out. i'm hoping one i change out these plugs everything will stay workin good for a lil while so i can save up for a chip and put my exhaust on. thanks for the help and info guys

 

anything wron with running the TR5 at 38? my setups mostly stock, got a +2# bottom pulley with massaged heads. pulled my #4 plug out and she was gapped @ 26 (and fuely as hell like it didnt run)

 

A friend of mine just changed his for the first time at 100,000 miles. He's fully stock. They looked like they could've gone another 100K. The Motorcrafts are what I'd put in it if I was going to leave it stock. Can't beat 'em.

 

i trust NGK enough to not worry about the plug its self, just trying to double check i got everything sorted out plug wise to move on to my other issues. cant get her to idle

 

HI!... The NGK-TR5's will be fine in your application.

 

First step would be go to ngk.com and check your application, if you have a lightning the correct STOCK plugs are tr6's.

Then people will say " no there not ", so then u can cross reference any other cross reference book and it will show tr6 = stock ford plug.

People will then say " no ngk only says tr6 are stock but they are cooler because there a copper plug." I however personally think ngk should have an idea of whats what since they make the plug.

Next step will be someone will post a chart that shows tr5's or tr55 are for a stock lighting. (just because its a chart does not mean its correct)

Bottom line is if your stock stick with stock plugs - some ngk plugs are not the exact same height and the coil packs dont seal aswell thus causing corrosion problems.

I personally run tr7ix from a 2#, to 4#, to 6#, all of which shows that a tr7ix is colder then a tr6 and i dont have to change the plugs every week and my idle is just as good as when it was stock. (i did gap down to .032" which i think the tr7ixs came at anyway)

 

if TR5's are not the correct replacement why does it seem everywhere i go they get cross referenced over to oem plugs?