ok but they seem so much closer then the ones that are in there now...


i just checked the old one and the new ones...the new ones are about 40 and the old ones are about 70 gap

 

stand by let me reference somthing for ya ill find the gap!!! give me 5 minutes

 

there was chapions and i bought ngks

should i return the ngks? or is that big of a deal? ngks have always worked great in all my chevys

 

i dont think the brand matters, i use bosch, personal preference really! does your jeep have a distributer? or is it electronic ignition? looks like the gap should be.035

 

hey surfer check out this page may help you a little
http://www.jeepz.com/forum/engine/16...ine-specs.html

 

it has a distibutor

alright so 35 thanks dude!

 

Nice looking jeep, sweet deal on it too, that RE lift probably cost about half of that.

 

Nice Heep!! and welcome to CF!!

As always i use Champion, if its a dodge/chrysler or Jeep ive always run Champs. Cheap and good as any other. Good Luck!

 

ok i have a big problem...

i filled up my truck twice and im oly getting like 200-220 miles to a tank and im driving 70-80 on the freeway

i have 31x10.5 inch tires the max psi is 50 i have them on 40psi

i have a flowmaster muffler stock cat drop in K&N filter and i cut part of the bottom of the box for more air i cleaned my throttle and ran sea foam

i also changed my oil with mobile 1 10/30 and put new spark plugs in and the gap is 35

so why am i getting such crappy mpg??

 

mmm seafoam. Its good stuff. I get around 200 to the tank in mine. I have 33's but my mileage is around 1.5 miles slow for every 1 mile so if my math is correct for every 6 or so miles I go I can add 1 more mile to the odometer. So if I have 200 on it when I fill up I would divide that by 6, I would then get 33.3 which means I should be gaining 33 miles at 200, for the end result of 233 total miles to the tank. Sounds like your in the ball park if not better!

This is on a 75K HO motor with an airaid intake for the only engine mod. Plus dont waist your money on "better" spark plugs. Use NGK or Autolite. If you want the best plugs then go to iridium and not waist your money on all the other again "better" plugs. Those are the best and last a long time, but cost around 10-15 a plug If memory serves.

 

i wasnt going off the od on the truck i was going off my navi (gps) i already knew it was off in the truck because of the tires ...

 

i was reading up on stuff about jeeps and i came upon this ...

http://www.4wheeloffroad.com/brandpa.../photo_07.html

it says 65 gap? im at 35? so should i gap mine at 65? that would explain why my old ones were at 70

 

You running those wires from Performance Dist. and that coil they have?
I say no. Increasing the gap allows the coil to build up a bit more of a charge before firing off to the plug. It will shorten the life of a coil not designed to do it. Plus, they're using Bosch plugs... These things run like raped apes on Champions. If you want to pump a gap that high, get a HP cap & rotor, new coil, new wires, and I'd say a MSD box. And be ready to eat plugs and coils...

 

i just want better mpg

my moms lifted v8 on 35s is better on gas and her truck is twice the size

 

No K&N airfilters. They flow well b/c they are too pourous. Jeep likes cheap Champion plugs gapped at 0.35.