Crazy Fast KJs????

KJ_WHEELER_2010 · **Posted:** Tue Dec 07, 2010 9:59 pm

I know our Libertys are made for daily driving with a weekend off road trip in there sometimes.....however the dragracer side of me comes out once in a while and I wonder stuff lol. Whats the fastest anyones ever seen a KJ do the 1/4mi in? Has anyone seen any crazy engine setups or turbos? I wanted to take mine when I got it just to see what the baseline was but never did. I traded in my Mustang for this so I used to go alot.

JeepMorrison · **Joined:** Thu Jul 16, 2009 11:34 am **Posts:** 1236

mine does 88Mph

ArmyKJ · **Posted:** Tue Dec 07, 2010 11:15 pm

4x4kayak2112 wrote:

mine does 88Mph

You got a Flux Capacitor with that thing? :ROTFL:

jeep4life7 · **Posted:** Tue Dec 07, 2010 11:16 pm

ArmyKJ wrote:

4x4kayak2112 wrote:

mine does 88Mph

You got a Flux Capacitor with that thing? :ROTFL:

Jeepin_it_real · **Posted:** Wed Dec 08, 2010 12:19 am

topped my KK out at 116( not on a 1/4 mile just got it up there)....... wont go any faster with the stock tune... i plan on getting a B&G tune soon tho... so i'll keep you posted

STINGN · **Posted:** Wed Dec 08, 2010 1:27 am

my old truck was a lot bigger, a 98 rover...it was once going over 450mph

Twack · **Joined:** Fri Mar 19, 2010 1:05 pm **Posts:** 40

so far no one has "built" a KJ 3.7. No one has installed aftermarket high performance pistons or had a custom reground cam put in. Kenne bell used to make a super charger for it for about 6 months until they realized that the 3.7s piston rings could handle any extra power so they pulled it from the market. It could still be done wth wither turbo or super charger pretty easy but it would be pretty $$$$$ and since no one has done it you have no clue what road blocks you will come up agains in the future

JeepinJarhead03 · **Posted:** Wed Dec 08, 2010 2:20 am

Quote:

so far no one has "built" a KJ 3.7. No one has installed aftermarket high performance pistons or had a custom reground cam put in.

Not true, there's at least one with headjobs, valves, bump stick and forged pounders, injectors. throttlebody and other necessaries, bottom line is although I can't quote who due to lack of knowing who else, i'm pretty sure there's got to be someone else - simple fact they just may not be on the site or any site for that matter

not sure what all KY and J did to theirs specifically, i'd say with 1/4's and closed track or autoban stuff those two would be in the lead KJ3.7 wise

All i ever did with mine speed test wise was take it down a military aircraft runway a few times, usually those looking for quarter speeds don't add 600 lbs and more to the vehicle during the performance addition builds

Xodius · **Posted:** Wed Dec 08, 2010 4:39 pm

Coming back from Cali I hit around 112mph or so. Not the fastest I have gone in a Jeep but fastest in this one...wait...scratch that, I plead the 5th I did not admit to 112.

JeepinJarhead03 · **Posted:** Wed Dec 08, 2010 5:33 pm

all that really matters with a jeep is how much 'Oomph' it's got between idle and half of the usable RPM's

on the road it's just a matter of getting the pigs mooooovinnnng....

KJWildman · **Posted:** Wed Dec 08, 2010 5:42 pm

KJ_WHEELER_2010 wrote:

Whats the fastest anyones ever seen a KJ do the 1/4mi in?

I'll let you know come springtime after a trip to Milan Dragway! :twisted:

or am I disallowed due to unauthorized modifications? :twisted:

JeepinJarhead03 · **Posted:** Wed Dec 08, 2010 5:52 pm

after they catch a whiff of all the welding rods, the track might just tell you to go home lol

but i will tell ya what, come spring, I'll come roll the line with ya for the giggles

KJWildman · **Posted:** Wed Dec 08, 2010 6:19 pm

They let my buddy run his and it has lots of welding rod in it!

1975 Mercury Capri with 588 cubic inches of Ford Big Block on alcohol w/ a 300 shot!
1000HP running high 9's on DOT tires!!!

OK, back from the hi jack and back to the OP's post! :SOMBRERO:

Sorry KJ_Wheeler!

KJ_WHEELER_2010 · **Posted:** Wed Dec 08, 2010 8:25 pm

lol it's all good man. Man, I was kinda hoping to see some crazy twin turbo setups or something lmao :BANANA:

But I realize these arent made to hot rod

liquidxit2 · **Posted:** Wed Dec 08, 2010 9:38 pm

The problem is the powertech engine series. They are great, but are near their peak from the factory. The only way to increase performance is to redo the whole motor and use forced induction and at that cost and performance gain would have you sitting at probably around the level of a 4.7l HO with intake and exhaust. If you want speed a KJ or KK is not for you.

KJ_WHEELER_2010 · **Posted:** Wed Dec 08, 2010 9:55 pm

Like I said I know they aren't built for speed....but I like to see the oddball underdog thats puttin out crazy hp numbers sometimes.

ATXKJ · **Posted:** Wed Dec 08, 2010 10:24 pm

search for KY liberty and his NOS issues

jinstall · **Posted:** Thu Dec 16, 2010 2:22 pm

Loaded with people and I ran a 17.1 goofing off. Top speed was 128.63 or 207kph when the engine hit the rev limiter of 4200rpm. I regularly drove it between 100-120mph when traffic would allow. Even in 4x4 durning a heavy rain storm. Stock except for 245x70x16 tires

Crazy Fast KJs????

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