SilberCobra

Which is best and where can you get it?

Here is a pic of my engine.
https://dl.getdropbox.com/u/1937524/Jeep/000_0451.JPG
It is a straight 6 4.0l
Of course after repairs.

Thanks
Silber

ol"blue

Turbo 4.0L >>->http://www.jpmagazine.com/techarticl...rbo/index.html

Supercharged 4.0L >>->http://www.4wheeloffroad.com/techart...kit/index.html

mikdre

Kenny Bell makes an awesome supercharger. Of course its like $6000. Any turbo kit will have to be custom and therefore big $$$$.

http://www.kennebell.net/supercharge...wrangler40.htm

fantic238

Silber, you need an engine with very little miles (better new) on it to install a supercharger, an engine with lots of miles won't last long.
Avenger supercharger makes a kit for the 4.0
http://www.avengersuperchargers.com/

SilberCobra

Its actually only 2 years old, when my wife bought it, it was a new engine.

(Eckks-Jay)

Mileage won't hurt the motor, you just need a well maintained engine to use.

I got a buddy that drives a supercharged wrangler with 248k, the motor had about 215k when he installed it. so far, no probs.

Mileage and reliability are not closely related, just maintenence and reliability.

Turbo X_J

You might be interested in this thread:
http://www.jeepforum.com/forum/f11/5-0-xj-501878/

Just use a 5.0 Ford and be done with it, much better support when it comes to parts. If that doesn't do it for you add a hair dryer, 16 psi, and methanol injection, that should liven things up enough. If not, I have more ideas.

fantic238

Worn piston rings, blow by and bearing tolerance have nothing to do with maintenance.
After many miles the engine just isn't tight anymore.
The stress on pistons and rods of a supercharger can be 4-5 times more than normal depending on boost pressure.
An old engine will wear out fast. Very fast.
Another consideration: spending 3 grands for a supercharger kit on an old engine doesen't seem very clever to me.
Especially when you can rebuild a 4.0 completely with less than 500.

93XJRay

IMO i wouldnt even bother putting either on a 4.0. to each his own though. good luck if you do it.

9XJSPORT7

Hey Just to let you guys know I contacted Mike over at Kenne Bell today and he said they don't make that kit anymore cause they dont have a compressor small enough which sucks cause that was one awsome kit.

Donnie_K

lol, after reading other's opinions on this thread, I decided to throw in my 2 cents... why not just get a hammerhead stroker motor for it?

4wheeldrivenewbie

i have a 89 with 86 thou miles on it u wanna buy it lol