Jeep 4 cylinder 2.5 Power Mod question

[spistols]

I have a '93 2.5L manual trans 4x4 Cherokee. Has now about 183K. Body is excellent with no rust, AC cranks cold air out, and is good for off roading, so that is why I am keeping it.

However, the 2.5L is a dog when it comes to power. Did a tune-up: cap, rotor plugs, etc., and runs slightly better but still a dog. 75mph on the highway takes time to get up to.

Read that swapping to a 4.0 of the same year may be a chore or rather, more of a headache.

What is a good, simple, but noticeably effective mod to the motor to give me at least enough power to stop considering a complete motor change out?

Would new fuel injectors be an answer- and if so, exactly what type would I need?

 

[whiskerz]

Change the cam , Crane grinds low rpm torque cams better than anyone . The cam for you engine has to be special ordered direct from them . A slight clean up of the ports (gasket match )in the head and intake will help . If you do too much you kill low end power that you need . A header maybe , There is not much that you are going to do that is a bolt on . There is very little aftermarket support for the Jeep 4 . New injectors will take an ECM reflash . Again I don't think anyone is doing this for the 4 cylinder . The other option is to regear and give up road speed

 

[patracy]

I can put lipstick on a pig, but it'll still be a pig....

 

[Durango00]

Try changing the gears in the rear end

 

[8675309]

fit up a "test pipe" where the cat would be for Off Road Use Only
+ a cheap cold air intake

 

[Lockout]

not meant for power it's a 4 cylinder lol

either put a 350 in it or close thread lol


gears would be your friend here

 

[spistols]

Not looking for hi-perf , but just don't want a lawn mower engine trying to power a car.

 

[gober13]

4.56 gears, cold air intake, exhaust. What size tires are you running?

 

[Squiddley]

You can swap out the stock injectors for some from a 4.0 ,I think it gives about 10 hp,look on some Jeep forums they have many tricks for increased performance.

 

[logcabinman]

4 cyl. in a Cherokee is not good. Too heavy for torque curve as you will always be holding the gas pedal down. .