- Location
- Bourbonnais IL.
sup all. im dragging my TJ on to
because i dont really trust other sites. so if anyone has or knows someone that has been down this road, chime in.
Picked up this 97 TJ 2.5L on a trade. well the jeep is fine and all except its speed is topping out at about 50mph.
so it has a 2.5 5sp with 150k on the clock. 33s and stock 4.10 gears. heading down the highway in 4th i hit 50 kick up to 5th and i drop to 45. pedal to the metal im getting nothing more out of it.
things ive done so far. it had nothing but a resonator on top of the throttle body. no air filter system at all. took it all off and cleaned the hell out of the throttle body. slapped a cai style air filter directly on the throttle body. cut the cat off thinking it might have been plugged up. currently running straight pipe. new plugs, wires, rotor, cap. put sea foam in the oil,gas, and vacuum systems. did a compression test and pulled #1=160 #2=160 #3=175 #4=175.
all done, take it on the road, no change what so ever.
now i know that the 2.5 running 33s on stock gears is going to be a dog but 50mph?!? i should be able to get more out of it than that right?
obviously i know there are other options as far as motor swaps, gears, etc. but im trying to keep the budget down on this. basically the trade i had was worth about $1500 therefor this is a $1500 jeep and im not trying to drop 5k on an LS swap. i may think about gears but how much is that going to get me. spend a grand on gears so i can go 60 instead of 50?
suggestions?
![NAXJA Smiley NAXJA NAXJA](/data/assets/smilies/naxjasmiley.gif)
Picked up this 97 TJ 2.5L on a trade. well the jeep is fine and all except its speed is topping out at about 50mph.
so it has a 2.5 5sp with 150k on the clock. 33s and stock 4.10 gears. heading down the highway in 4th i hit 50 kick up to 5th and i drop to 45. pedal to the metal im getting nothing more out of it.
things ive done so far. it had nothing but a resonator on top of the throttle body. no air filter system at all. took it all off and cleaned the hell out of the throttle body. slapped a cai style air filter directly on the throttle body. cut the cat off thinking it might have been plugged up. currently running straight pipe. new plugs, wires, rotor, cap. put sea foam in the oil,gas, and vacuum systems. did a compression test and pulled #1=160 #2=160 #3=175 #4=175.
all done, take it on the road, no change what so ever.
now i know that the 2.5 running 33s on stock gears is going to be a dog but 50mph?!? i should be able to get more out of it than that right?
obviously i know there are other options as far as motor swaps, gears, etc. but im trying to keep the budget down on this. basically the trade i had was worth about $1500 therefor this is a $1500 jeep and im not trying to drop 5k on an LS swap. i may think about gears but how much is that going to get me. spend a grand on gears so i can go 60 instead of 50?
suggestions?
Last edited: