Should I get a new engine or Move on to another jeep?
Member
Joined: Jun 2010
Posts: 157
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From: kankakee,il
Year: 97
Model: Cherokee
Engine: 30 over 4.0
if ou run it till it blows there a good chance you will damage the block it self,best bet is to just park it now if you cant or dont have time to do it now.
Thread Starter
CF Veteran
Joined: Jul 2010
Posts: 1,971
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From: WNY
Year: 1999
Model: Cherokee
Engine: 4.0 High Output
Yeah but the problem is that i need a car to get around, so im sort of out on that option....theres a nice 5-speed about 2 hours away for $1000 but i just dont know what to do if i get screwed on that to. Applying for another job tomorrow, hopefully two jobs will increase the money flow towards the jeep (hopefully)
If you are currently driving it and it's making a knocking noise and has been for a while I highly doubt that you have a spun bearing. I spun the #6 rod bearing in my XJ and it got drove at a idle for a few miles (less than 5) and when I pulled it down it was literally on the brink of letting go. I suggest you park the Jeep until you can fix it.
Depending on the mileage of the motor and how well it was maintained you may be hearing piston slap. I haven't read your thread about the noise so I'm just speculating.
Thread Starter
CF Veteran
Joined: Jul 2010
Posts: 1,971
Likes: 5
From: WNY
Year: 1999
Model: Cherokee
Engine: 4.0 High Output
I agree, if you really have a spun bearing it will take a very, very short time before it blows. And when it does there is a very good chance it will take the block with it.
If you are currently driving it and it's making a knocking noise and has been for a while I highly doubt that you have a spun bearing. I spun the #6 rod bearing in my XJ and it got drove at a idle for a few miles (less than 5) and when I pulled it down it was literally on the brink of letting go. I suggest you park the Jeep until you can fix it.
Depending on the mileage of the motor and how well it was maintained you may be hearing piston slap. I haven't read your thread about the noise so I'm just speculating.
If you are currently driving it and it's making a knocking noise and has been for a while I highly doubt that you have a spun bearing. I spun the #6 rod bearing in my XJ and it got drove at a idle for a few miles (less than 5) and when I pulled it down it was literally on the brink of letting go. I suggest you park the Jeep until you can fix it.
Depending on the mileage of the motor and how well it was maintained you may be hearing piston slap. I haven't read your thread about the noise so I'm just speculating.
Are you guys just padding post count or what? Do you have any real advice to offer? Explain yourselves. Make your posts mean something!
Seasoned Member
Joined: Jan 2010
Posts: 390
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From: Chicago
Year: 1994
Model: Cherokee
Engine: 4.0
This may be the worst advice ever but here we go. I witnessed my neighbor's rod knock in his 93 wrangler, it sounded like marbles in a coffee can. He simply removed his oil pan marked and unbolted his rod caps found the paper thin bearing on number 2 piston. Went to the parts store and snagged a set of clevite 77 (standard bearing size) and a roll of 1000 grit emery cloth. He used the emery cloth on the three suspect crank areas working it all around the scored shaft he was using a cutting oil on the paper. I was thinking this isn't gonna work for sure, after getting it back together and starting it I was amazed. It was quiet as new and he still was driving it as a dd years later when I moved. I would say if it hasn't thrown the rod yet and your gonna replace it anyway give it a shot. The worst that could happen is that someone will call you a redneck! Get a friend to help, trick him with a beer offer. I find it tons easier with a tool gopher, when your under a cherokee.
Thread Starter
CF Veteran
Joined: Jul 2010
Posts: 1,971
Likes: 5
From: WNY
Year: 1999
Model: Cherokee
Engine: 4.0 High Output
This may be the worst advice ever but here we go. I witnessed my neighbor's rod knock in his 93 wrangler, it sounded like marbles in a coffee can. He simply removed his oil pan marked and unbolted his rod caps found the paper thin bearing on number 2 piston. Went to the parts store and snagged a set of clevite 77 (standard bearing size) and a roll of 1000 grit emery cloth. He used the emery cloth on the three suspect crank areas working it all around the scored shaft he was using a cutting oil on the paper. I was thinking this isn't gonna work for sure, after getting it back together and starting it I was amazed. It was quiet as new and he still was driving it as a dd years later when I moved. I would say if it hasn't thrown the rod yet and your gonna replace it anyway give it a shot. The worst that could happen is that someone will call you a redneck! Get a friend to help, trick him with a beer offer. I find it tons easier with a tool gopher, when your under a cherokee.
Thread Starter
CF Veteran
Joined: Jul 2010
Posts: 1,971
Likes: 5
From: WNY
Year: 1999
Model: Cherokee
Engine: 4.0 High Output
Well since everyones having so many questions about it i thought id make it alittle easier on you guys, i made a quick video so you guys can hear the engine and took it from different angles around the car and inside it for a second, my microphone wasnt that good considering i was using my phone so the knock is louder in life but anyway heres the video:
Junior Member
Joined: Jul 2010
Posts: 33
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From: Oceanside Ca
Year: 1988
Model: Cherokee
Engine: 4.0
I bought a Titan 4.7 recently and i can say without a doubt that they are the worst motor you can possibly get, i had a pro shop install it and straight away it had problems, valve train, cam, the shop had to make most of the sensors then trying to get Titan to warranty ANYTHING is like pulling teeth you have to pay the diagnostic fees and then send the sheet to Titan then after calling for 2 WEEKS every day they came back with that they didn't think it was their fault, it was the shop who installed, the tech who did the install was sure happy to hear that, anyway finally got Titan to take it back , on my shipping fee of course, and so far i think i got 500 of the 3200 i paid. Bottom line run far and fast from Titan!
Thread Starter
CF Veteran
Joined: Jul 2010
Posts: 1,971
Likes: 5
From: WNY
Year: 1999
Model: Cherokee
Engine: 4.0 High Output
That really doesn't sound like a spun bearing. but this does:
http://www.youtube.com/watch?v=DfJIpiQZtR4
http://www.youtube.com/watch?v=DfJIpiQZtR4
Thread Starter
CF Veteran
Joined: Jul 2010
Posts: 1,971
Likes: 5
From: WNY
Year: 1999
Model: Cherokee
Engine: 4.0 High Output
I bought a Titan 4.7 recently and i can say without a doubt that they are the worst motor you can possibly get, i had a pro shop install it and straight away it had problems, valve train, cam, the shop had to make most of the sensors then trying to get Titan to warranty ANYTHING is like pulling teeth you have to pay the diagnostic fees and then send the sheet to Titan then after calling for 2 WEEKS every day they came back with that they didn't think it was their fault, it was the shop who installed, the tech who did the install was sure happy to hear that, anyway finally got Titan to take it back , on my shipping fee of course, and so far i think i got 500 of the 3200 i paid. Bottom line run far and fast from Titan!
Well its not that bad but it definetly is loud enough to noticable and as i said before its louder in life then it is in the video and if its not a spun bearing then do you think you might know what it could be? I was almost thinking rod knock but i really just dont know, ive gotton so many different answers 

Junior Member
Joined: Apr 2010
Posts: 57
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From: houston tx
Year: 1993
Model: Cherokee
Engine: 4.0 high output
get a 350 chevy and running gear out of a wrecked truck. its cheaper and more powerful than a stroker. plus you wont have to worry if other parts are going to break because its all stock.the mileage would be almost the same and you can buy adapters for the axles. its well worth it from what i hear. try this link<
Last edited by 93,2door,xj; Aug 14, 2010 at 05:07 PM.


