OP
Well, there goes the engine
- Thread starter SamwiseGamJeep
- Start date
We don’t know, sellers never disclose their mistreatment. Just curious if anyone has ideas.
Cheap oil was mentioned.
what oil do most of you guys prefer?
I use a high mileage conventional oil to help with a RMS leak. IMO, the change interval is more important than brand, etc. There are many existing threads arguing the merits of oil A vs oil B.
If you want to get into the nitty gritty, you can send your oil in for analysis.
Yes same here on oil choice and agree, frequency matters.
I change mine every 3000 miles. I use high mileage oil and normally whichever is on sale. No synthetic or synthetic blend, only conventional oil. I use the Mopar oil filter.
Man im sorry to hear, my motor blew at 96k
cylinder #2 piston skirt broke when getting up to speed about 50% throttle @3500rpm
OP
Oh man, that's even worse. What year is your TJ?Man im sorry to hear, my motor blew at 96k
OP
01, I had the bad head. I ended up rebuilding it since hearing many lawsuit horror stories with reman engines
ejay
TJ Addict
Seems to be an issue with 99 model 4.0. My old 99 Cherokee Classic had the piston skirt shatter issue but I bought it that way. I ended up getting a junkyard engine with 50k documented miles out of a wreck that survived the war of cash for clunkers. Just be thankful you don't have a 01 with the 0331 head, I guess.
I can say that if this happened to me, I'd probably just pay to have the engine completely rebuilt instead of just swapping the bearings. Maybe get a stroker.
I can say that if this happened to me, I'd probably just pay to have the engine completely rebuilt instead of just swapping the bearings. Maybe get a stroker.
OP
Mine is a 99. Guess the Machine shop head rebuild will take care of it, if its an issue.
What makes this story sickening is imagine a meticulous guy , with good equipment and resources, bringing every system in this TJ up to stock or better condition, gets it “done” if there is such a thing....and a knock starts. That is this guy.
OP
Thanks buddy. I am pretty sad about it. You know I poured my guts into it.
does yours have the 1330 head? I can't remember the exact year range, but they're thin in some places and prone to cracking. If you do have that head, I'd get the clearwater replacement since you're gonna be in that deep anyways.
OP
OP
And lord I hope not. I Just relayed this to the Mechanic, he'll see if he can identify it.
I don't need any more cost at this point.
Its shitty, really not trying to add to the pile. I'd just hate to see you have all this work done, then have the head crack...
the casting number is right below where the oil fill port is on the valve cover
OP
I think the clearwater one is 600 and seems to be regarded as the best. Good news though, looks like that was only a 2000/2001 year range problem, so you just missed it!!
https://wranglertjforum.com/threads/how-to-identify-0331-or-tupy-head.8112/
and i had the casting number backwards
