4.0 Engine ID question

[JACKED88]

Is there a date code cast into the side of the engine block on a 4.0? Such as an 01, 02 and so on.

[Geonovast]

Yup. I believe it's on the passenger side, about 2/3 the way back, just under the head.

[JACKED88]

Yup. I believe it's on the passenger side, about 2/3 the way back, just under the head.

Thanks!!! So what are the numbers on the driver side near tha back just above the oil pan?

[Geonovast]

Those might be it. I don't remember if the block was upside down on the stand or not when I was looking at them.

[JACKED88]

Yup. I believe it's on the passenger side, about 2/3 the way back, just under the head.

Thanks!!! After doing some research I found out that date coding doesnt tell me what i need to know.

I'm trying to find out if the intake and exhaust manifolds from a 99 WJ will work on a 2005 Wrangler motor? If they will bolt up, is there any other reason why an 05 motor with the 99 WJ manifolds can't be installed in a 99 WJ?

From what I read, both motors are tha same. Same block. Same head. Different manifolds. From what I can tell the only reason they won't interchange is due to manifold differences and some sensor locations. Wouldnt that problem be solved by swapping the manifolds?

[Oizarod115]

that should be a direct fit piece. nothing major changed between those years in the basic engine/head

[JACKED88]

that should be a direct fit piece. nothing major changed between those years in the basic engine/head

Oh yeah. Well then that pisses me off!!! :fs1:

 

Remember my "Water in the oil" thread about that j/y motor my son bought. After tha j/y decided we didnt do the head gasket right and decided to do it again themselves, it was still getting water in the oil. That motor obviously had an internal crack so we're getting it replaced. We went to tha yard to see what other vehicles he had with a good motor in um. They've got an 05 Wrangler Limited that had rolled with minimal front damage so we told um we want tha motor out of it. First thing he says is that motor won't work claiming the accessory bracket holes are different. I tried to argue while he pointed at his computer showing me what years were a direct swap.

They've now installed a motor that was sittin under a carport without a valve cover or manifolds on it. We don't have a frickin clue what year it is nor how many miles are on it. Last time I talked to him tha motor was in but they couldnt git it to crank/start.

Needless to say I'm goin out there tomorrow and one of two things are gonna happen. Either their puttin that Wrangler motor in it with my sons original 99 manifolds or I'm gittin his money back along with our original motor.

This crap has been goin on for 3 weeks now. Enough is enough. :fs1: :fs1: :fs1:

 

Oh, just so you know ...... after the 2nd head gasket failed to fix tha water/oil problem, lets just say we negotiated for them to pull the cracked motor back out and install the exchange motor.

Probobly not one of my better ideas. :wall: What can I say. I was pissed and not looking forward to doing another motor swap.

[Oizarod115]

I'm pretty sure it's the right stuff, maybe someone will back me up, but the intake didn't change from 99 to the end of them so that'll be the same, the wrangler will have different accessories yeah, but your stuff should bolt to it still

[JACKED88]

I'm pretty sure it's the right stuff, maybe someone will back me up, but the intake didn't change from 99 to the end of them so that'll be the same, the wrangler will have different accessories yeah, but your stuff should bolt to it still

Thats what I thought with the exception of thinking we'd have to use his 99 manifolds.

I'm done jackin around that frickin j/y owner. Come tomorrow I'll either have my sons money back and his jeep sittin in tha driveway (without a frickin motor in it) or I'm gonna stay there till I see that Wrangler motor gittin installed. And yeah, I'm gonna mark tha damn motor before I leave.

I know he's still gonna argue that motor won't work. I need to find something that proves it will work so I can insist he installs it or gives it to me so I can install it.

I hate to do this to ya but I've gotta be sure I have tha right ammo before I shoot that @$$ hole j/y owner. ....... So your sayin everything on that 05 except the accessories/brackets will bolt up and plug in to his 99 WJ wiring harness and run. Right??? Jeep didnt change any of the electrical plugs, use different sensors with different plugs, relocate anything like sending units, or anything else ????????

I know its a lot to ask but as before I just need to be sure. Otherwise I'm gonna look and sound like a total idiot if I'm not positive of what I'm fightin for. At this point I'm not gonna be satisfied till I have that 05 motor installed in my sons Jeep.

 

You guys have shared a lot of info with me in tha short time I've been on CC and I truely appreciate all of it. However this time is a little different. We've got over $900 dollars invested and riding on this one and definately can't afford to git screwed.

 

Thanks again.

Robert and son

[HOrnbrod]

All the block and head casting number info is on the strokers forum and which manifolds will interchage with which head. It's late and I'm not going to try to find it tonight, but I seem to remember there was a difference when Jeeps went from OBDI to OBDII, but it's mostly sensors. I stuck w. OBDI and am running a 96 block w. a 94 head w. a 2000 intake manifold and 04 TJ power steering. TJ's did have differences in other accessory mount brackets though. Go over to the strokers forum and do a search...........

[JACKED88]

Ut oh ....... I hope this doesnt make a difference for what I'm trying to do but ....... my son has a 99 WJ not a ZJ. (I can't keep track of all these cj, yj, zj, xj, wj, mj, and however many others letter badges there are)

How bout this ..... His Jeep is a 1999 Grand Cherokee Larado 4x4 with a 4.0 and auto trans.

 

Same question, different model vehicle.

 

And yes. Before other people read it, I edited my questions to WJ. Sorry for tha mix-up.

 

BTW ..... I read something about tha water pump bolts being different on an 05 Wrangler motor. How can they be different if the block are tha same? Also read that the motor mount bolts on the WJ are metric where the Wrangler "TJ" are standard. Not a big deal, just a difference to be aware of.

[HOrnbrod]

See if this helps:

 

http://www.jeepstrokers.com/forum/viewforum.php?f=34&sid=2257e9b209ecf498ca488d6e8477e6ff

[terrawombat]

The '05 Wrangler engine will work without a doubt in my mind. The Wrangler block is identical to your original '99 Cherokee block - with the exception of the rear main seal. A very small redesign, but doesn't even matter for your purposes unless in the future you decide that you want to replace the rear main seal...just need to make sure you get one for a '00+ 4.0L engine. Yes. some of the accessories are different - the Wrangler mounts some things in different spots. The cooling fan is attached directly to the water pump instead of it being off to the side like the Cherokee. The JY owners fancy smancy computer program (it's probably the Hollander software, which I personally don't care much for) isn't technically wrong...the Wrangler engine won't be a direct bolt-in replacement, but you CAN use every accessory, mounting bracket, bolt, nut, etc from your original Cherokee engine to make it work on the Wrangler engine - all of the mounting points are all present on the '05 Wrangler block.

 

I have an '01 Wrangler and an '01 Cherokee block sitting side-by-side right now and, yes, while the accessories mount in different places, the blocks are identical.

 

Edit: Just realized it is a WJ. I don't think it should make any difference, though. The blocks are identical...just use all of the original '99 components on the '05 block and you should be good to go as far as electrical connectors and whatnot.

 

Question: Did the original 4.0L engine from your sons WJ have a distributor or coilpacks for the ignition? If it has coilpacks, the reason for the water in your oil was most likely due to a cracked cylinder head. A replacement of the head gasket wouldn't have fixed that - a completely new cylinder head would have.

[JACKED88]

 

Question: Did the original 4.0L engine from your sons WJ have a distributor or coilpacks for the ignition? If it has coilpacks, the reason for the water in your oil was most likely due to a cracked cylinder head. A replacement of the head gasket wouldn't have fixed that - a completely new cylinder head would have.

Thank you for the verifying that 05 motor interchanging into my sons 99 WJ.

As for tha head and or gasket, we had the head checked and redecked at a machine shop. They didnt find any cracks in it yet the moto was still getting water in the oil. That engins had been hit hard in the front. Hard enough to have cracked the harmonic balancer and bent the water pump pully back against the timing chain cover. We replaced tha water pump and pully. All we could figure from that point was that the water jacket must have cracked and it opens up or expands once the motor gets warm.

[terrawombat]

Ah, I wasn't aware there was physical damage to the engine from an accident. If that was in the thread, I must have overlooked it.

 

So, did your sons '99 4.0L engine have a distributor or coilpacks? I'm curious because I've heard that the '99 WJs got the coilpacks, but they weren't introduced until '00 for the XJ and TJ...was just wondering.

 

I also had to deal with a know-it-all junkyard owner when I was searching for a motor for my '01 XJ. I wanted an older engine from the '97 to '99 years because those came with the older style cylinder heads (the cylinder heads in '00 and '01 are notorious for cracking) and when I told him that, he said his 'special' computer program says it won't work. I told him I was well aware of the fact it won't be a direct drop-in replacement and that I was more than capable of making the necessary changes to make it fit. He threatened to void any warranty because I was going to be doing significant modifications to the engine. I told him he was out of his mind and that the only thing I needed to do was make an exhaust adapter plate to mate the older head to the newer style exhaust manifold. He finally took my word for it that it was going to work and sold me the engine - which turned out to have a blown head gasket, but that's a whole other story...I'll save that for another day.

[JACKED88]

Ah, I wasn't aware there was physical damage to the engine from an accident. If that was in the thread, I must have overlooked it.

 

So, did your sons '99 4.0L engine have a distributor or coilpacks? I'm curious because I've heard that the '99 WJs got the coilpacks, but they weren't introduced until '00 for the XJ and TJ...was just wondering.

 

.

Yes, it has the coil packs meaning it has the newer style head with tha smaller exhaust ports and bosses for tha coil packs.

You didnt miss anything. I didnt mention tha frontal wreck in this thread because I had already done so in my "Water in oil" thread.

 

You really need to keep up. LOL!!! Just messin with ya. Thanks again for your help.

 

BTW, I'm sorry to say all this may have been for nothin. We're going to pick up his Jeep in a few minutes. J/y claims its ready having installed that motor that was on a pallet under a shed. Its supposed to be an 02 however tha milegae is unknown.

I sware If that motor has any kind of knock or tha slightest hint of smoke commin out of it I'm gonna tell um where they can stick it.

I'll let ya know later tonight how it turns out.

Still pisses me off that they've had tha Jeep for two frickin weeks jackin with this motor. Had tha SOB listened to me and installed that 05 motor like I wanted him to, we coulda had it back a week ago. :fs1:

[JACKED88]

Just got back from across town pickin up my some Jeep. Tha motor they put in it sounds pretty good. Has little upper end noise but nothing out of tha norm for an I6. Before we said our fair wells to tha j/y owner we took it for a test drive with me following my son around for a few blocks watchin for smoke but I didnt see any.

Tried to git tha j/y to give us another 30 days of warrenty but he'd only give us two more weeks. I suppose if something is gonna go wrong it'll do in that time or less.

I was sure to tell tha owner I hoped I'd never see him again and if I did he was either doin it again or givin us our money back. He said he wasnt doin it again and that this should be a good motor. I guess time and a few miles will tell.

 

 

Thanks again for yalls help. Had I needed to git into it with tha man at least I woulda had the knowledge to put up a good fight.

 

Robert