Topic: 3rd engine's the charm?

[stan98tj]

First engine died at 88,000miles, engine number 2 new/rebuilt from S&J Motors in Spokane Washington went in in 2008 now has 48,000 miles on it and is on its deathbed. 34% blow by in cyl 2, 46% in cyl 3 and 24% in cyl 4, this one looks like it's toast. Looks like i'll be pulling it out next week and sending it back to them. Luckily it's still under warranty. However, they will be determining if it is their fault or mine. If it's anything caused by the injectors, they won't cover it. At any rate, I need something to happen. The jeep is barely reliable. I hope to get one good run a Mabell this weekend, and then it's time to wrench on it-again.

So this makes: 2 engines, 2 power steering pumps, 1 transmission, 1 transfer case, 1 radiator.... Just Empty Every Pocket.
Of course, I still plan on swapping in the diesel, but HPA hasn't finished the conversions for auto transmissions yet. So, I'm stuck with the 4 banger for now.

[Jeffy]

You have to put it in perspective.  It's a 16 year old vehicle that doesn't have easiest life.  Though the engine not getting over 100K or even 200K is bit questionable.

[sharpxmen]

unless you have a heavy leaking injector or largely oversized or the other way around plugged or undersized i can't see how that would be the fault for blow-by.

[stan98tj]

You have to put it in perspective.  It's a 16 year old vehicle that doesn't have easiest life.  Though the engine not getting over 100K or even 200K is bit questionable.

the first engine died 4 days after I bought it at 88k. I don't know what the previous owner did to it, but he was only on 31s and apparently hadn't had them for long. He sold it to me with a cracked head and masked it enough so I wouldn't know it when I came to see it. This new motor has had more highway miles on it than trail miles. Less than 50k is a bit low, even for a jeep that is used offroad.

I have seen more than a few YJ 4bangers with their fair share of off road miles last 200k+
I wonder if there's a difference between the TJ and YJ 4cyls??

[jfrabat]

I have seen more than a few YJ 4bangers with their fair share of off road miles last 200k+
I wonder if there's a difference between the TJ and YJ 4cyls??

My YJ is at 150,000 and counting...

[stan98tj]

In hopes of exploring all my options, how hard would it be to swap in an XJ trany and motor into my jeep? I got a shop willing to dump a new 4cyl into it once I get the replacement one back from S&J, the guy figures that would be the easiest and cheapest. I tend to agree. But how much more complicated would pulling an xj motor and trany and swaping into the TJ be?

[Jeffy]

the first engine died 4 days after I bought it at 88k. I don't know what the previous owner did to it, but he was only on 31s and apparently hadn't had them for long. He sold it to me with a cracked head and masked it enough so I wouldn't know it when I came to see it. This new motor has had more highway miles on it than trail miles. Less than 50k is a bit low, even for a jeep that is used offroad.

I have seen more than a few YJ 4bangers with their fair share of off road miles last 200k+
I wonder if there's a difference between the TJ and YJ 4cyls??

Like I said, your Jeep hasn't had the easiest of lives.  I'd say yours is the exception and not the rule.

There's a lot between the engines.  The most obvious OBDI vs OBDII.  Different camps, and different programming for the ECM.  The core of the engine is the same.

In hopes of exploring all my options, how hard would it be to swap in an XJ trany and motor into my jeep? I got a shop willing to dump a new 4cyl into it once I get the replacement one back from S&J, the guy figures that would be the easiest and cheapest. I tend to agree. But how much more complicated would pulling an xj motor and trany and swaping into the TJ be?

It depends on what year the XJ is.  XJ's span across YJ's and TJ's so it could have either pre-OBDI, OBDI or OBDII.  All that work though, I'd be swapping in a 4.0L or even a V8 especially if you don't have to deal with inspections.

[stan98tj]

Like I said, your Jeep hasn't had the easiest of lives.  I'd say yours is the exception and not the rule.

There's a lot between the engines.  The most obvious OBDI vs OBDII.  Different camps, and different programming for the ECM.  The core of the engine is the same.It depends on what year the XJ is.  XJ's span across YJ's and TJ's so it could have either pre-OBDI, OBDI or OBDII.  All that work though, I'd be swapping in a 4.0L or even a V8 especially if you don't have to deal with inspections.

if it's an xj it would be a 4.0 going in. the aw4 trany would be the difference. Im wondering if that's a real pain in the ass to swap over or not. I don't think my 3spd auto would work with the 4.0 as I'm not certain it's the same as found in the 4.0 autos (could be, though). However, the overdrive in the AW4 is attractive and also required for the diesel swap.

[sharpxmen]

I wonder if there's a difference between the TJ and YJ 4cyls??

other than a missing hole in the head (for the temp sender) and supposedly better pistons on the TJ no difference, probably slightly different ground cam but the late YJ i think was pretty much identical to the TJs (some accessories are different but the rest of the part numbers are the same).

[stan98tj]

Now I have to wonder what happens at emissions? My vin will read for a 4cyl. The ECu from the XJ will obv read for a 6cyl. I prob won't pass. Plus I'll need ' 98 or newer.

[Jeffy]

Now I have to wonder what happens at emissions? My vin will read for a 4cyl. The ECu from the XJ will obv read for a 6cyl. I prob won't pass. Plus I'll need ' 98 or newer.

You're going to have to check with your state DMV/DOT.  Typically for those kind of swaps you're under the microscope and need to jump all of the hoops.  Did you not research this when you wanted to do the diesel swap?

[stan98tj]

 

You're going to have to check with your state DMV/DOT.  Typically for those kind of swaps you're under the microscope and need to jump all of the hoops.  Did you not research this when you wanted to do the diesel swap?

For the diesel I knew I would be in the clear as the motor would come from a 2004 Jetta or passat. From my understanding, HPA's kit allows you to pass emissions.
As for the XJ drivetrain swap, one of the more reputable shops in my area is advising against it due to all the custom work that has to be done to fit the AW4 into my jeep and wiring it up to shift as well as fitting a 4.0.

[Jeffy]

:ontopic:For the diesel I knew I would be in the clear as the motor would come from a 2004 Jetta or passat. From my understanding, HPA's kit allows you to pass emissions.
As for the XJ drivetrain swap, one of the more reputable shops in my area is advising against it due to all the custom work that has to be done to fit the AW4 into my jeep and wiring it up to shift as well as fitting a 4.0.

Actually it is on topic...  It's not just the year that's the problem.  If you did a XJ engine, you'd have to get retested and a new VIN would be issues since you would essentially be a 4.0L.  All that paperwork needs to be in order since you have emissions tests.  You will no longer be tested as a 2.5L.  This is also important when going with a diesel as all the paperwork will have to state it.  To the state you'd still have a 2.5L and since registration is tied into it you'd need to have that all cleared up.

To get an AW4 installed you'll probably need to modify the cross-member.  Check oldheep's thread in the Members Rides and see if he talks about his swap.  Though it sounds like that shop doesn't want to deal with a drivetrain swap at all.  They're pretty straight forwards as long as you do your homework.  Though if you're going to do a diesel, then I suggest you just doing that.  If they aren't going to do a transmission kit for your setup then swap transmissions then swap back when/if they ever do it.  Though I'm thinking they're not really pushing hard to support more transmissions.

[stan98tj]

Actually it is on topic...  It's not just the year that's the problem.  If you did a XJ engine, you'd have to get retested and a new VIN would be issues since you would essentially be a 4.0L.  All that paperwork needs to be in order since you have emissions tests.  You will no longer be tested as a 2.5L.  This is also important when going with a diesel as all the paperwork will have to state it.  To the state you'd still have a 2.5L and since registration is tied into it you'd need to have that all cleared up.

To get an AW4 installed you'll probably need to modify the cross-member.  Check oldheep's thread in the Members Rides and see if he talks about his swap.  Though it sounds like that shop doesn't want to deal with a drivetrain swap at all.  They're pretty straight forwards as long as you do your homework.  Though if you're going to do a diesel, then I suggest you just doing that.  If they aren't going to do a transmission kit for your setup then swap transmissions then swap back when/if they ever do it.  Though I'm thinking they're not really pushing hard to support more transmissions.

I have no clue how that "on topic" icon got in there. Sorry about that, must have hit it accidentally.

Anyway, the reason the shop is advising against it is due to wiring and rear d-shaft length. Aw4 to 4bsnger or 1.9tdi he figures the engine will be pushed fwd enough with the longer trany so it will fit. With a 4.0 i won't have the room. He says it's possible, but it's gonna cost more and why do 2 complicated swaps (aw4/4.0 now, 1.9l/aw4 later).
Further, I've begun to think for the diesel I may want to change my platform completely. I'm thinking of swapping it into an LJ instead of my jeep and retaining my axles for the LJ. Then selling my TJ with the LJ axles and my 33s. I'll gain wheelbase and cargo space from the LJ and it won't be as difficult fitting the AW4.

[Jeffy]

I have no clue how that "on topic" icon got in there. Sorry about that, must have hit it accidentally.

Anyway, the reason the shop is advising against it is due to wiring and rear d-shaft length. Aw4 to 4bsnger or 1.9tdi he figures the engine will be pushed fwd enough with the longer trany so it will fit. With a 4.0 i won't have the room. He says it's possible, but it's gonna cost more and why do 2 complicated swaps (aw4/4.0 now, 1.9l/aw4 later).
Further, I've begun to think for the diesel I may want to change my platform completely. I'm thinking of swapping it into an LJ instead of my jeep and retaining my axles for the LJ. Then selling my TJ with the LJ axles and my 33s. I'll gain wheelbase and cargo space from the LJ and it won't be as difficult fitting the AW4.

With an LJ, you'll have a 4.0L which might be all you really need.  I agree that the additional space is nice and would make swapping drivetrain much easier.  Not to mention, you can transfer much of what you have to the new platform.

The difference between a 32RH and a AW4 is only 1" so I doubt you'd have any issues even with a SWB.  With a 42RLE, I wouldn't bother swapping in a AW4 anyway.  I think I read somewhere the 42RLE is 30" so 5" more then a AW4.

Also have you got any confirmation on when/if Cody4x4 will have an AW4 kit available?  Are they even working on it?  I'd make sure they're not stringing you along.