Potential project, looking for info.

[newtotheblueoval]

Just to re-cap, since I never really got the answer to the original question.
FIRST:

I'm not looking for a power increase.
I would be using a 4.0L OHV engine.
I would like to do a quick, weekend engine swap, so "fixing" my current engine's problems would be out.
Just looking for reliable, quiet ,stock power levels.
Lowest cost involved.
Would like to find a running 4.0L OHV, and swap in with as many current 2.9L parts as possible.
Would the stock 2.9L intake, and exhaust manifolds work? Sensors all swap to similar locations? Original ECM usable?
Please, if you don't know, or understand the question, please don't reply.

 

[sheep herder]

Just to re-cap, since I never really got the answer to the original question.
FIRST:

I'm not looking for a power increase.
I would be using a 4.0L OHV engine.
I would like to do a quick, weekend engine swap, so "fixing" my current engine's problems would be out.
Just looking for reliable, quiet ,stock power levels.
Lowest cost involved.
Would like to find a running 4.0L OHV, and swap in with as many current 2.9L parts as possible.
Would the stock 2.9L intake, and exhaust manifolds work? Sensors all swap to similar locations? Original ECM usable?
Please, if you don't know, or understand the question, please don't reply.

You'll need a 4.0 ECM.

 

[91stranger]

Whats wrong with the engine in it now? If it runs and drives then run it... You said you just want a beater daily driver but want to do an engine swap? Not sure how doing an engine swap is a quick weekend swap. Your GOING TO have issues if you do a swap with a junkyard engine I assume. So swapping a running engine for an "unknown condition" engine does not sound like a smart fix. Do you buy a new vehicle when the oil needs changed? No you change the oil and move on. Same principle in my eyes.

 

[Dirtman]

Engines is goes vroom.

 

[Ranger850]

I did not know "farts stink"

 

[Dirtman]

 

[rusty ol ranger]

Just to re-cap, since I never really got the answer to the original question.
FIRST:

I'm not looking for a power increase.
I would be using a 4.0L OHV engine.
I would like to do a quick, weekend engine swap, so "fixing" my current engine's problems would be out.
Just looking for reliable, quiet ,stock power levels.
Lowest cost involved.
Would like to find a running 4.0L OHV, and swap in with as many current 2.9L parts as possible.
Would the stock 2.9L intake, and exhaust manifolds work? Sensors all swap to similar locations? Original ECM usable?
Please, if you don't know, or understand the question, please don't reply.

Youll need everything from the 4.0 truck, as well as ECM and wireing harness. Not sure what trans you have, while the 2.9/4.0 use the same motor mounts/bellhousing, unless you have an M5OD trans count on a trans swap in fairly short order too.

If all you want is a quick weekend swap and stock power levels just buy another 2.9. I dont believe tbe exhaust manifolds are the same and the intakes wont swap either.

The 4.0 and 2.9 are about the same for reliabilty. The 4.0 is a bored/stroked 2.9 with (slightly) better heads and (marginally) more power.

Do what you want but its a waste of time and money to do the swap for the reasons you are stateing.

 

[newtotheblueoval]

Whats wrong with the engine in it now? If it runs and drives then run it... You said you just want a beater daily driver but want to do an engine swap? Not sure how doing an engine swap is a quick weekend swap. Your GOING TO have issues if you do a swap with a junkyard engine I assume. So swapping a running engine for an "unknown condition" engine does not sound like a smart fix. Do you buy a new vehicle when the oil needs changed? No you change the oil and move on. Same principle in my eyes.

Youll need everything from the 4.0 truck, as well as ECM and wireing harness. Not sure what trans you have, while the 2.9/4.0 use the same motor mounts/bellhousing, unless you have an M5OD trans count on a trans swap in fairly short order too.

If all you want is a quick weekend swap and stock power levels just buy another 2.9. I dont believe tbe exhaust manifolds are the same and the intakes wont swap either.

The 4.0 and 2.9 are about the same for reliabilty. The 4.0 is a bored/stroked 2.9 with (slightly) better heads and (marginally) more power.

Do what you want but its a waste of time and money to do the swap for the reasons you are stateing.

 

[newtotheblueoval]

Whats wrong with the engine in it now? If it runs and drives then run it... You said you just want a beater daily driver but want to do an engine swap? Not sure how doing an engine swap is a quick weekend swap. Your GOING TO have issues if you do a swap with a junkyard engine I assume. So swapping a running engine for an "unknown condition" engine does not sound like a smart fix. Do you buy a new vehicle when the oil needs changed? No you change the oil and move on. Same principle in my eyes.

Did you read this thread at all?

 

[rusty ol ranger]

Did you read this thread at all?

I did. And i answered your question.

 

[Dirtman]

Personally I love to read.

Based on Newtotheblueoval's response to my previous letter, I believe it's safe to say that through under-informed, over-determined generalizations and contradictory, fragmentary insights that sometimes became hobby horses, Newtotheblueoval has concluded that he can absorb mana by devouring his revilers' brains. The issue here is that a reporter recently observed him recovering the dead past by annihilating the living present. That's just Newtotheblueoval being Newtotheblueoval, of course. It says nothing about how for the first time ever, a majority of puzzleheaded perverts have been questioning their role in helping Newtotheblueoval help sappy invidious-types back up their prejudices with “scientific” proof. I think that we should take advantage of this historic opportunity and break the mold and stray from the path of conventional wisdom. Without going into all the details of how that can be accomplished, let me say simply that some reputed—as opposed to reputable—members of Newtotheblueoval's fraternity of odious scofflaws quite adamantly warrant that hedonism is the only alternative to hooliganism. I find it rather astonishing that anyone could avow such a thing, but then again, it is hardly surprising that Newtotheblueoval wants to rewrite and reword much of humanity's formative works to favor tammanyism. After all, this is the same prissy rampallion whose randy prattle informed us that the health effects of secondhand smoke are negligible.

I used to think it would be possible to work out a compromise with Newtotheblueoval. Unfortunately, the terms that he insists upon are so absolutely unacceptable and so much in contradiction with earlier agreed-upon points that one can conclude only that Newtotheblueoval is interpersonally exploitative. That is, he takes advantage of others to achieve his own nocuous ends. Why does he do that? The answer is too well-known to bear repeating, but I should comment that Newtotheblueoval wants us to feel sorry for the miserable wheeler-dealers who use our weaknesses to his advantage. I myself profess we should instead feel sorry for their victims, all of whom know full well that in a rather infamous speech, Newtotheblueoval exclaimed that two wrongs make a right. (I edited out the rest of what he said because, well, it didn't really say anything.) On a closing note, I hope that this letter, while incomplete, informal, and having no authority except its own inner strength and conviction, has clearly demonstrated to you that as part of his latest power grab, Newtotheblueoval . . has been desecrating religious objects.

 

[4.0blue98]

If you want quiet then don't get a 98 or newer 4.0L OHV. Mine has sounded like a diesel since I got it in 2003. Just google "can of marbles 4.0L OHV".

Runs well, just noisy and built that way...

 

[Snoranger]

Just to re-cap, since I never really got the answer to the original question.
FIRST:

I'm not looking for a power increase.
I would be using a 4.0L OHV engine.
I would like to do a quick, weekend engine swap, so "fixing" my current engine's problems would be out.
Just looking for reliable, quiet ,stock power levels.
Lowest cost involved.
Would like to find a running 4.0L OHV, and swap in with as many current 2.9L parts as possible.
Would the stock 2.9L intake, and exhaust manifolds work?No. Sensors all swap to similar locations?No. Original ECM usable?No.
Please, if you don't know, or understand the question, please don't reply.

The intake won’t swap. The exhaust manifolds might, but you’ll probably break some bolts in the heads trying to remove them from the new motor.... just use the ones that are already on it. The y pipe may line up.
A few of the sensors will be the same. (Oil press, coolant temp, etc.) For the most part the new ECM will be looking for 4.0l sensors, not 2.9l.
The 2.9l ecm will not work with the 4.0l some without major hurdles... that would take it out of “simple swap” territory.
If you really want a 4.0l, find a complete running engine intake to oil pan, with manifolds, harness, ecm, and swap it in.

 

[PetroleumJunkie412]

Have a good running 4.0 ohv with literally everything you'd ever need to go with it on a stand.

It has urine stains on it.

No, you can't have it.

 

[PetroleumJunkie412]

Wh

I'm not looking for a power increase, at all, I would actually prefer a 4 cylinder. I'm looking for a quiet , reliable engine, using as many original factory parts. My understanding is the OHV 4.0 does not have the valvetrain issues of the 2.9, so I thought any 4.0 OHV would be an improvement over another 2.9 of unknown history .

Look, we're trying to help. Your thinking is not correct, and there is no answer you'll like.

If kept clean, a 2.9 will run a few hundred thousand miles no issues. Mine would chirp 31s with a dead cam at 285,000 miles.

If you want the noise to go away, melling 328 oil pump, free floating rockers, new quality lifters, stock cam, cloyes timing set, pushrods, and clean the piss out of your rocker shafts.

The 2.9 and 4.0 are cousins, and easy to swap for one another, but the 4.0 is not a more reliable engine.

Fou d out from dissecting mine and a few JY blocks that 2.9s had casting sand and clay left in their water jackets. The more sand, the more likely to crack a head. Wasn't their fault.

It's a reliable engine with a few quirks. Any reliability issues T this point of you clean and go over your engine are going to be caused by 30+ year old 8 bit electronics and sensors. I'd start there.