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3.4L to 4.0L jeep!!

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Old 08-17-2005, 08:49 PM
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3.4L to 4.0L jeep!!

Quick question: I am able to do a side-by-side comparison (a '91 4Runner and a '96 Jeep Cherokee), and quite frankly, the Jeep has just about the best power-to-weight ratio I've ever seen!! It sports a 4.0L V6 engine, and I was wondering if such a swap can even be considered SANE. Imagine, a bone stock '91 4Runner that peels out on command!
Old 08-17-2005, 08:51 PM
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edit your title to 3.0 to 4.0
Old 08-17-2005, 08:52 PM
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Do a search for "7mgte" or "7mge" or "7m"

Inline 6 from a Supra. Much better swap.
Old 08-17-2005, 09:00 PM
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Originally Posted by shawnhog
Quick question: I am able to do a side-by-side comparison (a '91 4Runner and a '96 Jeep Cherokee), and quite frankly, the Jeep has just about the best power-to-weight ratio I've ever seen!! It sports a 4.0L V6 engine, and I was wondering if such a swap can even be considered SANE. Imagine, a bone stock '91 4Runner that peels out on command!
the jeep sports an INLINE 6, not a v6. Second off the engine is dumb design in my opinion. I mean who in their right mind puts the intake and the exhaust on the SAME SIDE on an inline 6??? Maybe im blowing that out of proportion, but Cummins doesnt and toyota doesnt, only heep as far as i know....

Secondarily id stack up a 7mgte (3.0L turbo inline 6) equipped 2nd gen against ANY 4.0 jeep on the road. From what I've read 7mgte's are stable up to 350hp on stock internals...and is easily modded to achieve these hp levels.

Besides why have part of a heep in your otherwise good yota?
Old 08-17-2005, 09:33 PM
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Originally Posted by Bumpin' Yota
... I mean who in their right mind puts the intake and the exhaust on the SAME SIDE on an inline 6???.......
Not trying to be rude, but all of the older Land Cruiser 'F' inline 6's are like that and they are FRIGGIN sweet. I think they were like that at least into the mid 90's in the fj80 as well...

Just thought I'd point that out, continue with the jeep bashing by all means
Old 08-18-2005, 04:18 AM
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4.7L hemi's go into jeeps.
Old 08-18-2005, 04:40 AM
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Originally Posted by ken.vs.ryu
4.7L hemi's go into jeeps.
Go back to bf.c, you...
Old 08-18-2005, 05:20 AM
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Originally Posted by Hugo
Go back to bf.c, you...
work frowns on bf.c
Old 08-18-2005, 05:48 AM
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Originally Posted by shawnhog
Imagine, a bone stock '91 4Runner that peels out on command!
I am probably pushing 230 - 250 crank HP and 260 - 280 TQ with 4.30 gearing, a 5-speed, and 15K miles on the clutch and I can't peel out on demand.

I agree with the other guys, if you are going to go through all that trouble to get an inline 6, at least get one that can be made to peel out on demand.
Old 08-18-2005, 08:42 AM
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oh, KAYY.. INsane it is.. Didn't mean to set of a round of Jeep-bashing..
Old 08-18-2005, 09:23 AM
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hahahaha it's really just good natured heep bashing...

if you go inline 6 you could ram a 2jz gte in, and I garuntee you that sucker would peel out on demand! (320bhp bone stock from 3.0L) However it is 4" longer than a 7mgte block and you MUST intercool it.
Old 08-18-2005, 09:25 AM
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Originally Posted by yoda-g2
Not trying to be rude, but all of the older Land Cruiser 'F' inline 6's are like that and they are FRIGGIN sweet. I think they were like that at least into the mid 90's in the fj80 as well...

Just thought I'd point that out, continue with the jeep bashing by all means
I have never seen underhood of any of the landcruisers, so I didnt know. I still think it's a dumb design making it very difficult to put headers in or other exhuast work, when other engines put intake and exhaust on opposite sides. That makes doing work on them a snap! lol Oh well...
Old 08-18-2005, 10:32 AM
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Originally Posted by Bumpin' Yota
I have never seen underhood of any of the landcruisers, so I didnt know. I still think it's a dumb design making it very difficult to put headers in or other exhuast work, when other engines put intake and exhaust on opposite sides. That makes doing work on them a snap! lol Oh well...
But then they wouldn't fit in tractors or in fork lifts! Yup funny enough those old F motors have many uses, though high performance is definitely NOT one of them.

You are right though, there are difinitely disadvantages to that design, the heat from the exhaust manifolds would actually crack the intake manifold on a lot of them (they are butted up against eachother!). I also imagine that would super pre-heat the air, almost like an anti intercooler. I think Toyota could've done a little better engineering with that design...

Now a Supra motor in my old fj40 [drool] mmmmmmm [/drool]

OK, I'll stop babbling now.....
Old 08-18-2005, 10:55 AM
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I don't think a Jeep motor will fit; it appears to be several inches longer than the 7M, which is already a tight fit in a pickup/4Runner.

The 7M is an awesome motor. I am finishing up my forged internal rebuild right now.


Last edited by paddlenbike; 08-19-2005 at 10:34 AM.
Old 08-18-2005, 10:57 AM
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Originally Posted by shawnhog
Quick question: I am able to do a side-by-side comparison (a '91 4Runner and a '96 Jeep Cherokee), and quite frankly, the Jeep has just about the best power-to-weight ratio I've ever seen!! It sports a 4.0L V6 engine, and I was wondering if such a swap can even be considered SANE. Imagine, a bone stock '91 4Runner that peels out on command!
a 3500lb jeep cherokee with 185 horsepower only works out to 19 lb/hp, not that impressive in my opinion...

I mean, even in SUV terms take for example:

A 4800 lb 2000 Chevy Tahoe with 300 hp has 16 lb/hp

A 4000 lb 2004 4runner with the 245 Hp V-6 is 16.5 lb/hp

Theoretically a 2nd gen with a 300 Hp Supra I-6 would be around 13 lb/hp

I'm not sure what cars you're looking at but...

EDIT: If I wanted 185 Hp I would want to get a 3.4l swap anyway

Last edited by mastacox; 08-18-2005 at 10:58 AM.
Old 08-18-2005, 05:46 PM
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Originally Posted by Adam F
Do a search for "7mgte" or "7mge" or "7m"

Inline 6 from a Supra. Much better swap.
agreed. the tt inline 6 supra engine is pretty friggin sweet and will blow the pants off the jeep I6. besides, it's keeping it a toyota. it's worth it. another option would be the lexus V-8. (can't remember the engine code or what vehicles it goes in). i've heard that does pretty well for a swap too.
Old 08-18-2005, 06:07 PM
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Originally Posted by Bumpin' Yota
the jeep sports an INLINE 6, not a v6. Second off the engine is dumb design in my opinion. I mean who in their right mind puts the intake and the exhaust on the SAME SIDE on an inline 6??? Maybe im blowing that out of proportion, but Cummins doesnt and toyota doesnt, only heep as far as i know....

Secondarily id stack up a 7mgte (3.0L turbo inline 6) equipped 2nd gen against ANY 4.0 jeep on the road. From what I've read 7mgte's are stable up to 350hp on stock internals...and is easily modded to achieve these hp levels.

Besides why have part of a heep in your otherwise good yota?
every conventional inline 6 other than some high performance ones are designed like that. take a look at any ford 300, chevy 292, dodge 225, jeep 258 etc. they're all like that. and a lot of 4 cylinders were/are like that as well. even the R family had the intake and exhaust on the same side until the 20R.

having the manifolds on opposing sides is called a "crossflow" head.

that said, i like the jeep 4.0, but it eats exhaust manifolds. i guess there's an aluminum head out there for it now, kinda cool.
Old 08-19-2005, 07:40 AM
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Originally Posted by kyle_22r
every conventional inline 6 other than some high performance ones are designed like that. take a look at any ford 300, chevy 292, dodge 225, jeep 258 etc. they're all like that. and a lot of 4 cylinders were/are like that as well. even the R family had the intake and exhaust on the same side until the 20R.

having the manifolds on opposing sides is called a "crossflow" head.

that said, i like the jeep 4.0, but it eats exhaust manifolds. i guess there's an aluminum head out there for it now, kinda cool.
The 4.5l I-6 1FZ-FE in the FZJ-80 Cruiser is not like that. It's a "crossflow"
4 valve aluminum head. Just throwing in my $.02!
Old 08-19-2005, 04:38 PM
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I just want to say that I hate Jeeps. Carry on.
Old 08-19-2005, 08:15 PM
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Originally Posted by <96 Runner>
I am probably pushing 230 - 250 crank HP and 260 - 280 TQ with 4.30 gearing, a 5-speed, and 15K miles on the clutch and I can't peel out on demand.
I can


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