3.4l 5vz-fe v6 -vs- 4.0 1uz-fe v8

KokaneeRanger

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3.4L 5VZ-FE V6 -VS- 4.0L 1UZ-FE V8

I wonder if there is anyone on here that had the honor to drive/own both of these engines??

I am particularly interested in finding out the differences in Fuel consumption... and offroad performance gains???
From the research ive done so far, ive noticed a handful of runners from NZ and AU have this swap.. and its known to be one of the best swaps for the runner. Ive seen youtube videos of this on runners that go very fast on the highway. but havent seen the performance in an off road setting.. Only this video of a 1uz 4runner HILL climb
http://www.youtube.com/watch?feature=player_detailpage&v=oSooXqhodts
Would this engine increase the runners performance in an off road setting? (ie low speeds)
any1 pls?


The 4.0 L (3,968 cc/242.1 cu in) all-alloy 1UZ-FE debuted in 1989 in the first generation Lexus LS 400/Toyota Celsior and the engine was progressively released across a number of other models in the Toyota/Lexus range. The engine is oversquare by design, with a bore size of 87.5 mm (3.44 in) and stroke of 82.5 mm (3.25 in).[1] It has proved to be a strong, reliable and smooth powerplant with features such as 6-bolt main bearings and belt-driven quad-camshafts. The water pump is also driven by the cam belt. The connecting rods and crankshaft are constructed of steel. The pistons are hypereutectic.

Its resemblance to a race engine platform (6 bolt cross mains and over square configuration) was confirmed in 2007 by David Currier (in an interview with v-eight.com), vice president of TRD USA, stating that the 1UZ platform was based on CART/IRL engine design. It was planned to be used on GT500 vehicles, however its subsequent use in the Daytona Prototype use was not planned.

In its standard, original trim with 10:1 compression, power output is 191 kW (256 hp), torque of 353 N·m (260 ft·lbf).[1]
1UZ-FE

The engine was slightly revised in 1995 with lighter connecting rods and pistons and an increased compression ratio to 10.4:1 resulting in peak power of 195 kW (261 hp) and torque of 363 N·m (268 lb·ft).

In 1997, Toyota's VVT-i variable valve timing technology was introduced along with a further compression ratio increase to 10.5:1,[1] bumping power and torque to 216 kW (290 hp) and 407 N·m (300 ft·lbf). In the GS400 application, output was rated at 300 hp and 310 ft-lb of torque.

The 1UZ-FE was voted to the Ward's 10 Best Engines list for 1998 through 2000.[2][3][4]

Applications:[5]

* 1989–2000 Lexus LS 400/Toyota Celsior
* 1990–2002 Toyota Crown/Toyota Crown Majesta
* 1991–2000 Lexus SC 400/Toyota Soarer
* 1992–2000 Lexus GS 400/Toyota Aristo
* Toyota MR2 Le Mans Car


The 5VZ-FE is a 3.4 L (3378 cc) engine which replaced the 3VZ-E. Bore is up to 93.5 mm (3.7 in) and stroke is 82.0 mm (3.2 in) while the compression ratio stays the same as the 3VZ-FE at 9.6:1. Output is 190 hp (142 kW) at 4800 rpm with 220 ft·lbf (298 Nm) of torque at 3600 rpm. It has a cast iron engine block and aluminum DOHC cylinder heads. It uses sequential multi-port fuel injection, has 4 valves per cylinder with bucket tappets and features large cast connecting rods, a one-piece cast camshaft, and a cast aluminum intake manifold. It also features an oil cooler and coil-on-plug ignition.

Applications:

* 1995–2004 Toyota Tacoma
* 2000–2004 Toyota Tundra
* 1995–1998 Toyota T-100
* 1996–2002 Toyota 4Runner
* 1993–2004 Toyota Land Cruiser Prado
 
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ive owned 4 3.4s and driven a couple ls400s with the 4.0 in it so i guess im about halfway qualified.

All my 3.4s have gotten anywhere from 16-18+ depending on driving conditions. They make good power for what they are and have plenty of torque to push around a little toyota 4x4. The 4.0's are very quick, those 2 extra cylinders can really be felt on the seat dynamometer. Ive never measured gas mileage in one but considering they are also 4 cam motors with fuel injection and a small displacement for a v8 i would think they could pull 16+ mpg very easily. In a ls400 they could probably get 18-20 if you drove it conservatively.
 
oh.... how sexy...

1UZ
Lexus_CalSciCtr_1UZ-FE_V8_exhibit.jpg

1UZ
 
I have been talking to a guy in Florida that will swap a 1uz into anything. I am really considering doing this swap once I find a dd car because the 3.4 isn't cutting it anymore and I don't want to supercharge it cause I have had one on my 2000 tacoma and it was ok power wise. The 1uz being all aluminum motor probably weights less than the 3.4 and will probably be able to get better gas mileage too. I am looking for a 99+ new 1uz that way I can keep it smog legal in California. Good luck man
 
I have been talking to a guy in Florida that will swap a 1uz into anything. I am really considering doing this swap once I find a dd car because the 3.4 isn't cutting it anymore and I don't want to supercharge it cause I have had one on my 2000 tacoma and it was ok power wise. The 1uz being all aluminum motor probably weights less than the 3.4 and will probably be able to get better gas mileage too. I am looking for a 99+ new 1uz that way I can keep it smog legal in California. Good luck man

what is the contact information for this guy in florida? business number...
 
SO he says its $3000 - $5000 depending on what parts I choose and if I want auto or manual...

sound right to anyone that did the same swap?
 
Did he say which is cheapest between auto and manual?

this is his email reply:

> >> well the price would depend a lot on what your looking for. auto or
> >> manual, what accessories do you need working?
> >>
> >> to give you an idea, everything working, ac, ps, cruse, no codes. will
> >> be about 4000 in labor and random parts, motors typically run for
> >> about 300$ or a OK shape 92 motor, 1000-2000 or so for a 97 vvti
> >> motor, If you want it manual, you'll need the transmission, slave cyl,
> >> and the adapter kit that i make on top of that. so a ball park
> >> would be about 3000-5000 depending on options you choose.
 
I gotta say, I believe this is the path I will choose when my engine finally blows. I love my truck, but I would REALLY love it with a vvti V8...:reddance:
 
I gotta say, I believe this is the path I will choose when my engine finally blows. I love my truck, but I would REALLY love it with a vvti V8...:reddance:

yeah I totally understand where ur coming from. I have been looking into this engine, and I have heard some success stories, but this engine swap is for someone who really knows what they are doing, even if you have done regular honda engine swaps, it doesnt mean you will do this with ease. I have heard some bad stories about how hard it is to do this engine swap, the amount of time and money that is needed is alot...
ppl get demotivated and quit their plans half way and end up putting their old engines back in...

so to say the least i am scared of doing it on my own. im contacting custom fabricators over north america to see who can do the job the best and in the best price quote..

ive asked them if i can hang around and watch them do it or even help out so i can learn how things work on the truck.. rather than have sum1 else work on it, and have me not knowing a single thing abt the truck mechanically... which would be bad for my purpose (solo expeditions)...
 
Oh, I wouldn't ream of doing anything this in-depth on my own, I would definitely hire it out. I might get the parts, but someone experienced would do the actual work...
 

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