1UZ vs 2UZ into FJ45LV

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woytovich

woytovich

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I am looking to build a nice running street/highway/expedition vehicle with enough power to tow a decent sized cargo or camping trailer. I'm geeked to try a 1UZ or 2UZ swap but I am getting some mixed info on what would be the "better" swap.

I am not looking for a fast hot rod build. I want power enough to move the truck down the road comfortably. I want to be able to step on it and get up to speed without serious delay but I'll never race it... As well, I am not going to be doing any real wheeling with the truck so no need for gobs of slow/low end torque for that either... no sand dunes, no mud bogs, no rock crawling. I'm open to the mated auto or a 5 speed manual swap...

I know the 2 was used in the trucks and SUVs and the 1 in cars. Will I be disappointed with a 1UZ in the 45LV?

Any input would be appreciated.
 
I don't know about disappointed. It's a great engine. It's very common. Very cheap. Unbelievably durable.

But, It's a car engine. It makes power a little higher in the rev band. It sucks fuel for its size. The MAF sensors on some are a really stupid design. It's also a pretty complicated install, from what I hear. Not a lot of aftermarket support and, like all toyotas, you can't get into the programming to tweak things.

The 4.7 has better drivability characteristics for a truck. You can get one as a complete drivetrain so no issues with transmission and transfer case compatability. It's also durable and generally lasted longer than the trucks they were put into. They were all OBDII. Still not an easy install.

Or 1FZ. Harder to find. A tight squeeze. Not nearly as powerful or fuel efficient. But it looks and feels right.
 
Gumby said:
The 4.7 ....Still not an easy install.
Click to expand...

Are you saying it is an easier install than a 1UZ but still not "easy"? I am concerned about the wiring issues and if some flavor of the 1UZ is significantly easier to install then that might be a better choice.

Can I mitigate the "car" characteristics of the 1UZ with diff gearing? Would it be less of an issue with an auto vs a manual?

This is for a 99.99% on-road vehicle with 33" tires.

Mark
 
I don't think you can regear to get happy. You can get it lower, but the engine will still be working hard. You don't want to drive everywhere at 3000 rpm.

I don't know that a 4.7 is easier. Neither are a popular swap and toyota doesn't support swaps like GM does. Both are done more in Australia than here. I don't know what resources are out there. If you can find write ups and aftermarket support for both equally, I personally would go with the 4.7.

If it were a 4runner it might be different, but the LV is a bigger heavy truck. I would want a bigger, more torque oriented motor. It's why I went back to a 5.7 tundra after trying a 4.7. I like a truck to pull down low.
 
Hope this helps

The 1uz is a swap i have been preparing for, it is all going in to a fj60. The motor makes about 100hp/lbt more than the 2f so i figure it is a good upgrade. The torq comes on low in the rpm's so that should help the driving. I also dont want to lose the feel of the truck either. The 1uz weights much less than the 2f, and a 2uz would be heavier but i would like to keep weight down. I am staying away from the vvti versions because of wiring and complexity. I am going to mate it to a W series trans out of a 90's pickup, to gain a 5speed. I already have one and i dont want to spend the money on an auto, plus i just like manuals. Just do some searching. There is lots of support but it is all in Australia. Here are a few links to help you out.

This is the best write up i have found yet:
http://oldschool.co.nz/2011/forum/i...ow-to-wire-up-a-1uz-engine-vvti-and-non-vvti/

A stand alone system
http://www.spitronics.co.za/shop/index.php?main_page=product_info&cPath=2&products_id=26

And for trany adapters search on ebay for 1uz adapters. there is someone with the name ksracing-thailand that is making a few different ones.

And a gear ratio calculator to help with the drivability
http://www.grimmjeeper.com/gears.html
 
Thanks guys... I know this is not a common swap here in the states but it seems that it is being done elsewhere. I had seem the wiring info - very nice.

I am VERY curious to hear about the street drivability of a 1UZ in a 60... PLEASE keep me/us in the loop...
 
There has to be a dozen+ and growing 1UZ swaps here locally in SLC, but all in pick-ups and 4Runners, can't say I've seen one in a larger (heavier) platform such as a Land Cruiser. I think it would be an improvement over the stock motor but given the complexity of each swap is near 6's, I'd go 2UZ.
 
woytovich said:
Thanks Kurt... when are you going to start selling adapter kits! ;-)

I would think there could be a market for modified wire harnesses too...
Click to expand...

That would be a neat kit offering, perhaps something we will do down the road. We are always adding product and we are working on some new offerings with manufactures currently... I'll add this to my to-do list :D
 
I don't know how helpful this will be, since my personal experience is from using the 1UZ VVTi in a very different breed of vehicle. But here goes, regardless.

I've had a couple of Impalas (65 and 67 models) swapped with the VVTi version 1UZs. These engines are incredibly powerful, robust, and represent great bang for the buck. For these cars, they've been used with the 5 speed auto transmission, ready-bolted. They're as happy redlining, as they are puttering along at a little over idle.

I don't know your personal preference (manual/ auto) or how much you're going to actually NEED 4wd at all (from what you say about its intended use)...but I'll go out on a limb and say this much: imo, the 1UZ trumps the 2UZ in most areas. It's lighter, more powerful, more fuel-efficient, and a real pleasure to drive on the road. The earlier generation 1UZs (non-VVTi) versions are 30-40 bhp less than the VVTi version, but if you're willing to live with that, they are far simpler than the last generation models, since they dispense with the wiring associated with the VVTi functions, and are not drive-by-wire. If you're into subsequent mods, the earlier generation 1UZs also can be supercharged, chipped and/or tuned for higher levels of performance on stock internals, although the subsequent costs can be considerable.

I'm planning a build myself (an FJ40/45 hot rod of sorts), and the 1UZ VVTi (with the 5 speed) is my personal choice of engine. However, this is going to be lowered, stretched, and chopped...and will never be venturing off the road...so it might be at complete variance with your personal requirements. Best of luck with your eventual choice.

And to REALLY let the cat amongst the pigeons...have you actually considered the 3UZ-FE VVTi? :)
 
merbesfield said:
I like Toyotas as much as anyone, but besides keeping it all Toyota, what would be the advantages of using a Toyota V8 vs a Chevy? Just not liking Chevy doesn't count. Give me details pls. Thanks
Click to expand...

All Toyota is a part of it for sure. This will likely be my last, and ultimate cruiser. I want it to be the culmination of all I have learned about cruisers and all I want out of a truck at this point in my life. Im 56 and have aspiraions to drive this for the rest of my driving life. I want to love everything about it when I do...

Mark
 
Easy to mate to a Toyota trans and t-case. Which I need w dual offset axles.

I wanted a modern engine. Not something that was designed in the 50s. LS or not.

The drivetrain in my 03 Tundra is the s***.

I know Ford domestic engines(and nothing Chevy by choice) and there are no good adapter choices for what I wanted to build besides I have done 2 5.0 swaps and wanted something different.

1 and 2u engines are like everything else Toyota, reliable and fairly easy to wire if you have the diagrams.
 
My DD is an 05 Tundra DC and it runs like a sewing machine. I would love this setup in my Cruiser. Sounds like Michael and others are working out the details so please keep posting info so we can all learn. The prices for used/wrecked Tundras are very reasonable so I think this is how I want to go once I finish my body work. What I am afraid of is having a cruiser that does not perform up to the standards that I am so used to driving, i.e. modern vehicles. I love he old school look, but at the end of the day if it drives like a tank it will get used very little and will have all been for nothing. Maybe I will just have Michael drop a motor in once he figures out all the tricks. What would really be interesting would be a 5.7L.
 
merbesfield said:
My DD is an 05 Tundra DC and it runs like a sewing machine.
Click to expand...

4.7 2UZ... right?

I have no doubt about the 2UZ in the LV... I am curious about the (cheaper and more readily available) 1UZ in a truck of that weight.
 
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