The Question. 1UZ Auto or Manual
The Question. 1UZ Auto or Manual
So looks like i`m finally going 1UZ, but the question is do I go Manual Trans Or Auto Trans ?
The Surf in it at the moment is Auto so i can use that, or i have the full Manual Conversion outta the old truck.
Pro`s of Manual:
Good Downhill Engine Braking
Can Keep Aircon
Con's of Manual
Cant chop 1st on hillclimbs
Harder to start on an incline slowly without riding the crap outta the clutch
Have heard they can be "Jerky" ?
Cant Change Gear underwater?
More expensive by about $1500-2K (Clutch, Flywheel, Belhousing)
Pro`s of auto
Easy Hillclimbing gearchanges and slow starting
Can change to 4wd while moving
Easyier to get non LSD's to spin both wheels with the application of the brake
Shitload cheaper (Pretty much bolts on)
Cons of Auto
Not as much drive input requires (maybe not a con)
Not much engine braking downhill (must use a lot of brake)
Harsh changes in low range
No kickdown with the conversion. (have to use the stick manually if you want it to rev out)
Chops through the gears quickly into top gear (supposedly)
Cant Keep Aircon
Anything i`ve missed?
At this stage i`m prolly leaning towards Auto, but hold onto the manual Conversion incase I change my mind.
Who has what ?
The Surf in it at the moment is Auto so i can use that, or i have the full Manual Conversion outta the old truck.
Pro`s of Manual:
Good Downhill Engine Braking
Can Keep Aircon
Con's of Manual
Cant chop 1st on hillclimbs
Harder to start on an incline slowly without riding the crap outta the clutch
Have heard they can be "Jerky" ?
Cant Change Gear underwater?
More expensive by about $1500-2K (Clutch, Flywheel, Belhousing)
Pro`s of auto
Easy Hillclimbing gearchanges and slow starting
Can change to 4wd while moving
Easyier to get non LSD's to spin both wheels with the application of the brake
Shitload cheaper (Pretty much bolts on)
Cons of Auto
Not as much drive input requires (maybe not a con)
Not much engine braking downhill (must use a lot of brake)
Harsh changes in low range
No kickdown with the conversion. (have to use the stick manually if you want it to rev out)
Chops through the gears quickly into top gear (supposedly)
Cant Keep Aircon
Anything i`ve missed?
At this stage i`m prolly leaning towards Auto, but hold onto the manual Conversion incase I change my mind.
Who has what ?
To Boon or not to Boon.
Re: The Question. 1UZ Auto or Manual
i have an auto in my club truck and a manual in my winch truck, both are good, but prefer the auto.
you can lock up the converter to eliminate engine breaking problem, also wiring up to Manual shift, to stop change up.
lock up mod very simple a relay, diode, switch and a couple of wirings.
everyone has a different opinion, but till you have driver an auto offroad,
being so simple its hard to go pass.
you can lock up the converter to eliminate engine breaking problem, also wiring up to Manual shift, to stop change up.
lock up mod very simple a relay, diode, switch and a couple of wirings.
everyone has a different opinion, but till you have driver an auto offroad,
being so simple its hard to go pass.
retired 4wd to a ford ranger and UTV
Re: The Question. 1UZ Auto or Manual
Why can't you keep the air con with auto? What am I missing?
SWB V6 Paj with one or two mods 

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- Hard Yaka
- Posts: 284
- Joined: Tue Mar 15, 2011 1:59 pm
- Location: East Auckland
Re: The Question. 1UZ Auto or Manual
if i were doing it id go auto, everything just seems so much easier to drive through where one of my mates is tryna chop through gears through bogs and uphills and it tries to skid, might be alot easier of your front diffs too, coz they suck too replace as we both know
Re: The Question. 1UZ Auto or Manual
Autos are easier on CV's apparantly
70 series prado (KZJ78) and 90 Series Prado (KZJ95)
Re: The Question. 1UZ Auto or Manual
auto my vote, had manuals for years now both my trucks are auto 

- jonossiksilvia
- Hard Yaka
- Posts: 727
- Joined: Mon Jul 12, 2010 5:53 pm
- Location: christchurch
Re: The Question. 1UZ Auto or Manual
i building an auto 1 at the moment. almost finished just needs exhaust and wiring. mate also has an auto 1. i went for auto as easier to drive off road, cheaper to start with as most 1uz come with auto and an auto surf transfer bolts straight on, nicer on diffs and cvs .yes u can still have aircon Manuel or auto.
Current 4wd: Surf Kzn185 ssrg factory Intercooled (yet to start build)
Past 4wd: toyota surf ln130, coil sas, 1uz v8 build
Past 4wd: toyota surf ln130, coil sas, 1uz v8 build
Re: The Question. 1UZ Auto or Manual
http://radesignsproducts.com/14Shiftcontrollers.aspx
Ive got one of these to Manually Control the A340 Trans. Cheap enough out of the states,
around $100nz Landed.
Ive got one of these to Manually Control the A340 Trans. Cheap enough out of the states,
around $100nz Landed.
Re: The Question. 1UZ Auto or Manual
NJV6 wrote:Why can't you keep the air con with auto? What am I missing?
From what i`ve heard the auto sits a touch further forward, so have to run a celica radiator, but with a 16" fan on the front, right where the aircon radiator sits.
Any info on how to get around this.
Those shifters look pretty cool. is the Rail shifter similar to the Baja shifter?
Got any images of them in action ?
To Boon or not to Boon.
Re: The Question. 1UZ Auto or Manual

That gives you an idea of the size, Id probably go with the baja if you have room.
Re: The Question. 1UZ Auto or Manual
what mods have to be done to mount the transfer on to the lexus auto and which transfer box are you using, like the sound of an auto and get to save a couple of grand in the process, mite go this way myself
- jonossiksilvia
- Hard Yaka
- Posts: 727
- Joined: Mon Jul 12, 2010 5:53 pm
- Location: christchurch
Re: The Question. 1UZ Auto or Manual
monaro427 wrote:what mods have to be done to mount the transfer on to the lexus auto and which transfer box are you using, like the sound of an auto and get to save a couple of grand in the process, mite go this way myself
i using the factory surf auto transfer box from 2lte and here 1 of many links to mount the 2: http://www.4wdaction.com.au/forum/viewtopic.php?f=22&t=51485&p=726960
Current 4wd: Surf Kzn185 ssrg factory Intercooled (yet to start build)
Past 4wd: toyota surf ln130, coil sas, 1uz v8 build
Past 4wd: toyota surf ln130, coil sas, 1uz v8 build
Re: The Question. 1UZ Auto or Manual
monaro427 wrote:what mods have to be done to mount the transfer on to the lexus auto and which transfer box are you using, like the sound of an auto and get to save a couple of grand in the process, mite go this way myself
How i`m doing it is ...
1UZ comes complete with box, this bellhousing bolts straight onto the hilux auto, so to get it to work you need to keep the 3VZ Auto and wiring, run a tricky Dual ECU wiring setup to work the box with the 1U, and use the hilux box with the 1U torque converter and bellhousing, then the only downside is the auto will change quickly through the gears, hence the shift controller and you loose your kickdown.
If that makes sence.
To Boon or not to Boon.
Re: The Question. 1UZ Auto or Manual
juz wrote:http://radesignsproducts.com/14Shiftcontrollers.aspx
Ive got one of these to Manually Control the A340 Trans. Cheap enough out of the states,
around $100nz Landed.
Those shifters do not have any engine braking (if they are the same as when I looked at them last year). So be careful you know what you are getting.
Nissan Terrano coilovers, turboed VH45, Safari axles, and some other stuff.
Re: The Question. 1UZ Auto or Manual
i've got a manual in my LJ71. 1-uz & auto bellhousing, custom flywheel, adaptor plate to 2l-t manual box.
i should've changed it to auto. Throw on gearbox is too long to get a run a t anything. by the time you've hooked low-3rd you've stopped. would be a damn sight easier for low speed stuff too.
i should've changed it to auto. Throw on gearbox is too long to get a run a t anything. by the time you've hooked low-3rd you've stopped. would be a damn sight easier for low speed stuff too.
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Re: The Question. 1UZ Auto or Manual
Yeah, at this stage, i`m going auto, but holding onto the manual stuff, just incase I change my mind...
To Boon or not to Boon.