| Author |
Message |
Rory Braatvedt
TryHard
North Island
Soarer v8
Posts: 116
Reg: 06-2009
|
Hey guys,
Had a discussion with a guy the other day who thinks the 94 V8's have a lighter conrod. Can anyone else shed any light on this or any other differences?
Thanks |
Ali Saeed
Goo Roo
WA
'97 JZZ30, '12 ZN6
Posts: 4238
Reg: 09-2007
|
94 rods arent as strong.
http://www.lextreme.com/rods.html |
James Johnson
DieHard
Auckland
95 UZZ31 with R154 
Posts: 565
Reg: 03-2009
|
Correct me when I am wrong guys.
From about mid 94 onwards Toyota decided to go with the series 2 1UZFE engine in Soarer's. The series 2 had lighter internals for wanting to achieve better performance and also a lighter engine giving better power to weight ratio. The biggest give away is the ECU plugs to be able to tell the difference.
For wanting forced induction the series 2 motor is not as great compared to the series 1 due to the internals being lighter therefor weaker. |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2116
Reg: 03-2007
|
S2 engine was first used in the 96-8 UZZ31s it has diffrent type injection system, MAF, 4 O2 sensors and has more Kwatts.
|
Ian Johnston
Goo Roo
South Australia
1995 UZZ31, BA XR6Turbo Ute. 2007 VE GTS.
Posts: 1478
Reg: 07-2005
|
My 1995 UZZ31 has the same engine as your picture. So, what KW do the later engines have? |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2118
Reg: 03-2007
|
Ian count how many O2 sensors + heaters you have should be 6 ?
also it will have S2 stamped on underside of bonnet. |
Steve Gorman
TryHard
NSW
V8
Posts: 202
Reg: 08-2005
|
The changeover for this type of engine is approx may 1995. The engine ecu also changed at that time and that ecu was used until v8 production stopped late in 1997. I have one that I am currently dismantling for spares.
cheers
Steve |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2119
Reg: 03-2007
|
Steve,does your late model engine have 4 o2 sensors two in the headers, two more before the cats +two more preheaters? and does it have this sticker?
|
Rory Braatvedt
TryHard
North Island
Soarer v8
Posts: 117
Reg: 06-2009
|
Interesting, so it must actually be from 95 that this change took effect. I must say i've owned both a 91 and 94 V8 and they both 'feel' the same - and the 94 definitely didn't have a big engine cover. |
Mike Beck
Goo Roo
New Zealand
BMW E36 Coupe 1UZFE V8 340i
Posts: 5638
Reg: 11-2005
|
Depends what month during the year they switched over to the updated engine.
My source indicates the S2 engine came in the 1995/5 (May)+ built UZZ31 models
Unfortunately the UZZ30 never go this update as they stopped making them by then. (Unless they are the USA spec UZZ30, they were made up to 2000!) |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2121
Reg: 03-2007
|
Ouote from Phil Bradshaw NZ (LEXTREME)
These engines were in production from 1989 until around ’94. These are far and away the most common available for conversions; most engines I have seen are 1992 or older. Usual story, age the engine by the writing on the plug leads. Be aware that some older engines get new leads – I can assure you there is no such thing as a 2001 Non-VVT 1UZ. The US spec engines made 250 horsepower @ 5600 rpm and 260 lbs ft of torque at 4400 rpm (see graph below). I suspect the Japanese engine’s output has a similar profile. Note how torque is above 200 lb ft from as little as 1000 rpm…
There is a facelift version that came out around 1996 that utilises a hot wire as opposed to Kaman Vortex Air Flow meter and makes around 300 horse from memory. These look similar to the early engines, except that they has a large plastic cover that fits over the top of the engine and the AFM is plastic bodied. These are also running sequential injection, as opposed to pairs.
unquote+++++++++++++
Now i know after 96/8 injection rails are alloy not cast iron, the engine wiring is a different part number,wish some one would just check and see if there 95 is running the extra o2 sensors /pre heaters etc.
Having worked in the importing /sales a 97 does feel quicker |
Ali Saeed
Goo Roo
WA
'97 JZZ30, '12 ZN6
Posts: 4240
Reg: 09-2007
|
Somehow I highly doubt that 97+ v8s make 300hp. I would imagine around 265-270} |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2122
Reg: 03-2007
|
Think you are correct Ali, looking at the statement i think he was talking about the late 95 upgrade and just took a guess at power.
BUT having said that ,only 253 8/96 -97 were made and it was in 96 that the SC400 got an engine upgrade mainly for detox laws, this is why i want some on with a 95 to see if they have 6 O2/preheaters 3 each side top ones are in header .
I suspect that engine may have gone into the last 250 |
Bernie Simm
Tinkerer
Tasmania
GT 4.0 v8
Posts: 22
Reg: 06-2012
|
The early 1uz was/is a bullet proof engine. It had no issues and didn't break anything or require repairs....so...they used different quality internals, with lighter and weaker components from 94 onwards, this resulted in vehicles having engine troubles and ultimately increased spare parts sales around the world...
Thats one version of events I have heard a few times now. |
Mike Beck
Goo Roo
New Zealand
BMW E36 Coupe 1UZFE V8 340i
Posts: 5639
Reg: 11-2005
|
Bernie Simm wrote on Saturday, November 24, 2012 - 08:05 pm:The early 1uz was/is a bullet proof engine. It had no issues and didn't break anything or require repairs....so...they used different quality internals, with lighter and weaker components from 94 onwards, this resulted in vehicles having engine troubles and ultimately increased spare parts sales around the world...
Thats one version of events I have heard a few times now.
Err where did you hear that?
I've not heard of the S2 and S3 VVTi 1UZ being any less reliable than the original S1 1UZ, they just went through a process of refining to make componentry lighter for more fuel efficiency/performance in a naturally aspirated specification, it would have in turn saved on material costs in some cases.
They only reason the newer engines might seem to be less reliable and break is due to people going for FI and over boosting them, assuming the have the stock thick early rods and have non interference valves, this is a particularly easy mistake to make with the S2 motor that looks nearly identical to the S1 motor less the valve cover. |
Ali Saeed
Goo Roo
WA
'97 JZZ30, '12 ZN6
Posts: 4241
Reg: 09-2007
|
vvti 1uz is 290hp from factory. Tune + exhaust + intake should send it past 320hp, EASY. All 1UZs are pretty much bullet proof, pity the head on them is terrible for power (compared to 1jz/2jz) |
Joshua Rao
Goo Roo
WA
TT (for sale $5.2k), 97 Blk UZZ31, 97 JZZ30 vvti turbo white manual, 96 vvti turbo manual, Legnum VR4, MR2 sw20, Alfa 156
Posts: 3032
Reg: 09-2006
|
Dave Rose wrote on Saturday, November 24, 2012 - 06:32 pm:only 253 8/96 -97 were made
Wow didnt realise it was so few. Dave do you know how many 97 V8s were made? |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2123
Reg: 03-2007
|
Hi Josh, 111 + one very special black/black that has been seen in the northern suburbs of Perth!!,others say its just a myth. |
Ali Saeed
Goo Roo
WA
'97 JZZ30, '12 ZN6
Posts: 4242
Reg: 09-2007
|
Ive seen it Dave, it definitely does exist |
Mike Beck
Goo Roo
New Zealand
BMW E36 Coupe 1UZFE V8 340i
Posts: 5640
Reg: 11-2005
|
Ali Saeed wrote on Sunday, November 25, 2012 - 12:11 am:All 1UZs are pretty much bullet proof, pity the head on them is terrible for power (compared to 1jz/2jz)
Yeah its unfortunate they didn't make a 1UZ-GE, with comparable elements of the 20v 4a-ge... |
Joshua Rao
Goo Roo
WA
TT (for sale $5.2k), 97 Blk UZZ31, 97 JZZ30 vvti turbo white manual, 96 vvti turbo manual, Legnum VR4, MR2 sw20, Alfa 156
Posts: 3041
Reg: 09-2006
|
Dave Rose wrote on Sunday, November 25, 2012 - 01:35 pm:Hi Josh, 111 + one very special black/black that has been seen in the northern suburbs of Perth!!,others say its just a myth.
 Too funny
I really want to get rid of it. Im paying far too many rego's etc. Its sitting in my garage atm collecting dust with the battery out. Maybe I'll wait 10 years for it to be a collecters soarer.
Dave any way of knowing how many black on black v8 soarers were made in 97?
I have been told the vvti v8 is coded making transplants hard. |
Ali Saeed
Goo Roo
WA
'97 JZZ30, '12 ZN6
Posts: 4243
Reg: 09-2007
|
Im just waiting on the 1998 VVTi SC400's to be 20 year old so I can import one form the US.
I wish someone would make CNC machined heads for 1uz with slightly larger cams |
Ali Saeed
Goo Roo
WA
'97 JZZ30, '12 ZN6
Posts: 4244
Reg: 09-2007
|
sorry just had another look. You can rego LHD cars in WA if they are over 15 years old, not 20. mmm, saw a 1999 black on black SC400 for $8kUSD.... |
Mike Beck
Goo Roo
New Zealand
BMW E36 Coupe 1UZFE V8 340i
Posts: 5643
Reg: 11-2005
|
Do it Ali! You know you want to... |
Boris Siljanoski
Goo Roo
Western Australia
LS400 + Soarer.
Posts: 1758
Reg: 11-2007
|
Didn't they get rid of the 20 Year old rule so you can't just wait until a car becomes 20 years old anymore? |
Previous
