Toyota Supra NA-TT Conversion – Aristo Engine Differences – Part 4

Summary                                        Part 1  

Removal of stock parts         Part 2  

Wiring                                              Part 3  

Aristo engine differences    Part 4    – You are here

Installation                                    Part 5

Final thoughts                             Part 6

Something I kept out of the installation stage is the specifics around the aristo engine differences as I believed this needed a section on its own. Most people who do the 2JZGTE conversion will use the Aristo engine as they are easier to come across than the supra 2JZGTE in most instances.

So if you have a supra 2JZGTE then you can skip this step, but some of the information below may be of help for maintenance in the future.

The VVTi 2jzgte engine also came in the 1998-2005 Aristo V300 (JZS161). I have previously listed a general rundown of the differences on the VVTi Information page on 2JZGarage here – http://www.2jzgarage.com/2012/02/2jzgte-vvti-information/ but I’ve provided a little more information and pictures as I found it’s more relevant to the swap if you are using this engine.

If you are swapping this engine into a supra then you will need to do the following:

• The Aristo power steering pump has a solenoid valve for progressive power steering which the supra doesn’t, mainly this effects the power steering lines as the bolt configuration is different, you will need a supra one and to remove the Aristo one, also a new P/S outlet will be required and along with different vacuum hose layout for idle up function.
• The water pump is the same on the VVTi and is not hydro – it will not need to be changed
• The Aristo has a front mounted sump, you will need to change to a Supra mid-mounted sump layout.
• The engine loom will need to be modified to suit the minor differences and connectors or swapped for a Supra unit
• The engine mounts and brackets will need to be swapped for supra items
• A brake booster bung (Goes to top of intake manifold) will need to be purchased that suits the supra manifold
• The o2 sensor loom plug will need to be swapped over to a supra one or lengthened
• A Supra water temp sender (Not sensor) will need to be purchased and installed, this sends the temperate reading to the gauge cluster
• An oil level sensor plug may need to be purchased depending on the year model
• Supra specific heater hoses from engine will need to purchase or made to suit as the Aristo ones are routed differently
• The oil dip stick bracket is different and will need to be modified or replaced with a Supra one
• Oil return lines from turbos are different and supra ones required, this is due to the different sump layout, the non-turbo sump can be used but will require modification for the oil return
• The engine dampener that stops the serpentine belt being flicked off and/or loose tension will need to be swapped to a manual one if you are using the manual gearbox

Power steering pump and diagrams
Supra Idle up vacuum routing

Supra P/S pump outlet

Diagram of Aristo P/S pump and solenoid layout

Supra P/S pump

Aristo P/S pump (Top) / Supra P/S pump (Bottom)

Water pump
You can see here that the water pump on the Aristo VVTi 2JZGTE engine is the same as the supra

Sump
Old Aristo front style sump

Oil pan, pick up and dipstick

Good chance to check the crank and main caps once removed

Oil return line and diagrams
Along with the sump some new oil return lines will be required and fabrication to allow the return to be connected

You can see the angle differences on the aristo sump oil return will not work with the supra

Supra sump modified to suit oil return

Oil drain to suit supra purchased and installed

Oil level sensor and diagrams
You can see here the oil level sensor

Interestingly the NA sump setup didn’t have an oil level sensor

Oil dipstick and bracket
These 2 pictures show the Aristo dipstick and bracket for the front style sump of the Aristo which won’t work with the supra mid-mounted sump by default, although modification of brackets will make it work

I used my imagination and some random bracket to mount the old Aristo dipstick, the important thing is to ensure the dipstick seal is secure and in the sump correctly

Engine loom removal and installation
You will need to remove the Aristo loom and install a supra one or use custom wiring

Full Aristo loom removed

Supra loom purchased and installed

Mounts and brackets
Aristo engine brackets removed

I stripped one of the bolts which needed some angle grinder intervention!

Removed bracket and engine mount from exhaust side off NA

Supra engine mount on intake side installed

Brake booster bung and diagrams
You will need this brake booster fitting for the supra engine

This is the stock Aristo setup

You can see in the top right of the picture the Supra brake booster fitting

Plenum vacuum routing
The Supra has slightly different vacuum routing to the Aristo, Supra below;

Aristo

O2 sensor
The Aristo o2 sensor wiring harness will not reach the supra loom, so I extended the wiring

Ensure that once the wiring is finished it covered in hear protective wiring cover (not pictured here but done at a later stage)

Water temp sender
You will see the water temp senders missing on the aristo engine

Purchase a new water temp sender and install

Heater hose and diagrams
These are the heater hoses you will require for the supra, I made my own to suit

Dampener (Drive belt tensioner) and diagrams
I installed the manual dampener on the Aristo engine to suit my manual transmission

Auto Tensioner from Aristo

Removed the 3 bolts after removing the cam covers, be careful not to drop them behind the cam gear cover

I needed to get some bolts to suit the bracket

Manual tensioner installed

Installed auto tensioner on old engine