This site contains car modification and auto upgrade information specifically for the turbo import Toyota JZX90 MarkII TourerV, however the principles applied here can be mostly utilised regardless of the make or model of motor vehicle.
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Custom Intake 25/8/2005
With the introduction of a large single turbo it was necessary to fabricate an intake and use an aftermarket filter. In keeping with the concept of free flowing air I managed to source some 100mm diameter aluminium pipe which happened to be almost an exact fit to the diameter of the belmouthed intake of the turbine.
After some basic measurements I cut a couple of lengths of tube with slight angles in order to allow me to get the foam filter placed where I wanted it while still clearing the bonnet. You will notice also from the first picture that I have made provision for a plumb back BOV.
Initially I plumbed back at 90 degrees to the intake pipe, but I found that this did not reduce the intake reversion, so I angled it to blow any excess pressure directly onto the compressor blades. The hope was to help keep the compressor spinning in the correct direction when there is a boost release event from lifted throttle. Since the turbine has very little room with the manifold placement it was necessary for the turbo outlet to have a U-bend. Unfortunate but necessary. As you can see, the intake is angled downwards considerably in order to clear the pipe from the turbo outlet that runs above it.
Despite what seems to be a rather tortuous bend, there seems to be little hindrance to the air flow. I suppose the reasonably smooth radius of the pipe aids in maintaining laminar flow throughout the higher flow velocities. Thats my theory anyway lol. You can see that there is still a reasonable amount of room around the air filter and this will enable me to build an enclosure around it to further minimise induction noise and most importantly maintain the necessary legality to keep a yellow canary off my windscreen.
There is also plenty of room to fit an oil catch can of the GReddy variety just in front of the radiator
Although it can't quite be seen from this shot, the BOV is the stock standard one from the twin turbos and doees a marginal job of returning excess boost to the compressor intake. A larger BOV is definitely necessary to cope with the boost and flow that this turbo is capable of.
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RECENT MODS CHRONOLOGY
5-Jan-2007
Turbo pages and Headlights
I have recently added a new page about my single turbo conversion. There is a second page yet to come, but page one outlines some of the supporting components needed as well as the turbo itself.
Page 2 will be forthcoming where I detail the fitment of the turbo, manifold and wastegate.
I have also added a page for modifications to my headlights that should be very useful for owners of import vehicles.
25-Jan-2007
Site Revamp
Wow, it has been a very long time since I worked on the site, but now I
am in the process of redesigning it so stay tuned as I add some more content
and attempt to bring this project up to date.
18-Mar-2006
Car Changes
Lots has happened since my last update on upgrades to the car. For instance
the car is now running a 2JZ bottom end and the gearbox has been completely
rebuilt with a stage 1.5 shift kit, beefier clutches and a 2800 rpm stall convertor.
To say that this has transformed the car is an understatement. The car is now
torque heaven, and is an absolute pleasure to drive. The lag that was sadly
felt with the 2.5L motor is now completely gone with the 3L and the stally.
When I can find time to update the site with the process I went through I will
do so. I have many hundreds of pictures to add.
Whatever your vehicle is, whether it is a turbo car or NA or a Toyota or other manufacturer, I hope that the automotive information on this page is of benefit to you as you take the path of modification and upgrade on your car.
Toyota JZX90 MarkII TourerV.