Single Turbo Lexus SC400

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In this project, I am doing something that has rarely been done before in a Lexus SC400.  Even though there have been a few TT SC400 cars designed as one-offs out there, none have proven to be too successful (not including the Anderson Audio SC430 project), and the cost to do so has been prohibitive.  My goal is to design, develop and implement a cost-effective, reliable Single Turbo SC400 that can be duplicated and sold as a partial kit for those that want to add the “oomph” of fun into their Luxo-Cruiser.

As mentioned above, I have dubbed this project SC400T.  I wish to note that I have had two people that have contributed many hours of their valuable time in helping me to put this project together, without whom, I would not have been able to attempt this project.  So, I wish to offer many thanks to the noted David Phan, aka, LEXTREME, and also to Joe Guthrie of Turbo Performance Systems, who is also a partial sponsor and confidant of my project.  This page will be updated as my project progresses, and will document my progress of Project SC400T.

Keep in mind that even though the SC400 shares the same engine with the LS400, there are many differences between the two cars, and the turbo projects are specific.  So, the one will not fit upon the other.  Even the header will be different.  I too, will try to give as much details as possible so you can duplicate this project in your shop or at home.  Like LEXTREME’s, this project will be homemade, with very few things being sent out.

If you are interested making your Lexus SC400 Single Turbo DIY Kit, stay tuned.  Once this is done, a DIY Kit will be available.  I am excited to join David Phan in this daring journey.  Wish me luck and please feel free to contact my generous sponsors for questions.  Without them, this project would not be possible.  I thank you all.

This project is currently in final design stage completion, and should be completed and dyno tested by the end of November, 2004.

Partial Sponsors:
Turbo Performance Systems – Custom GT40 Turbo & Flanges, 40 mm Tial Wastegate, Tial 50mm blow Off Valve (BOV)

Suppliers: Through David Phan’s generous support

High Temperature Silicone – Complete High Temperature Hoses and T-Bolt Clamps
Spark Racing – Oil lines and Fittings
Custom Coach of America – Custom Intercooler
Split Second – FTC1 Piggyback ECU-Development, Installation & Tuning.

Private Donation:
1.
2.

Parts Still Need: Looking for Donation
1. 1UZFE engine, non-working is fine.
2.

General Overview:
Turbo: Garrett GT40
Wastegate: 40 mm Tial Wastegate
Blow Off ValveTial 50mm Blow Off Valve (BOV)
Intercooler: Bar & Plate Custom Front Mount 36″ x 11″ x 3.5″ with 3″ in and outlet
Injectors:
FuelWalbro 255 L/H with Aeromotive Adjustable Fuel Pressure regulator
ECUSplit Second FTC1-Fuel and Timing Control with laptop
Engine: Stock with .079″ Multi-Layer gaskets with 9.0:1 Compression Ratio and ARP Studs
Drivetrain: Stock with modified Lextreme Torque Converter with stall speed at 2800 rpm
Manifold: Flanges are stock with custom log style with ceramic coating both inside & outside.
Goal: 15 psi with 500-525 rwhp in mind.
Discussion: Single Turbo Discussion Thread

Garrett GT40: This is the best bang for the bucks turbo out there.  Its free spinning wheels and great prices are the attracting features.  The bearing spins between standard turbo bearing and ball bearing.  I show this turbo to my friend who owns a motorsports shop and he initially thought it was a ball bearing.  I told him its not ball bearing but it spins like a ball bearing.  I highly recommend this turbo to anyone.  With the money you save, you can use the money for something else.  Contact TPS for pricings.

Do you have any questions? If so, please head over to the forums to get a quick answer or share your experience!

This is a freelance site with no support by huge companies.  I have been doing most of the R&D and technical write-ups by myself with my personal money and literally thousands of hours of my time.  I have taken extra steps to demonstrate in details how things are done.  Currently I am one of the few people doing Lexus V8 research and performance enhancement.  This effort comes from my personal love for this wonderful engine.  Most of the modifications are from trial and error. There's no cookbook for 1UZFE mods and its unknown territory for much of supercharger performance.  The parts, labor, web development and site hosting are 100% paid from my personal hobby money.  If you feel my efforts help you in any form, please do not hesitate to donate any amount of money to support this site. You have no idea how much I and the entire Lexus and Toyota community appreciate it!

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