Lexus-Toyota V8 Turbo/Supercharger Oil System

This article is to give detail instructions on how to obtain oil from and to for either supercharged or turbo system.  Oil is essential in both lubrication and cooling.  One of the best and easiest way to get oil from the uzfe (all the Lexus-Toyota V8 engines are the same) is via the oil pressure … Read more

Lexus Throttle Body Coolant Bypass

I took out my throttle body earlier today and bypassed the coolant line. Why? the next time I take out the throttle body, I don’t have to mess with the two coolant hoses that attached to the throttle body. No big deal. Just use about 12″ 1/4″ hose and connect the incoming coolant to the … Read more

Various Lexus 1UZFE Head Modifications

What You’ve Always Wanted to Know About Shaved Heads, Cam Timing & Adjustable Cam Gears, But Were Afraid to Ask I decided to write this article in collaboration with Rod (Zuffen) to help enlighten fellow hotrodders on this subject, which is probably as critical to making power out of your DOHC engine as the black … Read more

Lexus LS400 Intercooler

More updated intercooler pictures Twin Turbo Lexus LS400 Stage II In forced induction cooler air is greatly desired and our Lexus cars are no exception.  Cooler air makes denser air and more air molecules per given volume.  Without going into great details on intercooling, I would like to take you to a intercooling journey in my … Read more

Lexus 1UZFE Compression and Leakdown Test

This is the most interesting topic so far.  This is an exciting topic because most first generation Lexus LS400/Celsior and Lexus SC400/Soarer owners are interest in forced induction like supercharger, turbocharger and NOS.  The first generation Lexus 1UZFE engine is about 111-14 years old now and average about 120,000-160,000 miles (this is my estimation, none … Read more

Lexus 1UZFE Compression Ratio with Different Gaskets

I have been working on compression ratios with the 1uz. Hope the info I have put together comes in handy for some of you. I have cc’d everything and this is what I ended up with.  First we need the cylinder displacement Pie x r2 x L = 3.142 x 1914.0625 x 82.5 = 496.13 … Read more

Lexus-Toyota V8 1UZ Oil Pump – A Simple Mod That Will Save $250

UPDATE June 7, 2022. Today we received the following email. Please consider it before purchasing part 15100-0F010. Justin, We saw your oil pump post. We purchased the part number provided (15100-0F010) and found it was not as described in the post. For one, the pump did not have the bolt as described but the plug … Read more

Lexus LS400 Cat Back Exhaust System

I think it is a good idea for people to understand the various parts of the stock system, what each does and the consequences of changing parts. The following pictures are of my 1999 LS400 exhaust parts. They are essentially identical for 1995-2000 cars and very similar to both the 1990-1994 LS400 and all year … Read more