UPDATE: A limited supply of the original best-selling Lextreme 1UZFE EGR Delete Kit remains. If you own a 1UZ from 1990-1997, you really need to get this kit! Email me at [email protected] for help with ordering or questions. This will probably be the last kits I have made.

All other parts are SOLD OUT and won't return, including the LS400 and SC400 turbo kit, rebuild kits, supercharger and performace torque converter. We're not an auto parts supplier and I can't respond to inquries for random Lexus and Toyota auto parts.

LEXTREME LEXUS FORUMS HERE! - Post Questions For Quick Answers!

Lexus-Toyota Performance Valve Spring Upgrade

We are proud to come up with this product.  Its not only a product we can use, but also a product we can afford.  I know there is site selling them for $1,300 per set.  We did lots of R&D and found these springs to work well with stock or slightly modified engines.  These springs will work on all UZFE family engines.  From 1UZFE to 3uzfe and from 1990 to 2006.

We have done lots of research on this. My engine builder and I came up with these springs. They are rated at 82 lbs seat pressure and 123 lbs lift pressure at stock cam lift. Please see data below. These springs will work on ALL UZFE engines from 1990-2006.

We have them available for the public at $250 per set (32 springs). Shipping will be $10 to anywhere.

These springs will work with stock retainers, locks and cams. These springs even work with modified 2uzfe cams with .400″ lift. (stock is .310 lift”) without coil binding.

Below are some pictures of the springs. The last two pictures show the spring compressed rate at 1.360″ (which is seat pressure). The rate of life for these springs is 140 lbs.

We finally figured out what we need to get those valve into our beloved Toyota and Lexus heads.  Our oversize stainless steel valves are being use by many high performance import cars and they are making mega horsepower with these valves.  These oversize valves are not made for Toyota or Lexus, rather we cross referenced them according to their specifications against our current 1,2 & 3uzfe heads.  These stainless steel valves are machined to match according to customer horsepower goal.  Here is what we are offering:

1UZFE: (1989 – 1997)
Intake: 1.25 mm oversize
Exhaust: 1.5mm oversize

1UZFE VVTi, 2UZFE & 3UZFE: (1998-2006)
Intake: 1mm oversize
Exhaust: 1mm oversize

Depending on cam specifications our oversize stainless valves will machine accordingly.  So every set is custom made according to customer desire in relationship with cams specifications. 

Here are some beautiful
pictures of this springs.  They are high quality springs
made in the USA.  Yes they are are home grown.

Here are some pictures of the
springs being pressure tested.  The seating spring for the
stock UZFE is 1.360″ and its rated at 82 lbs.  Its about
33% increase in seat pressure and about 37% increase in lift

The last two pictures
demonstrate the difference seating pressure.  The left
picture is the stock 2uzfe and the right is our spring at 1.360″
(Valve close spring pressure)

The whole set come with 32
springs and its only $250.  What a deal!  We only
going to charge $10 for shipping to any place on this planet.

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

Cash App (user: $lextremeparts).
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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