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The quality of the construction is impeccable and the performance gains on the headers are immediately noticeable. Your email address will not be published. We will need to add extra fuel to match the extra oxygen, and we will let the ECU handle this. There is also a 4.3-litre variant called a ‘3U-ZFE’, but as these engines demand a little more money, they are not as common for swaps. Installation requires disconnecting the steering shaft to allow the new header to be fitted to the engine. This includes the usual suspects such as the cambelt, water pump, and cambelt idlers and tensioner. Properly tuned, a 1UZ-FE can live a long and healthy life with around 300–350kW at the wheels. This is a complete hose eliminating 1uz inlet hose. We have tested different tube lengths in an effort to maximize the low end torque production without […] In this example we will use the ECU to control the nitrous to switch on at 4500rpm at wide-open throttle. Either will be able to supply a package to suit your budget and use. Lastly we’ll free up the intake tract a little further with a set of individual throttle bodies. Installed these on my ’07 4runner and couldn’t be happier. JBA Header, Tundra 05-06, Sequoia 05-07 4.7 V8, URD Exhaust Collector Crush Gasket (each), JBA Exhaust, Tacoma, 95-99, Single Cat,4×4, E/C Short Bed, Length adjusted for MAXIMUM low end torque, True EQUAL LENGTH design for MAXIMUM power, True EQUAL LENGTH design for best exhaust sound, Ships with URD collector gaskets and collector hardware, 2003-2009 Land Cruiser Prado GRJ120 LHD V6, Total Chaos part number 59651 WELD-ON UPPER COIL BUCKET TOWER GUSSETS, Will not fit the Tundra with the 4.0L V6 due to the different collector flange design, Will not fit trucks with air injection (2012+ Tacoma V6, 2013+ 4Runner, FJ Cruiser). While nitrous isn’t for everyone, it is a cost-effective option when compared to turbocharging or supercharging. 1UZ to 5VZ fuel line. Your email address will not be published. Couple the poor head design with some conservative camshaft profiles, and the result is a serious limit on the amount of power we can expect to see. If you plan to go stupid with the power levels, the alloy block can become a weakness with the sleeves in each cylinder moving or cracking. Of course lemons do exist, so talk to your engine supplier about a start-up warranty for peace of mind. On the dyno this combination will lose a little bottom-end power and torque, but from about 3000rpm up the new head package will show its value. Add Dual Rear O2 Simulator (+$95.00) While we can still go further with a naturally aspirated engine, the cost versus gain becomes increasingly difficult to justify. In particular, it can’t run true sequential fuel injection (where each injector is timed to operate when the intake valves are open). Save my name, email, and website in this browser for the next time I comment. (verified owner) – June 2, 2020. If you can afford the 3UZFE engine, it is the most powerful in stock form. To help you out with some solid advice, we roped in Andre Simon from High Performance Academy to tell you exactly what works and what doesn’t. Select an option... Popular options from here include turbocharging and supercharging, and the 1UZ-FE has proven to take well to both options. Ductile iron sleeves will solve this, and with more nitrous or a suitable turbo set-up, the sky is the limit. As a member you receive exclusive email-only discount codes, product sales and pre-release info on new products. Select options. Toyota is one of the few manufacturers for which we don’t have any easy means of reflashing or ‘chipping’ the stock ECU. With a V8 engine, it is critical to make sure the entire rotating assembly is balanced to account for the weight of the new pistons and con rods. Its very low and in great shape. To make matters worse, the port shape is quite restrictive to airflow, too. Is there anything we should do before modifying an engine?As these powerplants are normally imported with very limited information about their service history, it is sensible to do a thorough service on the engine prior to installation. We aim to cover everything automotive that might be of interest to our readers with in-depth reporting, breaking news coverage, event galleries, product information, and community content from a dedicated team of professionals who are expert in their field of car culture knowledge. © Copyright 2008-2017 Underdog Racing Development. While high-compression pistons and aftermarket rods are all options, we’ll keep the budget in check by just looking at a head and cam package. This time he advises us on how to build any Toyota 1UZ-FE into the perfect all-rounder, and shows us the steps you’ll need to follow if you want to get the best bang from your performance dollar …. The most important thing to note is the Spec-U headers makes power throughout the ENTIRE RPM range. This should be a reasonably simple process, and you would expect to see between 170 and 190kW at the wheels. The shorty header certainly did not provide the same exhaust tuning and scavenging effect of any of the long-tube headers, with a significant loss in … Due to the equal length design installation is slightly more involved than the other long tube header options. There are two banks of flanges per header. The later VVTi model offers slightly more power, better fuel economy, and a decent increase in mid-range torque. NO LOSS IN LOW END TORQUE. Got it for $450. NZ Performance Car: Tell us about the different models of Toyota V8Andre: Toyota’s 1UZ-FE V8 is one of the most popular and abundant V8 engines to come out of Japan. Modifying your car can be a daunting task, what with so many products available on the market, and conflicting views about which ones are effective. URD Spec-U LT Headers for 1GR-FE, Tacoma, 4Runner, FJ Cruiser. With its six-bolt bottom end, the 1UZ-FE is a great starting point for a serious build. This is a pictorial gallery with brief descriptions. A new set of spark plugs is also a worthwhile investment. The header is MADE IN USA and is constructed of 304 grade stainless steel mandrel bent tubing that is 1 5/8\” diameter with CNC milled mild steel flanges all hand TIG welded. If you use a pod filter, try to locate it where it can get a supply of fresh cold air. All Rights Reserved. This is a simple process and is accomplished by removing the pinch bolt(s) in the shaft coupler and sliding it up enough to disengage it from the lower portion and then reattached once the header is bolted to the engine. With Toyota’s famous reliability, we have seen examples with over 250K kilometres on the clock that still drive perfectly, make great power, and use no oil. I am very happy with the sound and performance gains. Hey guys, just got my truck back today. While this isn’t a problem on a stock or lightly modified engine, if you plan to go all out, you’ll benefit from the Xtreme ECU that has eight injector and ignition outputs. Share your email address and join the FREE members-only, exclusive mailing list. Expect between 230–260kW at the wheels, depending on cam spec. The stock crankshaft is up to the task, but we will fit a set of forged pistons from JE and a set of con rods from Eagle. Installation was not easy, even with access to a shop and a mechanic who is a close personal friend and helped me out, it took about 6 hours total — they take up a lot more room than stock headers which means sliding them into the same spot is a TIGHT fit, but the labor was for sure worth it.

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