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Frequently Asked Questions

Are there aftermarket headers for a 1UZ Fe?

Aftermarket headers are available for the 1UZ-FE, but with most of these motors being used for engine swaps, an off-the-shelf solution probably won’t suit. Talk to a fabricator or performance exhaust specialist about fabricating a set of four-into-one headers with 63-millimetre (mm) collectors.

What are the engine changes on the 1uzfe?

Engine changes such as VVT-i increased the horsepower. As you might be able to tell from these numbers, the VVT-i system worked wonders of the 1UZFE. The VVT-i system added 40 horsepower, and 40 lb-ft of torque. Most notably, the VVT-i system brought the peak torque down 400 rpm, making the car much more fun to drive around the street.

Is the 1UZ-FE a quad cam or quad cam?

For a quad-cam V8, the 1UZ-FE is actually very compact (check out a Nissan VH41 for comparison some time — they are huge!). This is because the heads use a scissor-drive arrangement where the exhaust camshaft is driven by a gear on the intake cam, rather than directly from the cambelt like most twin-cam heads.

How many valves does a Toyota 1uzfe have?

Like I mentioned before, it is a dual overhead camshaft engine, with 32 valves (4 valves per cylinder). Unfortunately, the 1UZFE doesn’t have hydraulic lifters, so it needs periodic valve adjustments. Later versions of the 1UZFE received Toyota’s VVT-i system, which improved horsepower and fuel economy.


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