This makes me happy when i read

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
cremecreme
Posts: 282
Joined: Sat Sep 30, 2006 10:48 am
Car: 2003 m45

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The VK is based on Nissan's VQ V6 rather than the VH V8 used in previous Q45/Cima models. Changes include titanium valves and aluminium lifters, which being lighter than equivalent steel items allow the engine to respond more quickly and more quietly. The intake manifold directs air through different paths at different engine speeds to boost low-end torque or unleash high-end horsepower. The 4.5 L engine uses a 93 mm bore and 82.7 mm stroke and a 90° bank angle.

Makes me want to get in and drive

The 4.5 L (4494 cc) VK45DE was introduced in 2002 and is built in Yokohama, Japan. Bore is 93 mm and stroke is 82.7 mm. Output is 340 hp (254 kW) at 6400 RPM with 333 ft.lbf (451 Nm) of torque at 4000 RPM. Redline is at 6600 rpm. It has an aluminum engine block and aluminum DOHC cylinder heads. It uses SFI fuel injection, has 4 valves per cylinder with VVT and features forged steel connecting rods, a one-piece cast camshaft, and an unusual nylon intake manifold, variable-flow induction system optimizes airflow for low- and high-speed operation and low-friction molybdenum-coated pistons and microfinished crankshaft.



User avatar
szh
Posts: 15932
Joined: Tue Jul 23, 2002 12:54 pm
Car: 2018 Tesla Model 3.

Unfortunately, no longer a Nissan or Infiniti, but continuing here at NICO!
Location: San Jose, CA

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Cool!

But, don't disregard the VH engine too much either! The first implementation of it in the 1989 - 1990 Q45 was, and still is, an awesome engine. With only one design flaw (plastic chain guides ... that can be replaced).

It was under-rated for its power and in its time, it was one of the best V-8's you could get. Strong, over-designed, probably produced quite a bit more than the 280 HP it was "rated" at.

Z


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