MotorDyne Engineering - 350Z

Military Discount Available

The 350Z will accept any spacer size but the strut bar will only fit with the 5/16" spacer. If the strut bar is not needed, maximum peak power can be made with the MD ½" spacer. The 1/2" plenum spacers added induction growl is deeper and louder. The induction sound becomes more like a V8 engine.

350Z 5/16" Basic Plenum Spacer

At the optimum height and yielding the best overall gains, the Motordyne 5/16" plenum spacer outperforms the competition and conveniently keep your engine cover and strut bar in place.

This stealth modification adds 11HP-13HP and is the simplest to install.

All Motordyne melt proof plenum spacers come with pre-attached, high quality gaskets.

$ 235.00

350Z 1/2" Basic Plenum spacer

This stealth modification adds 12HP-14HP and is the simplest to install. This plenum spacer can be used for maximum performance enhancement. It also adds a substantially deeper growl under the hood. The 1/2" plenum spacer is fully compatible with the engine cover but is too large to fit the stock strut bar. With the engine cover in place the engine bay looks completely stock with the only difference being the strut bar is not installed.

All Motordyne melt proof plenum spacers come with pre-attached, high quality gaskets.

$ 265.00

350Z 5/16" Iso Thermal plenum spacer

The Motordyne Iso Thermal plenum spacer adds 12HP-14HP and reduces the effect of power robbing heat soak by thermally isolating both the upper and lower plenum. Its 5/16" thickness provides the best overall performance and is fully compatible with your engine cover and strut bar.

All Motordyne Iso Thermal systems keep your upper and lower plenum cooler without the risk of throttle body freezing when driving in cold weather.

Each kit comes with everything needed for a complete installation.

$ 265.00

350Z 1/2" Iso Thermal plenum spacer

This stealth modification adds 12HP-14HP and reduces the effect of power robbing heat soak. This plenum spacer can be used for maximum performance enhancement. It also adds a substantially deeper induction growl under the hood. The 1/2" plenum spacer is fully compatible with the engine cover but is too large to fit the stock strut bar. With the engine cover in place the engine bay looks completely stock with the only difference being the strut bar is not installed.

$ 295.00

350Z 5/16" Copper Iso Thermal plenum spacer

The Motordyne Copper Iso Thermal plenum spacer adds 12HP-14HP and reduces the effect of power robbing heat soak by thermally isolating both the upper and lower plenum. Its 5/16" thickness provides the best overall performance and is fully compatible with your engine cover and strut bar.

All Motordyne Iso Thermal systems keep your upper and lower plenum cooled without the risk of throttle body freezing when driving in cold weather.

Use the Copper if it snows in your area.

$ 299.00

350Z 1/2" Copper Iso Thermal plenum space

1/2" Iso Thermal plenum spacer (with all Iso Thermal components, Aramid Gasket and the Polarized Copper TB heater) This premium stealth modification adds 12HP-14HP and reduces the effect of power robbing heat soak. This plenum spacer can be used for maximum performance enhancement. It also adds a substantially deeper growl under the hood. The 1/2" plenum spacer is fully compatible with the engine cover but is too large to fit the stock strut bar. With the engine cover in place the engine bay looks completely stock with the only difference being the strut bar is not installed. Use the copper if it ever snows in your area.

$ 345.00

350Z MREV 2 Manifold TM

MREV 2 Manifold TM - The undisputed king of bolt on power.

A universal manifold modification for use on any VQ35-DE engine. When used with or without a spacer or aftermarket upper plenum, this lower plenum will make substantial power gains.

Multiple independent test show when used with a 5/16" spacer on the revup engine, the combination will add a "minimum" of 15+ HP and 18+ TQ in the upper midrange. Many independent MREV 2 Manifold REVUP tests have dynod in excess of 20HP and 30 TQ in the upper midrange and with high RPM peak power increased by 3-5 HP.

The MREV2 is a prerequisite to the plenum spacer when used on a revup engine. No other normally aspirated VQ modification provides as much gain as the MREV 2 Manifold!

Note: A $100 core exchange rebate is available for those of you with non-revup lower collectors. Contact us for more information.

$ 439.00

350Z Iso Thermal upgrade

Iso Thermal upgrade with Aramid gasket and Coolant Control Valve Motordyne Iso Thermal is the most comprehensive plenum thermal management system available. The upgrade will reduce heat transfer into the upper and lower plenum assembly. This helps to reduce power loss as the engine becomes heat soaked. Compatible with any type of plenum stock or modified. Recommended for warm climates generally above 45 ° F. When ordering Iso Thermal for an existing Motordyne spacer, please specify your spacer size in the comment window of the check out page. Note: You do not need this upgrade if you are also purchasing a Iso Thermal or Copper Iso Thermal plenum spacer.

$ 45.00

350Z Copper Iso Thermal upgrade

Copper Iso Thermal upgrade with Aramid gasket and Copper Throttle Body Heater.

Compatible with any type of weather hot or cold, Copper Iso Thermal reduces heat transfer into your upper and lower plenum assembly, but unlike a simple bypass, the Copper Throttle Body Heater keeps only the throttle body heated to prevent ice formation inside the throttle body on very cold or snowy days.

If it snows in your area use the Copper Iso Thermal for safe driving while still taking full advantage of the cold dense air for increased HP.

Note: You do not need this upgrade if you are also purchasing a Iso Thermal or Copper Iso Thermal plenum spacer.

$ 70.00

350Z Aramid Gasket

The Iso Thermal™ Aramid gasket is installed beneath the lower plenum to block heat transfer from the lower manifold into the lower and upper plenum assemblies. Heat transfer is significantly reduced and both the upper and lower plenum assembly operates at a much lower temperature.

$ 32.00

350Z Stock Manifold Gasket

The steel stock manifold gasket installed between the lower plenum and intake manifold. Use two of these gaskets, or the Aramid Iso Thermal gaskets, with a Manifold spacer to achieve the proper height needed for injector clearance. ~0.020” Thickness

$ 22.00

350Z 1/2" Manifold Spacer

The Manifold spacer is installed between the lower plenum and intake manifold. Installing the Manifold spacer between the intake manifold and lower plenum allows additional clearance for oversize injectors commonly used in Forced Induction applications.

$ 80.00

350Z 1/4" Manifold Spacer

$ 80.00

350Z 5/16" Bolt Kit

Bolt Kit for the Motordyne Z350 manifold

$ 45.00

General Information:

Plenum Spacers:

Instantly add 10-15 horsepower and a deeper engine note to your Z or G with a Motordyne plenum spacer. The Motordyne Plenum spacers are stealth. The 5/16" spacer is designed to work with your car's stock engine cover and strut bar. Installation is fast and easy; other than unbolting the stock collectors to switch in parts, nothing else is modified or changed. There are two sizes of plenum spacers to choose from and each offers an advantage for different applications. Both add power and a deeper growl under the hood. The 1/2" spacer typically yields 1 to 1.5 HP more than the 5/16" plenum spacer.

For turbo charged and super charged vehicles, the gains can easily exceed 17-23 HP.

Iso Thermal and Copper Iso Thermal:

Iso Thermal and Copper Iso Thermal upgrades reduce heat transfer to substantially reduce upper and lower plenum temperatures. Cooler intake air temperatures increase air density and reduces the tendency for detonation or ping.

1) The first component is an Aramid thermal isolating gasket that is installed between the lower plenum and intake manifold. By installing a Motordyne Iso thermal Aramid gasket between the intake manifold and lower plenum, the heat soak is significantly reduced.

2) The second component is the throttle body Coolant Control Valve (CCV). The CCV allows you to selectively heat (or not heat) the plenum assembly. With local weather temperatures below 55'F the valve is left open. In warmer weather the valve can be closed for maximum thermal benefits.

3) The third thermal management component is the Iso Thermal plenum internal supports. The plenum internal supports are self retaining and self sealing. In addition to providing sealing and support, the internal supports are thermally non-conductive to effectively shut down heat transfer through the six plenum internal posts.

4) The fourth thermal management component is the Copper Throttle Body heater. Copper Iso Thermal is a premium set and forget component that can be used in place of the Coolant Control Valve (CCV). It doesn't matter how hot or cold the weather is, you don't have to adjust a valve based on the season or ambient temperatures. Install it and the throttle body remains heated while the plenum continues to remain thermally isolated. Keeping the throttle body heated prevents ice formation on the throttle body butterfly valve when driving in cold weather. If it snows or gets really cold in your area, use the Copper Iso Thermal so your engine can take full advantage of the cold air you are driving in.

MREV 2 Manifold:

The Motordyne MREV 2 Manifold is high-torque plenum mod designed for use on any VQ engine.

When used with a 5/16" spacer on the REVUP engine, every test to date shows MREV 2 Manifold will add a "minimum" of 15+ HP and 18+ TQ at 4500 RPM. MREV 2 Manifold is easily the single most effective bolt on modification available for the REVUP VQ engine.

When used with on the non-REVUP engine, the gains are very similar to that of the 5/16" spacer but the MREV 2 Manifold will show a slightly lower peak value, with a slightly higher average value and a slightly higher TQ value. Overall, MREV 2 Manifold provides "area under the curve" and is the highest gain plenum mod available.

Stealthy and Discrete:

All Motordyne plenum modifications are stealthy. When installed, most people looking at them wouldn't even know a high performance modification was there. The CNC cut spacers conform very tightly to the stock plenums complex shape for a professionally engineered look. And they have a grit blast finish that allows them blend in with the OEM sand cast plenum. The spacers are cut from alloy aluminum and can resist any amount of thermal soak or boost.

All Motordyne products are for off road use only.

If you have any questions we can be reached at: Info@MotordyneEngineering.com

Motordyne Engineering

Motordyne Products are Patent Pending