25MM COLD AIR INTAKE MANIFOLD INSULATOR TO SUIT ALLOYTEC VZ-VE 3.6L V6

(Exclusive to MACE Engineering, our design-registered manifold insulator to suit Alloytec V6 including VZ-VE Commodore, Captiva, Rodeo/Colorado, LY7, LEO 3.6L V6.)

Key Benefits:

* Produces a cooler intake and intake manifold charge resulting in better power consistency.

* A cooler intake charge also reduces the tendency for detonation, meaning more ignition timing or boost for more power

* Improves low end torque by increasing runner length

* Improves air distribution into the cylinder heads

* Better fuel economy

* Easy to install

* Reusable over and over again

* No undesirable side effects

What are manifold insulators and what do they do?

Manifold insulators are a thermal insulating spacer that fits between your upper and lower intake manifold. Made from a heat blocking composite, our manifold insulators will increase engine power by keeping the intake cooler, and increase low end torque by increasing runner length.

But how do manifold insulators keep the intake manifold cooler?

Given our manifold insulators are made from a composite material with a thermal conductivity of 0.29 W/m*K as opposed to aluminium, which has a thermal conductivity of 150 W/m*K; The difference works out to be that aluminium conducts heat 500 times higher than our composite material.

Also, with gaskets often made out of steel (20 W/m*K thermal conductivity), placed between the upper and lower manifolds, replacing a .5mm gasket with a 25mm manifold insulator will conduct an amazing 2000 times less heat (yes, that's over 200,000% reduction!). What this basically means is that it becomes very difficult for the engine to heat up the manifold through heat conduction, which ultimately means more power for extended periods (i.e. considerably fewer heat soak issues).

Our composite material also exhibits high stiffness and compressive strength, can withstand temperatures up to nearly 150C, and has a thermal expansion coefficient very similar to aluminium to increase sealing capabilities. In addition, the spacer can also withstand boosted conditions with ease.

Dyno Results

The following test was conducted on a 2007 model Holden Statesman, with a standard Alloytec 6 before and after fitting a 12mm insulator. Looking at the graph, we can see that power produced down low had increased by a staggering 10%! While power also increased virtually across the entire rev range. Please note that these results don't reflect the true nature of the on road gains given the lack of actual airflow, which further drop inlet temps.

Under these normal driving conditions the plenum (upper manifold), with the insulator in place, becomes cool enough to comfortably touch. Unlike before without the manifold insulator installed under the same driving conditions, where the manifold is often very difficult to touch without getting burnt.

POWER RUN, BEFORE AND AFTER MANIFOLD INSULATOR

What's Included for the alloytec insulator?

A pair of 25mm manifold insulators, longer manifold bolts and gasket sealer.

Please note we offer a set of 12MM and 25MM Manifold Insulators to suit the Alloytec LEO and LY7.