Ford Cosworth YB DOHC 16v Turbo Garolite Intake Spacer
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This 3/8 inch thick intake spacer is designed for the Ford Cosworth YB DOHC 16-valve Turbo engine. The engines that are compatible with this spacer will have the intake manifold as shown below. This spacer fits between the upper and lower intake manifolds, as shown.
The longer runners will help high-end power by straightening the airflow towards the cylinder at a farther distance from the valve, allowing it to gain momentum.
Insulating spacers have been around for a long time, and are a proven performance item.
Installation of this spacer is very straightforward, and is the same process as changing the stock gasket.
I recommend buying an extra stock gasket from your local parts store, and sandwiching the spacer between two stock gaskets. RTV or equivalent sealant can also be used.