Manifold Flow Control Orifice

corey    Customization, Hardware, RV Project     engine, manifold pressure

Name: Brass Flow-Control Orifice, 1/8″ NPT, 0.032″ orifice
P/N: 2712T478
Purchased From: McMaster-Carr

Description:

Brass fitting with 1/8″ NPT threads .. male to female. This particular one has a 0.032″ flow restriction orifice.

Comments:

This will be installed on the engine’s manifold, on the manifold pressure line. The purpose is to prevent the manifold pressure sensors from experiencing rapid fluctuations in pressure, making for a more even response. I’m worried this will actually cause minor tuning problems with the engine ECU (which uses manifold pressure to determine appropriate amounts of fuel), so I will have to experiment a little.. and possibly move this to a position after the ECU’s manifold sensor. (Which would require buying a different type of orifice).

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