Product Description
Down Channel Restrictions are part of the idle circuit in the main body. The size of this orifice will restrict fuel flow during idle. When increasing compression and cam on an engine, these should be enlarged to allow more fuel to flow with less vacuum.
We can size these for you Upon request, just put size needed in notes at checkout.
.125"OD
The restriction is about .030". It is small to allow you to size as required for your application.