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Valve Guide 9mm Set (4) Race Intake FULLY PORTED HEAD
[607-43670-2]
$0.00

FOR FULLY PORTED HEADS WITH ENLARGED INTAKE PORT DIAMETER.

Our special made Manganese Bronz Alloy valve guides are designed for full race use.  

  • The aerodynamic nose of these race intake guides are positioned at minimum protrusion into the port for optimum flow. 
  • For fully ported intake side, these guides are 8mm shorter than stock to reduce exposed length in  port and improve flow.

WARNING:

We do not recommend chopping the guides flush with the port contour.  This practice does not leave enough total guide length to stabilize the lateral thrust of the valve stem.  The precision movement of the valve off the seat is far more important than the small amount of flow increase gained.

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Spruell Motorsport Alfa is your source for performance parts for Alfa Romeo.
We specialize in Alfa Romeo 101, 105 and 115 drive train products for engine, gearbox, differential and wheels.
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