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Cam Cover Seal Set
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Valve Guide 9mm Set (8) RACE INT/EXH 1959-94 FULLY PORTED HEADS
[607-743760-4]
$99.00

For all race engines 1959-94 with 9mm valves, with race ported runners.

 

  • These INTAKE GUIDES are 8mm shorter than standard. Less protrusion into the port dramatically improves flow.  
  • The EXHAUST GUIDES are only 5mm shorter for extra 3mm length into port to reduce wear.
  • These custom Manganese Bronz valve guides are self-lubricating, resist wear and improve guide longevity.
  • Unlike standard guides, these are tapered for better aerodynamics in the port.   

SEALS:

 

Requires OEM green/black seals sold separately. These seals are furnished in our Reinze gasket sets.

 

NOT USING seals on the exhaust side increases longevity by allowing more lubrication.  Exhaust seals were filtered to street engines in 1978 to gain a miniscule reduction in EPA emissions.  Lack of exhaust seals will not make your engine "burn oil."

 

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.
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