Description
PRECISION VALVE GUIDESIE performance valve guides directly replace the OE guides providing longevityreliabilityand performance for your cylinder head build.IMPORTANT INFORMATION Oversized Valve GuidesIf your cylinder head has had the valve guides replaced previouslyit is recommended to confirm the inside diameter of the holes in the cylinder head before installing new guides. In some casesthe holes in the head have wornrequiring valve guides with larger outside diameters to be used. It is common practice to use oversized guides only where needed; they do not need to be used unless that particular hole is out of specification. Before installing oversized valve guidesbe sure to ream the holes to the correct diameter to include the proper press-fit.Valve Guide Undersized Inside DiameterAll IE valve guides are sold with an undersized inside diameter. This allows the engine builder to ream the guides after installation and set the stem-to-guide clearances exactly where they need to be since different valve materials require different clearances. This feature eliminates any guesswork associated with replacing the guides. To make installation simplewe machine a small centering lip on the tip of each valve guidewhich allows them to press into the head straight and consistently. See below section for recommended valve guide clearances.Recommended ClearancesEvery engine builder will have his or her own specsbut as a general rule of thumbwe use the following valve-to-guide clearances.Ferra Stainless Intake – 0.0008to 0.0012Ferra?Super?Alloy?Exhaust? – 0.0013 to? 0.0015Ferra Stainless Exhaust? – 0.001 to?0.0015SupertechStainless Intake? – 0.0014 to? 0.0024Supertech Stainless?or?Inconel?Exhaust? – 0.0018 to? 0.0028TECHNICAL INFORMATION Valve Guide MechanicsValve guides are small cylindrical bushings that press into a cylinder headgiving valves a place to reciprocate with minimal friction and wear. They facilitate valve movement and keep them perfectly centered on the valve seats. Lastlythey allow heat to transfer from the combustion chamber into the cylinder headwhich is then cooled by engine coolant.Why You Should Replace Your Valve GuidesWhen it comes time to rebuild your cylinder headit s very likely that you will find the OEM valve guides worn beyond wear limits. As mileage begins to add upthe inside diameter of your valve guides will wearcausing excessive clearance with the valve stems. Even on engines that have no modificationsit is common to see oil consumptionirregular valve wearor even complete valve failure if the guides have become excessively worn.Performance Upgraded Valve GuidesIntegrated Engineering performance valve guides work as direct OEM replacements while offering several unique features to improve performance and increase longevity. IE valve guides are manufactured in our CNC machine shop from a proprietary bronze alloy and feature ultra-high concentricity for exact valve placement. This ensures that the head of the valve sits in the exact center of the seatremoving any possibility of leaks. Our premium alloy improves wear resistancereduces frictionand improves heat transfer. By increasing thermal conductivity by 10%you can expect extended valve life and reduced wear on valvetrain components.Aerodynamic DesignTo increase airflow through the intake and exhaust portswe have designed our valve guides with an aerodynamic tip that does not protrude into the airstream like the factory units. IE valve guides are designed to directly replace the factory guides and work well for all rebuildswhether it be an OEM refresh or a complete race engine build!ADDITIONAL NOTESDirect replacement for OEM valve guides part 058 103 419 / 051 103 419 Requires installation by machine shop Sold individuallyENGINE APPLICATIONS VW – Transverse 1.8T Engines (06A) |Requires? 20Guides VW -Longitudinal? 1.8TEngines? (06A & 058) |Requires? 20Guides VW – 2.8L V6Engines? |Requires? 30Guides Audi -Transverse? 1.8TEngines? (06A) |Requires? 20Guides Audi? – Longitudinal 1.8TEngines? (06A & 058) |Requires? 20Guides Audi? – 2.7T V6 Twin Turbo? Engines? |Requires? 30Guides Audi? – 3.0L V6Engines? |Requires? 30Guides Audi? – V8 Engines (Call to Verify Part Number) | Requires 40?Guides Valve guides are sold individuallyplease verify the required amount and engine fitment above*
