Manley Performance 33.0mm Race Flo Flat Face Intake Valves | Multiple Acura / Honda Fitments (11690-8) Manley Performance

Race Flo Intake Valves – Set of 8 by Manley Performance

Race Master, and the Pro Flo versions identified as Race Flo valves, are manufactured of XH-426 material for the exhausts and NK-842 for the intakes. This series of valves is targeted at the bracket, drag and oval track racers operating below 8000 rpm – above which engine speed titanium valves are generally required. Any engine builder successfully using EV-8 alloy ( 21-4N ) valves will find in this series of Manley valves a superior piece at a most attractive price. The Ultimate Tensile Strength charts on this page and the next, show the Manley Race Series to be equal to the best that the competitors have to offer.

Features

• Head Diameter: 33.0mm
• Stem Diameter: 5.48mm / .2157”
• O/A Length: 102.40mm
• Tip Length: 2.5mm
• Underhead Angle/Radius: Pro Flo 22° x 5/16”
• Margin: .050”
• Seat Width: .075”
• Top Of Head: Flat Face
• Chrome Stems and Hard Tips
• Swirl Polished and Fully Machined
• NK-842 Stainless Intake Material

Benefits

• Best for drag and oval track racers operating below 8000 rpm – above which engine speed titanium valves are generally required
• Equal to the best that the competitors have to offer
• Up to 40% flow increase in small port OE style cylinder heads
• Proven performance improvement on the flow bench

Please Note: The image provided is generic and may not be an accurate representation of the product you will receive

Applications

• 1992-2001 Acura Integra GS-R
• 1999-2000 Honda Civic Si
• 1994-1997 Honda Civic del Sol VTEC

What’s In The Box?

• 8 – Valves

Warranty

• Manley products, due to their intended use, are sold without warranty.