Manley Performance 31.15mm Stainless Steel Race Master Exhaust Valves | 1989-1998 Nissan 240SX (11147-8)

1989-1990 Nissan 240SX Race Master Exhaust 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: 31.15mm
• Stem Diameter: 6.96mm / .2740”
• O/A Length: 102.4mm
• Tip Length: 3.5mm
• Underhead Angle/Radius: 15° x 1/2”
• Margin: .065”
• Seat Width: .080”
• Top Of Head: 9° Dish
• Chrome Stems and Hard Tips
• Swirl Polished and Fully Machined
• XH-426 Stainless Exhaust 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

Please Note: These exhaust valves feature a 1mm stem diameter reduction in the keeper groove area to allow the use of the same valve springs, retainers and locks as the intake valves.

Applications

• 1989-1998 Nissan 240SX

What's In The Box?

• 8 - Valves

Warranty

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