COMP Cams Valve Spring Seat Cutting Tool Diameter

COMP Cams Valve Spring Seat Cutting Tools, also called valve spring seat cutters or spring pocket cutters, let engine builders machine the cylinder head spring seat area to the correct diameter for the valve spring being used. Machining the seat lets you install larger-diameter valve springs and hardened spring seats. This is common in performance engine builds.

Key Features:

• Carbide cutting surfaces hold up through repeated cuts
• Cuts the spring pocket and sizes the valve guide boss in a single operation
• Available in a range of configurations to suit different spring sizes, spring designs and aftermarket valve spring seats
• Works with interchangeable arbors/pilots matched to the valve stem to keep the cut square and true (arbor sold separately)
• Made in the USA

Cutting your own spring seats gives you accurate, repeatable results for custom valve train setups. It also saves time and machine shop costs on cylinder head work.