Kibblewhite Bronze Valve Guide - Exhaust, Oversize

Kibblewhite Bronze Valve Guides for exhaust valves are replacement engine valve guides made for rebuilds and cylinder head repair. They are oversize guides. They restore proper valve stem clearance in heads whose original guide bores are worn or have been machined for repair.

Key Features:

• Bronze alloy construction: Bronze guides conduct heat well and wear well. They also resist galling, which helps in the high-temperature exhaust valve position.
• Oversize outside diameter: The guides suit cylinder head bores that have been machined oversize. They give a firm, accurate press fit during head restoration.
• Exhaust application: They are made for exhaust valves, which run hotter than intake valves and need good heat transfer and lubrication.
• Precision machining: Consistent dimensions and finishes support correct valve stem clearance, stable valve alignment, and reliable valve seat sealing.
• Performance and durability: The guides suit street, performance, and racing engine builds where long service life and accurate valve control matter.

Kibblewhite Precision Machining is known for performance engine components for builders and professional machine shops. These valve guides are usually installed by a machine shop. The guide bores are then reamed or honed to the correct valve stem clearance. Use them with a matching valve stem size and follow the engine manufacturer's specifications.