Valve Guide Cleaning Reamers for Continental and Lycoming Engines
McFarlane offers special reamers in the necessary sizes to clean your Continental and Lycoming engine exhaust valves. Standard reamers manufactured for aircraft valve guides are designed to perfect the guide hole size when reaming new guides. The patented McFarlane cleaning reamers have a pilot the same size as the valve stem. This properly sized pilot forces the reamer cutter to start straight and follow the correct valve stem path through the guide hole. Finally, a tool that is designed for the job! While using standard reamers to clean valve guides, you probably have noticed that you have some valve guide metal in the reamer flutes afterwards. This metal is cut from the sides of the guide when hard carbon deposits displace the unguided reamer from the original guide hole, or the reamer was not started in alignment with the guide hole. Wavy or gouged guide holes cause premature carbon buildup, poor heat transfer, and early guide hole wear. Prevent damage to your valve guides by using McFarlane Cleaning Reamers! |
Part Number | Finished Ream Diameter (Corresponds to valve guide ID) | Pilot Diameter (Corresponds to valve stem diameter) |
---|---|---|
Lycoming Cleaning Reamers: | ||
VGR-LC-KT | Contains one of each sized reamer | |
VGR-LC1 | 0.4040-0.4050 | 0.4012-0.4020 |
VGR-LC2 | 0.4370-0.4380 | 0.4320-0.4333 |
VGR-LC3 | 0.4985-0.4995 | 0.4935-0.4945 |
VGR-LC4 | 0.4995-0.5005 | 0.4957-0.4965 |
Continental Cleaning Reamers: | ||
VGR-CN-KT | Contains one of each sized reamer | |
VGR-CN1 | 0.3750-0.3758 | 0.3715-0.3725 |
VGR-CN2 | 0.4350-0.4362 | 0.4310-0.4320 |
VGR-CN3 | 0.4365-0.4375 | 0.4320-0.4330 |
VGR-CN4 | 0.4370-0.4378 | 0.4325-0.4335 |
VGR-CN5 | 0.4375-0.4385 | 0.4330-0.4340 |
VGR-CN6 | 0.3427-0.3435 | 0.3390-0.3400 |
Please note, Aircraft Spruce Australia's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Australia assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
The Mcfarlance catalog shows this kit working for both continental and lycoming engines.