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LAS Aerospace Ltd Logo
LAS Aerospace Ltd
The Global Parts Supplier
01837 658081
sales@lasaero.com
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32nd Edition Catalogue
Now Available!
Lasaero 31st Edition Catalogue
  1. Products
  2. McFarlane Parts
  3. Tools and Miscellaneous
  4. Valve Guide Cleaning Reamers for Continental and Lycoming Engines

Valve Guide Cleaning Reamers for Continental and Lycoming Engines

Why McFarlane Special Reamers?
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 standard reamer pilot is sized to fit the small bore of a new unfinished guide to insure stability and a straight finished bore. When this same type of reamer is used to clean the valve guides, the pilot is smaller than the finished hole. This causes the reamer to wander and misalign while it is being started and turned in the guide hole.
 
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 build-up, poor heat transfer, and early guide hole wear. Prevent damage to your valve guides by using McFarlane Cleaning Reamers!

  • P/N VGR-LC-KT for Lycoming engines.
  • P/N VGR-CN-KT for Continental engines.
  • Spiral flutes for a better guide finish.
  • Pilot sized specifically for cleaning.
  • Cleans guides without notching guide surfaces.
  • Constructed of precision ground, high speed tool steel.
  • Patent # US 9,878,354 B1.

Note: Reference Lycoming Service Instruction 1425A, SSP-1776 and SSP-578 and the appropriate overhaul manual or the appropriate Continental service information to determine which specific valve guide sizes you have and the required reamer size before purchasing the necessary cleaning reamer. Lycoming Mandatory Service Bulletin No. 388C requires exhaust valve guide cleaning every 300 hours for helicopter engines and every 400 hours for all other engines. McFarlane valve guide reamers are for cleaning carbon build-up only and must not be used for finish reaming of new valve guides.

Maintenance Tip:
Lycoming suggest using ordinary cup grease on the flutes of the reamer to remove deposits with the reamer rather than allowing the deposits to fall into the cylinder.

VGR-CN-KT
VGR-CN-KT
Part Ream Diameter (Corresponds to valve guide ID) Pilot Diameter (Corresponds to valve stem diameter) Price  
Continental
VGR-CN-KT Contains one of each sized reamer Contains one of each sized reamer £435.71 0
VGR-CN1 0.3750-0.3758 0.3715-0.3725 £73.54 0
VGR-CN2 0.4350-0.4362 0.4310-0.4320 £73.54 0
VGR-CN3 0.4365-0.4375 0.4320-0.4330 £73.54 0
VGR-CN4 0.4370-0.4378 0.4325-0.4335 £73.54 0
VGR-CN5 0.4375-0.4385 0.4330-0.4340 £73.54 0
VGR-CN6 0.3427-0.3435 0.3390-0.3400 £73.54 0
Lycoming
VGR-LC-KT Contains one of each sized reamer Contains one of each sized reamer £369.76 0
VGR-LC1 0.4040-0.4050 0.4012-0.4020 £88.61 0
VGR-LC2 0.4370-0.4380 0.4320-0.4333 £91.34 0
VGR-LC3 0.4985-0.4995 0.4935-0.4945 £85.59 0
VGR-LC4 0.4995-0.5005 0.4957-0.4965 £108.94 0

Stocking, processing
and delivering aerospace parts

Hello and welcome to our website. Contained within these pages is most of the information found in our printed catalogue, all available to order online! In addition you can search our entire inventory of over 125,000 part numbers.

Stock and pricing of all parts listed on this site is live, all prices exclude VAT and shipping. All orders are subject to our standard terms and conditions.

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and easy ordering

All our stock is available for next day delivery. In addition we have distributorships for Aircraft Tool Supply, LP Aero Plastics, Falcon Gauge, Ceconite / Randolph and Shield Technology to name but a few!

We are also the UK and European distributor for Aircraft Spruce and Speciality, with whom we have been doing business with for over 25 years.

Should you ever need any further information then our experienced sales team are just a phone call or email away and will happily answer any questions you may have.

Company

LAS Aerospace Ltd is registered in England No 2041506

VAT No GB 316 6191 09

Contacts

Address: Exeter Road Ind Est, Okehampton, Devon, EX20 1UA UK
Phone: +44 (0)1837 658081
Fax: +44 (0)1837 658080
Email: sales@lasaero.com
Hours: Mon - Thur 8am-5pm (excl Bank Holidays) & Fri 8am-4pm.

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