How do you measure worn valve guides?
The method I use is to check the ID with a small dia. inside micrometer, mic the outside of the valve stem, subtract the two and you’ve got your clearance. After doing this for over 20 years you get a feel for it, and seldom need to do the micrometer thing.
Which tool is best for valve guide diameter?
dial bore gauge
You simply cannot guess or use the “feel” method any longer when it comes to determining the inside diameter of the valve guide. You must measure! The best tool, of course, is a dial bore gauge. Just like a cylinder bore gauge you need to keep the bore round, straight and on size.
What tool is used to measure valve guide?
You must measure! The best tool, of course, is a dial bore gauge. Just like a cylinder bore gauge you need to keep the bore round, straight and on size. The valve guide dial bore gauge allows you to see where the peaks and valleys are in the guide bore.
Which is the best tool to size a valve guide?
Sunnen introduced an industry exclusive “single-stroke diamond reamer/hone” for guides a few years back. This tool has a lot going for it. It works for both cast iron and bronze materials. It’s very easy to use and is adjustable in a range of .005˝ per mandrel. This single pass adjustable tool, once set, will size the valve guide in a single pass.
Is the valve guide size adjustable per mandrel?
It’s very easy to use and is adjustable in a range of .005? per mandrel. This single pass adjustable tool, once set, will size the valve guide in a single pass. The quick disconnect drive makes this process much easier to go from valve guide to valve guide.
How big is a cast iron valve guide?
Sizes range from 5.5mm (.216?) to 12.70mm (.500?) in nominal sizes. These guys are still the choice for cast iron. They don’t need lubrication and should be used with a speed reducer. However I have talked to machinists who use lubrication to extend the life of this type of reamer with good success.
How big should a knurling valve guide be?
Knurling can save a valve guide from being replaced if the wear is less than .005˝, however in my opinion it just a band-aid and will fail in 5000 miles more or less. Sizes range from 5.5mm (.216˝) to 12.70mm (.500˝) in nominal sizes. High-Speed Steel Reamers These guys are still the choice for cast iron.
Knurling can save a valve guide from being replaced if the wear is less than .005˝, however in my opinion it just a band-aid and will fail in 5000 miles more or less. Sizes range from 5.5mm (.216˝) to 12.70mm (.500˝) in nominal sizes. High-Speed Steel Reamers These guys are still the choice for cast iron.
Sunnen introduced an industry exclusive “single-stroke diamond reamer/hone” for guides a few years back. This tool has a lot going for it. It works for both cast iron and bronze materials. It’s very easy to use and is adjustable in a range of .005˝ per mandrel. This single pass adjustable tool, once set, will size the valve guide in a single pass.
How big does a tire valve hole have to be?
On this type of wheel, the coined area must be a minimum of .125 inches greater in diameter than the valve hole. Complete information on specifications can be found in the Tire & Rim Association Yearbook or from your suppliers.
How big is a solid carbide valve guide?
They are available in .001˝ increments and range in size from 5mm (.0197˝) to 9.60mm (.387”) Cost is a little higher than high-speed reamers, but the titanium coating will give a smoother finish. Solid Carbide Reamers A more recent entry into the market, these bad boys are specifically designed for bronze and manganese bronze.