How to identify a cylinder head or block?
How to identify a cylinder head or block?
Identifying A Cylinder Head Or Block- When the identity of a head or block is not known, it is best to first attempt to locate an identifying number or mark. A casting number is usually stamped or cast into the cylinder head or block. All casting numbers known to AERA have been listed in this manual.
What should the thrust of a cylinder block be?
For clockwise rotation, stand in front of the engine and face toward it. The major thrust surface is the left side of each bank of cylinders (toward the passenger-side of the block for every cylinder). That’s where the thickest readings should be typically .300 inch or better, but no less than .250 inch.
What kind of block do you need for a hot rod engine?
A well-prepared short block is every bit a player as every other component in your engine’s power arsenal. The first place to start is with a well-prepared cylinder block. Block material is limited to iron or aluminum alloy, but there are many other factors to consider.
When do you need head and block resurfacing?
Regardless of what type of engine work you do in your shop (stock, performance, diesel, marine or anything that comes in the door), you need the ability to surface heads and blocks. Deck surfaces on high mileage heads and blocks are often corroded, pitted, scratched and/or out-of-flat – especially if the engine blew a head gasket or overheated.
Identifying A Cylinder Head Or Block- When the identity of a head or block is not known, it is best to first attempt to locate an identifying number or mark. A casting number is usually stamped or cast into the cylinder head or block. All casting numbers known to AERA have been listed in this manual.
Why are cylinder heads important in a racing engine?
Race-prepared cylinder heads are the most important component in a racing engine. Most of the power an engine makes comes from the cylinder heads and their ability to fill the cylinders and evacuate them efficiently. Not surprisingly, a substantial portion of a racing engine budget goes to cylinder heads to ensure a competitive build.
Can a cracked cylinder head be repaired with cast iron?
Steel pins should be used in the valve seat area because steel can withstand heat better than cast iron. A cracked cylinder head or engine block may or may not be bad news depending on the size and location of the crack (s), the value of the casting and what it will take to fix the crack (s) versus what it would cost you to replace the casting.
Where are the casting numbers on a cylinder head?
Known casting numbers for cylinder heads may be found in the cylinder head section. Similarly, cylinder block casting numbers may be found in the cylinder block section of this manual. The corresponding engine manufacturer, displacement(s), and specifications are detailed in the alphabetical listing section.
