Engine Rebuiling-Performance Engine Rebuilding-Automotive Machine Shop
Performance Automotive ® 475 S Prairie St, Bethalto, IL 62010 (618) - 377-0027.................. Site Designed By AMS Web Designs 1-413-566-0037
Cylinder Head Pressure Testing
CYLINDER HEAD PRESSURE TESTING A MUST!!!
All Cylinder Heads and Blocks should be pressure tested especially the "Cooked" ones.With today's modern Multi-Valve Light weight, high output Aluminium Cylinder Heads with Cast Iron Blocks, it has become essential to have a good quality hot and cold Hydraulic Pressure Tester.
THE MOST IMPORTANT CRITERIA TO MEET IS THAT OF: Eliminating Comebacks
The customer must be confident that the "Problem" has been positively identified. Major Piston manufacturers and Cylinder Head Gasket manufacturers that have been consulted have confirmed the need for High Quality Pressure Testing to take place when an engine is reconditioned or remanufactured. With the great difference in Expansion Rates between aluminium, cast iron and modern light weight design, it has become essential to have a High Quality Pressure Test done in order to detect Fractures and Porosity in cores.Tests have proven :that some cores only fracture on disassembly and not when the engine overheats,that some fractures are only evident after a Cold Hydraulic Test, then a Hot Hydraulic Test followed by another Cold Hydraulic Test. It is important to note that these three tests have to be carried out in rapid succession - 10 minutes maximum