Monday, April 11, 2011

What is taper and ovality in the bore, how is it caused how do you check it?

























What is side clearance on a piston and how is it checked? 





















How can you tell the difference between a inlet and exhaust vavle and why?























What sort of tempatures do the inlet and exhaust valves get up to?

















What temperatures and speeds must the piston be able to cope with?



















Why do we have piston ring end gap clearance ?















What could the result be if the piston ring end gap is too small?











Why do aluminum cylinder heads usually have a steel shim (washer) between the valve spring and the cylinder head surface ?











What is meant by the terms S.I and C.I in a four stroke engine?











7/4/11 What is the purpose of the margin on the valve?













What is the purpose of a core plug?













What is end float and run out on a crankshaft, hows is measured?













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