What is the standard bore size of a 1987 suzuki rm250 1987
NO, as the bore size for both bikes are different.
52mm
67.4mm
89.0 mm is the stock bore for the 1989 Honda cr500r.
92mm. 91.948 to be exact, but if its at 92 your in good shape.
4.040". The standard bore is 4.00".
82MM is standard bore and 71.2MM is the Stroke
Cylinder bore [Standard, original size] is 114.3 to 114.338mm according to service manual. For engines of serial number 10X1-UP and 45V1-UP.
THE STANDARD BORE ON THE 354ci HEMI IS 3.983 WITH A STROKE OF 3.625. THE 331 IS 3.813 WITH THE SAME CRANK. THE 392 IS 4.000 IN A TALLER BLOCK AND A 3.906 STROKE CRANKSHAFT
p185-75-14 are the size
4.000" the engine bore size