Bores , strokes and capacities of McCulloch Chainsaws

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Interchangability chart Note at this stage this section is still under construction 11-12-2005

Crankshaft PTO style 1. Tapered with keyway 2. Tapered without keyway 3. Stepped

Model ..................Crankshaft No ...........Bore/stroke..........Conrod No.....Size...................................Crank pto end 1-40...........................50659...............2.125"/ 1.375"...............55009............80cc or 4.9 cu/in.........................3 1-41...........................50659...................................................55009...............................................................3 1-42...........................50659...................................................55009...............................................................3 1-43...........................50659...................................................55009...............................................................3 1-45...........................50659...................................................55009...............................................................3. 1-46...........................50659...................................................55009...............................................................3. ==================================================================== 1-50...........................50659..............2.125"/ 1.375................55009............80cc or 4.9 cu/in...........................3 1-51...........................50959..................................................55009................................................................3 1-52...........................50959..................................................55009................................................................3 1-53...........................57830..............2.125"/ 1.375.................55009................................................................3 ==================================================================== 1-60...........................50756.............2.125"/ 1.375..................55009............80cc or 4.9 cu/in..........................3 1-61...........................50756..................................................55009...................... 1-62...........................50756..................................................55009................................................................1 1-63...........................50756..................................................55009................................................................1 ==================================================================== 1-70....................................................2.125"/ 1.50......................................87cc or 5.3cu/in..........................1 1-71..............................................................................................................................................................1 1-72................................................................................................................................................................... 1-75....................................................2.125"/ 1.625....................................95cc or 5.8 cu/in....................... 1-76...........................58128..............2.165"/ 1.635..............48905...............99cc or 6.04cu/in........................1 ==================================================================== 1-80............................55257.............2.125"/ 1.500..............55009..............87cc or 5.3 cu/in..........................1 1-81............................55756...............................................55009.................................................................1 1-82............................57756...............................................55009.................................................................1 1-85............................58128............2.125"/ 1.625................48905...............95cc or 5.8 cu/in........................1 1-86............................58128............2.165"/ 1.635................48905...............99cc or 6.04 cu/in......................1 =================================================================== Mac 15.....................50659a............2.125"/1.375................47903...............80cc or 4.9 cu/in........................3. D-30.........................50025...............2.125"/1.375...............50015.................................................................3 D-36.........................50210...............2.125"/1.375...............55009.................................................................3 =================================================================== D-44.........................51225..............2.00"/ 1.375..................51220..............72cc or 4.4 cu/in........................1 Super 44...........................................2.125"/ 1.375.........................................80cc or 4.9 cu/in....................1 Super 44a...............55257...............2.125"/ 1.50.................55010...............87cc or 5.3 cu/in........................1 D-45...................................................2.125"/ 1.375.........................................80cc or 4.9 cu/in Super 55.................55005...............2.125"/ 1.375...............55010...............80cc or 4.9 cu/in........................1 Super 55a...................................................................................................................................................1 =================================================================== Pro Mac 105.............89222.............2.250"/ 1.635...............88623..........106.5cc or 6.5 cu/in.........................2. SuperPro 105...........89222................................................88623.................................................................2. =================================================================== CP125......................69346..............2.280"/ 1.835.................69250...............123cc or 7.5 cu/in.....................2 CP125s.....................69346..................................................69250...............................................................2. Super Pro 125..........85476..................................................85606...............................................................2. Super Pro 125c........85476..................................................88623...............................................................2. =================================================================== 200.............................50659..............2.125"/ 1.375..............55009a.............80cc or 4.9 cu/in..................3 250.............................50659a............2.125"/ 1.375..............47782a.............80cc or 4.9 cu/in..................1 250 late.....................50659a.............2.125"/ 1.500..............47903...............87cc or 5.3 cu/in..................1 Super 250..................60313..............2.125"/ 1.500..............47903...............87cc or 5.3 cu/in...................1 Super 250 .................50659a............2.125"/ 1.375..............47782a.............80cc or 4.9 cu/in...................1 300.............................60313..............2.125"/ 1.375...............47903..............80cc or 4.9 cu/in..................1 380.............................60313..............2.125"/ 1.50.................47782a............87cc or 5.3 cu/in..................1 380a...........................60313..............2.125"/ 1.50.................47782a.......................................................1 440.............................60724..............2.125"/ 1.50.................47782a.......................................................1 450.............................60313..............2.125"/ 1.50.................47903..............87cc or 5.3 cu/in..................1 =================================================================== 550............................64440..................2.165"/ 1.635................47903..........99cc or 6.03 cu/in.................1 Super 550.................63440..................2.217"/ 1.635................47903.........103cc or 6.3 cu/in..................1 =================================================================== 640..........................50756a...............2.125"/ 1.375................47903.........80cc or 4.9 cu/in......................1 650..........................61860..................2.125"/ 1.50.................47903..........87cc or 5.3 cu/in.....................3 660..........................61860..................2.125"/ 1.50.................47903..........87cc or 5.3 cu/in.....................3 =================================================================== 740..........................58128..................2.165"/ 1.635...............47782a.........99cc or 6.04 cu/in..................1 790.......................................................2.217"/ 1.635...................................103cc or 6.3 cu/in................1 795..........................58128.........................................................47903........103cc or 6.3 cu/in.................1 797..........................66010..................2.280"/ 1.835................66049........123cc or 7.5 cu/in....................1 Super 797.......................................................................................................................................................... =================================================================== 840...........................58132..................2.165"/ 1.635.............47782a...........99cc or 6.04 cu/in..................1 890...........................58128..................2.217"/ 1.635.............47782a...........103cc or 6.3 cu/in..................1 895...........................58128..................................................47903.............103cc or 6.3 cu/in...................1 895c.........................89222..................................................88623.............103cc or 6.3 cu/in...................2 ===================================================================   McCulloch Kart Engines ...Bore and stroke. Super /101 series Model ....................Crank No...........Bore / Stroke.............Conrod No..............Size............................Crank PTO type Mc 10.................................................2.125"/ 1.50.............................................87cc or 5.3 cu/in....................1 Mc 20.................................................2.125"/ 1.635.........................................................5.8 cu/in..................1 Mc 30.................................................2.165"/ 1.635.........................................106.5 or 6.05 cu/in...................1 Mc 40.................................................2.165"/ 1.635.........................................................6.05 cu/in................1 Mc 45.................................................2.165"/ 1.635.........................................................6.05 cu/in................1 Mc 70.................................................2.217"/ 1.835.........................................................7.08 cu/in................1 Mc 75.................................................2.250"/ 1.835.........................................................7.29 cu/in................1 Mc 100/ 1966.......................................2.250"/ 1.835.........................................................7.29 cu/in...............1 Mc 101/ 1967..........68898....................2.280"/ 1.835..............66049..............123cc or..7.5   cu/in....................1 Mc 101a.................69250....................2.280"/ 1.835..............66049...............................7.5 cu/in.................. Mc 101aa 1972....................................2.280"/ 1.835......................................................7.5 cu/in Mc 101b   1974.......69346....................2.280"/ 1.835..............66049................................7.5 cu/in....note 90872 ? Mc 101c...1969.......68898....................2.280"/ 1.835..............66049................................7.5 cu/in Mc 101d...1971....................................2.280"/ 1.835..............69250................................7.5 cu/in Mc 101 mc 1973..................................2.280"/ 1.835.......................................................7.5 cu/in Mc Culloch 90 series engines Model....................Crank No...........Bore / Stroke...............Conrod No...............Size..........................Crank PTO type MC5 1960.........................50756..............2.125/1.375.................55009..................4.9........................................1 MC6 1961.........................48744..............2.125/1.500..................55009..................5.3.......................................1 MC7 1962.........................48586..............2.165/1.635..................48905................6.05.......................................1 MC8 1963.........................48586b............2.165/1.635..................47782................6.05.......................................1 MC9 1964.........................48586c............2.165/1.635..................47903................6.05.......................................1 MC90 1966..........................48586c...........2.165/1.635..................47903................6.05.......................................1 MC91 1966..........................48586c............2.165/1.635..................47903...............6.05.......................................1 91A...........................48586c............2.165/1.635..................47903...............6.05.......................................1 1968 91B...........................48586c............2.165/1.635..................47903...............6.05.......................................1 1970 91B/1........................48586c............2.165/1.635...................47903...............6.05......................................1 1970 91C............................48586c...........2.165/1.635...................47903..............6.05.......................................1 1972 91M/C........................89140............2.165/1.635...................47903...............6.05...............Straight grove and key 1973 MC92.........................91085............2.165/1.635...................47903...............6.05......................................2 1974 MC93.........................91085a..........2.165/1.635...................47903...............6.05......................................2 1977  SP125c crank has Bolt on counterweights  Footnote this list has been compiled from my vaste array of Mc IPLS and Mike Acres excellent chainsaw site Can you shed any light on the crank and rod p/n's for MC101 motors. Crank 69346 p/n was used for keyed and keyless (LH thread) cranks. Any idea what crank p/n90872 is that Nolid_2 is selling on ebay as a 101B crank? Rod 66049 used for 101/101C was that the long rod with big wrist pin (5/8")? Rod 66250 used for 101A. Rod 90391 was the shot peened magnafluxed rod accessory part issued about 101B timeframe, that included a set of needle rollers. The stock 101B rod was 86415, was that shot peened and magnafluxed? Bores , strokes and capacities of McCulloch Chainsaws