chappo Posted September 11, 2018 Report Share Posted September 11, 2018 Guys, Got a centre casing on my Cub that’s past it’s sell buy date. Im looking for a replacement, the replacement I’ve found has the same E4087 number as mine , but mine is stamped underneath that as AM 1, the replacement is AM 2. They look identical but that’s from a comparison of photos , not in person. Will the casings be the same, I’m assuming the AM number is probably a casting batch and the part number is the E4087. Thanks. Quote Link to comment Share on other sites More sharing options...
naichuff Posted September 11, 2018 Report Share Posted September 11, 2018 Just checked a few cases My left crank case has AM2 while the right is just AM and are a matched pair The outer clutch and timing cases are marked AM2 The inner timing case is AM1 What this is I do not know batch or type of alloy used? Quote Link to comment Share on other sites More sharing options...
carl ekblom Posted September 11, 2018 Report Share Posted September 11, 2018 Perhaps identification of the mould plugs? Quote Link to comment Share on other sites More sharing options...
naichuff Posted September 11, 2018 Report Share Posted September 11, 2018 Just checked some pistons and they are marked AM and AM 2 The timing cases are three different types and are marked the same but different E part numbers Quote Link to comment Share on other sites More sharing options...
section swept Posted September 11, 2018 Report Share Posted September 11, 2018 Sounds like these are just casting numbers and not matching case numbers. If line boring and other matching of cases has been carried out then I would expect to see after casting markings and not cast in markings. Complicated aint they these Cub devices! Quote Link to comment Share on other sites More sharing options...
naichuff Posted September 11, 2018 Report Share Posted September 11, 2018 (edited) I have several crank cases and the numbers are stamped on next to the joint underneath So match up after boring Edited September 11, 2018 by naichuff Quote Link to comment Share on other sites More sharing options...
chappo Posted September 12, 2018 Author Report Share Posted September 12, 2018 11 hours ago, section swept said: Sounds like these are just casting numbers and not matching case numbers. If line boring and other matching of cases has been carried out then I would expect to see after casting markings and not cast in markings. Complicated aint they these Cub devices! Are they ever. Give me a Sherpa engine any day of the week and I’ve not even started rebuild this Cub engine yet. Anticipating the air being rather blue when I start ????????????? Quote Link to comment Share on other sites More sharing options...
section swept Posted September 12, 2018 Report Share Posted September 12, 2018 8 hours ago, chappo said: Are they ever. Give me a Sherpa engine any day of the week and I’ve not even started rebuild this Cub engine yet. Anticipating the air being rather blue when I start ????????????? Might be blue after you’ve rebuilt and fire it up....oil smoke. Quote Link to comment Share on other sites More sharing options...
chappo Posted September 12, 2018 Author Report Share Posted September 12, 2018 5 hours ago, section swept said: Might be blue after you’ve rebuilt and fire it up....oil smoke. It’ll be interesting, just ordered a load of parts, the engine rebuild should begin Monday if the parts arrive. Wheels frame and suspension are done, just that lump in the middle. Quote Link to comment Share on other sites More sharing options...
section swept Posted September 12, 2018 Report Share Posted September 12, 2018 2 hours ago, chappo said: It’ll be interesting, just ordered a load of parts, the engine rebuild should begin Monday if the parts arrive. Wheels frame and suspension are done, just that lump in the middle. Happy spannering? Quote Link to comment Share on other sites More sharing options...
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