Castlenau Navigation marine engine, Arcachon, FR

Discussion in 'Identification' started by PaulGray, Jul 15, 2011.

  1. PaulGray

    PaulGray New Member

  2. petternut

    petternut Administrator

    Its a very pretty thing. What threads and head sizes does it use?

  3. PaulGray

    PaulGray New Member

    Roland- I am in the process of disassembling it. Will report back what I find.
  4. PaulGray

    PaulGray New Member

    I posted additional pictures of the head assemblies on the picasa site. So far, the threads are all metric, many fine threads on the crankcase covers (5-6 mm). The bore is 75mm. Further searching on the net says it may be connected with Albert Couach who was a marine engine/boat pioneer from Arcachon, FR. Very well made; there are 5 main bearings on the crank. Boxed bronze bearings on the con rods which are round with flat ends to bolt the brasses to. I have to remove the lower rod bearings off the crank to get the cylinders off to push out the pistons. Not rust stuck, just stuck from sitting for many years. The bores are all in great shape all things considered. So if anyone has info on Albert Couach, let me know. Apparently his son makes some very high-end modern boats.

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