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  1. Steve

    Steve Loyal Comrade

    My 1970 601 has developed a nasty rattle at low revs and the general consensus is the crankshaft has a worn bearing(s). So I am on the lookout for a replacement unit or crankshaft cheaper than ordering from Germany. Anyone on the forum in the UK got one for sale?
  2. Steve

    Steve Loyal Comrade

    Well since my last post above, I have partially stripped the engine, removed cylinder heads and barrels. Checked for play in the big ends, small ends, gudgeon pins, where I found very little. Checked piston rings, which I found out are pegged, so be careful to position them correctly on reassembly. I did a decoke while I had the chance, and then put it all back together. Guess what, the rattle has gone, and the engine runs fine, so I think the rattle was not the crank but maybe loose cowling parts vibrating. At least I hope it was. Time will tell.
    RogerDerSchrauber likes this.
  3. kev the builder

    kev the builder Loyal Comrade

    did you leave the head gaskets off for a bit more compression/performance,if it was just a loose cowl it was a nice easy fix
  4. Steve

    Steve Loyal Comrade

    Yes I did, Kev. To be fair I haven't really noticed any difference in power but then I don't often use full throttle except on a hill climb. See you soon to collect the car.
  5. Andrewwoey

    Andrewwoey Loyal Comrade

    Its nice when you find its not as bad, as first thought.

    Andy.
  6. kev the builder

    kev the builder Loyal Comrade

    When you get some carbon build up it will increase the compression a bit more,I've put all the spares inside it ready for you

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