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  1. dirk589

    Engine bearing failure

    No,nothing has been changed.My engine runs the normal oil pump,whereas the other has an external belt driven pump that gives even more pressure. I am convinced thanks to Your reactions that the oil flow is being interrupted momentarily somehow. I will reinvestigate clearance and drive with...
  2. dirk589

    Engine bearing failure

    Thanks for reaction,Pat. The engine is a DOHC with a lot of gears and chains. I went to 10-60 oil to save the gears as they are unobtainable being late fifties design.I always thought that clearances were greater in those times as well,hence. The clearance is about .002".Tap is 2.1" diameter...
  3. dirk589

    Engine bearing failure

    Hi guys, I have a bearing problem that puzzles me for some time. Engine is a 1900 cc racer based on MGB block. After 4 races the conrod bearings look like being damaged by detonation(slightly crazed surface,leading to cracks when not replaced). The puzzling thing is that both top and bottom...
  4. dirk589

    Helmholtz resonance box with Weber carbs

    I am constructing a resonance box for my 4-cyl twin Weber car.Do I need to connect the float chambers with the box or can they stay under atmospheric presure? Dir/Antwerp
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