Saturday, 12 April 2014

Delage DISS

As the engine has been built prior to a 40 yr storage period, it had been just a case of checking over. This particular big end cap had shims fitted, there is a locating dowel and small lip along the inner edge of the cap to locate the shim during assembly, unfortunately one shim had become trapped in the lip at some point of assembly. It will be easily rectified but if it had been trapped during the machine boring stage of the white metal bearing, it would mean that the clearance against the journal would be reduced if reassembled with the shim in position.

There are 23 valve train components (prior to the rockers) per each cylinder.
All beautifully made by Delage.

Perrot Shaft assembly to transfer the braking force from cable to brake shoe cam, whilst accepting steering and suspension movement. Interestingly there are hardness test witness marks on even the most insignificant steering and brake parts, a reflection of the engineering quality.


  1. Are you referring to what look like hardness marks on the cam and perrot shaft? - Your right, some components are tested, some of the others, particularly on the cams are to aid assembly, it is possible to get the cam and shaft upside down (as I'm sure you've figured out) Unfortunately there is no consistency, on most I have seen, the dimple is at the top, but I have seen some where it is at the bottom.
    It looks like the car is coming along nicely.
    Colin Swinbourne

  2. Thank you Colin. Mostly I had seen the dimples on the chassis items inc some bolts. The engine had been built and stored so I have only checked a few items.

    1. It's a little late now, but re reading this I realise how part of your comment by passed my brain are right yes the dimples do align the BRAKE cam and not the engine cam as I misunderstood!