Old Britts

Commando Crank Case Blanking Plates

The prices listed are current as of 12/14/17.

the plates

We stock four versions of this blanking plate: two plain blanking plates and two modified plates to accept the 1972 crank case breather manifold as described in our technical article, Oil Pressure Loss, Norton 750cc (1972-73). We do not modify the stock plate since it is dished in the center and does not have a flat place to mount the breather manifold.

  1. The upper left plate is the Andover Norton steel plate modified for the breather (part # 06-1542/M, DROPPED)
  2. The upper middle plate is the stock Andover Norton steel plate (part # 06-1542, $8.97)
  3. The lower left plate is the polished 6061-T6 aluminum plate modified for the breather (part # 06-1542/AM, $40.00)
  4. The lower middle plate is the polished 6061-T6 aluminum plate (part # 06-1542/A, $37.00)
  5. The far right plate is an original blanking plate and as you can see it is dished in the center, not having a flat area to mount the breather manifold.

Plate on Engine
This picture shows the modified aluminum plate with the breather manifold mounted to the plate and bolted to the crank case.

Plate on Engine
This picture shows the modified aluminum plate and breather manifold taken from the timing side.

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