Tony Martyr | 11/01/2012 14:33:02 |
![]() 226 forum posts 45 photos | The drawing of the HP cylinder block contains an error.
The through drillings of the exhaust ducts are plugged - the drawing note to that effect calls for 7/16x40 tpi plugs.
It should read '7/32x40tpi plugs.
I think the plugging is better done by taking the holes through to the HP valve face where there is more metal than the sides of the casting as shown in the design.
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