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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Status report on cylinder head investigation and single cylinder research items.

Identifier  ExFiles\Box 30\4\  Scan149
Date  13th April 1934 guessed
  
(5)

ITEM
DESIGN POSITION.

CYLINDER HEAD INVESTIGATION AND SINGLE CYLINDER RESEARCH.

Ramp cylinder head for single cylinder (3"bore)
For Straight '8' engine.
In hand.

Cylinder and fittings - 3" bore Straight '8' engine -
Single Cylinder Test Unit.
In hand.

Ramp cylinder head - For 5" x 5.5" complete engine.
See RR.'A' engine.

Inlet valve rocker to increase valve lift to .425".
3.25" x 4.5" Single Cyl.Unit.
Completed.

End cover and breather modifications.
3.25" x 4.5" Single Cyl.Unit.
Completed.

Larger exhaust valve in ramp head.
3.25" x 4.5" Single Cyl.Unit.
Completed.

Valve and cam lifts - ramp cylinder head -
Kestrel Single Cyl. Unit.
Completed.

Valve rockers for Pent House Roof Cyl.Head -
Kestrel single Cyl.Unit.
Completed.

Modifications to ramp head - 3.25" x 4.5" Single
Cyl.Unit.
In hand.

Investigation of separately spring valve push rod.
In hand.
  
  


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