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).
The exhaust heated throttle fitted to cars sent to America.
| Identifier | ExFiles\Box 13\3\ 03-page175 | |
| Date | 3rd January 1930 | |
| To Hm.{Capt. W. Hallam - Head Repairs} From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} For Depot Sheet. x7080. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} 2/3.1.30. EXHAUST HEATED THROTTLE. V7772. X7910 Cars despatched to America will be fitted with an exhaust heated throttle. This takes the place of the water heated throttle fitted to cars up to E.2B series in England. The exhaust heat is taken from No.4 cylinder exhaust port, through the head to a cast iron hot-spot. It is lead from there to a separate silencer. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||