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).
Options to fix high oil consumption on a Bentley chassis.
| Identifier | ExFiles\Box 27a\1\ Scan374 | |
| Date | 3rd March 1936 | |
| URGENT To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Derby. Copy to..... Hr. Original Bentley Levallois Re: CHASSIS B.113.BL - Mr. Paul SPENGLER Oil Consumption on Bentley Chassis. With reference to our memo VA9/ET.24.2.36, to which we attached copy of our memo VA4/ET.21.2.36, this customer telephoned to us from Mulhouse this morning and has informed us that after having made a fairly long trip with his car, he found that the oil consumption worked out at 2 litres per 100 Kms. and asks what we are going to do about it. Sr. has asked me to write to you to say that he proposes sending WHA. (Allen Jr.{Mr James Royce}) to Mulhouse to fit one of the oil pump springs etc.. which you recently gave him, drive the car back to Paris and make careful check of the oil consumption during the journey to Paris. If the fitting of the oil pump spring does not make any appreciable improvement, we think that there are only two alternatives: 1. Remove the connecting rods with the lead bronze bearings and in their place fit a set of "Hall's metal" big end bearings as per your memo Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}12/KW.24.2.36. As you will observe from our memo VA4/ET.21.2.36, it was after fitting a set of lead bronze bearings that the trouble has occurred. If you consider that we should fit a set of Hall's metal bearings, would it be advisable to fit them to the existing "drilled up" type rods or to the original "non drilled up" type rods, which we have not yet sent to the Works for modification. 2. Boring out the cylinders and fitting a set of Aerolite pistons complete with the EB.2686 type scraper ring. Unfortunately, it will be rather an expensive job if we have to change the big end bearings or bore out the cylinders. There is one thing which is very important and that is, we have got to make the job right and we therefore must have the material at hand at the time we make arrangements with the owner to collect his car. Mr. Spengler did not fail to point out to us rather strongly that it would be most inconvenient for him to let us have the car again for repairs. As you will have observed, he resides at Mulhouse, which is quite a fair distance from Paris. We shall be glad to have your advice upon the matter as soon as possible. We have in stock a cylinder block with .010" oversize aerolite pistons. Sr/VA.VA [Signature] | ||