lower-compression-engines-173-073m-673

u ( Tech.Cust.Service vs-201 ga/LP/fm Motorcycles R50/5, 60/5, 75/5 Group 11: Engine Munich, June ’73 No. 1/73 (073M) e Ref: Engine with lower compression – BMW R50/5 – R75/5 Dear Sirs, To prevent the occurrence of “pinking” in countries with low octane fuel, our motorcycle models /5 are now available (since January ’73) with engines having a lower compression figure. They can be ordered at the same price as normal models quoting the Code No. 45.l. The lower compression is obtained by using a cylinder base gasket 1.2 mm in thickness. This reduces the compression as follows: R60/5 R75/5 from 9.2 to 1 from 9.0 to 1 to 8.6 to l to 8.5 to 1 The R50/5 engine is already designed to take low octane fuel and has a compression of 8.6 to 1. A performance drop of approximately 5% is to be expected. The cylinder base gasket, Part No. 11 11 1 257 092 can be ordered through the usual channels. Yours faithfully, BAYERISCHEM OTOREWN ERK Aktiengesellschaft ppa. i .. ~~/’”\.,.~ Delleske Kenntnis genommen – Pris connaissance – Noted – Tornado nota – Presa conoscenza Ablage – Archives – File – Archive