connecting-rod-weights-11-031-85-2162-585

( ( Service-Information Motorcycle BMW of N.A. Service Department Group: 11 Engine May 1985 11 031 85 (2162) For USA and Canada Only Connecting Rod Weights — Kand Boxer Models General Information: Note: For any engine with more than one cylinder to run smoothly, it is important for the weights of each connecting rod to differ as little as possible from each other. BMW connecting rods are divided into seven weight catagories when manufactured, differing in weight by 7 – 8 grams. They can be identified by color coding. Only connecting rods in the same weight catagory should be installed in an engine. Connecting rods can be ordered by color code. Please use the chart on the back of this Service Information for reference when ordering. All connecting rod bolts should be tightened as specified in our workshop manual. For safety, connecting rod bolts should not be re-used. Very truly yours, BMW OF NORTH AMERICA, INC. ~~ Richard Dampf , National Technical Manager Motorcycle Group RD: ch Catagory Kl00 l 2 3 4 5 6 7 RS0/5 l 2 through 3 4 Rl00RT 5 6 7 R65 l 2 3 4 5 6 7 11 031 85 ( 2 1 6 2 ) [‘,lCJC’ 2 Color code 3 x yellow 3 X blue l x yellow 1 x white 1 x blue 2 x yellow 2 x blue 3 x yellow 3 x blue l x yellow l x white l x blue 2 x yellow 2 x blue 3 x yellow 3 x blue 1 x yellow 1 x white l x blue 2 x yellow 2 X blue Weight Part number 478 + 4 g 11 24 l 461 610 486 – 611 494 612 502 613 510 614 518 615 526 616 553 + 3 g 11 24 l 338 150 559 151 565 152 571 153 577 154 583 155 589 156 523 + 3 g 11 24 1 338 157 ( 529 – 158 535 159 541 160 547 161 553 162 559 163