This service includes everything listed under the minor service. And changing transmission oil, drive shaft oil, rear drive oil; check all bulbs, switches and accessories for proper operation; pull wheels to inspect brake lining; grease brake pivots, wheel bearings and swing arm pivots front and back; check spoke tension and wheel true, lube cables, check shock eyes for cracks and deterioration.
Engine Group upgrade and rebuild
Basic Crankshaft service, without heads. Long block service, with cylinder heads. Gasket set with improved double lip seals and set of 6 clutch bolts, both required. For /2 only: Set of 4 driveshaft bolts.
Complete bearing set with spherical roller bearing – recommended. Complete bearing set, R50- R60/2 (not R68/R69) includes individual bearings: Spherical roller bearing (rear for R68-R69S; recommended for R50-R60/2) Cam bearing; front and/or rear main bearing, R50-R60/2 “Nose” bearing on crank.
Piston and Cylinder recommendations made after inspection. Cylinder hone, set of installed new rings with 4 piece oil scraper, boring cylinders (if necessary for new pistons); new Kobelschmidt pistons with rings and wrist pins; Repair broken cylinder fins.
Upgrades, and other cool stuff: Beadblast crankcase and timing cover; set of 4 polished stainless steel pushrod tubes installed; Beadblast and paint barrels gloss black New grommets and zero resistance copper plug wires; lightened and balanced flywheel; “Passive” oil cooler (replica of Hoske unit from 1950’s); deep sump oil pan.
Engine service upgrade and rebuild
Cylinder heads- basic valve job. Disassemble, clean and beadblast heads; inspect and measure springs. Install new valve guides with stem seals. Re-cut to 3 angle valve seat. Dress 45” on valve face. Black Diamond one piece stainless steel stellite tipped valves (I recommend replacing valves, if necessary, as a set-- If one is worn out-of-tolerance, then the others are usually pretty close).
Additional Engine Services: If your springs are fatigued and have lost lift, I can shim them to boost pressure; or, complete new spring kits are available R69S, R69, R68-- spring kit for two heads R50 through R60/2-- spring kit for two heads.
Note that late in 1966 BMW upgraded their valve stem type to a rotating design. All replacement valves are of this improved type and require the use of appropriate upper spring retainers and grooved keepers. We offer titanium retainers for their greater durability, strength and lightweight characteristics, along with offering steel keepers.
