BMW Motorcycle Engines: Tuning and Maintenance, Repair and Overhaul - Articles from the Experts

2. BMW 336 Cam Conversion

BMW type 247 engine I'd heard stories for years about hot-rodded airheads, with CC Products piston kits, lightened wrist pins, higher compression, dual plugs, racing cams, Krauser heads, turbocharging. But I'd also heard lots of stories about engines self-destructing, thrashed bearings, burned pistons, wrist pins coming loose, Krauser heads with poor oil flow....

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3. BMW airhead motorcycle clutch, flywheel, clutch carrier, cables

BMW airhead motorcycle clutch, flywheel, bolts, levers, parts

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4. BMW airhead motorcycle Oil and Filter Change Procedures and Technical information by Snowbum, Snobum

Oiling system, BMW airhead motorcycles

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5. BMW airhead motorcycle pistons; swapping heads, rings, pins, clips, keepers, decarboning

BMW Airhead motorcycles top end, pistons, swapping heads, cylinders, rings, pins, clips, keepers, decarboning

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6. BMW Airhead motorcycle, pushrod tubes, push rod tube seals

BMW airhead motorcycle pushrod tubes and pushrod tube seals

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7. BMW Airhead Motorcycles Cam, Camshafts, Sprockets, crank nose bearing, cam seals

BMW Airhead motorcycle camshafts, cam sprockets, cam tips, bearing holder

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8. BMW Airhead Motorcycles Flywheel lightening

Lightening flywheels BMW motorcycles, snowbum, snobum

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9. BMW airhead motorcycles rocker arms, shafts, valve gear, pushrod tubes, top end

BMW airhead motorcycles rocker arms, shafts, valve gear, pushrod tubes, top end

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10. BMW Airhead oil filters

Changing the oil filter is normally a simple task but there are a few places where you can go wrong due to idiosyncracies in BMW's designs. Here's a brief run-down on the designs and the things you need to look out for.

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11. BMW Airhead oil pans

BMW Airhead oil pans, sump pickups, and dipsticks There were two upgrades for road models during the life of the 24x motor. In 1976 the pan was deepened slightly, and in 1981 the pan was deepened substantially and redesigned to include a baffle plate. Dipsticks were lengthened correspondingly, although the cutoff points for them are nowhere near being clear or consistent.

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12. BMW Airhead rocker arms

There were four rocker arm systems used on /5 and later Airheads. Each system includes the rocker arm itself, the rocker blocks, the rocker shaft and the mounting posts on the head. Since valve adjustment is near and dear to the heart of every Airhead, and valve noise goes hand in hand with the adjustment and the rocker system, some might take the opportunity to upgrade their bikes to more robust and quieter rockers.

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13. BMW Boxer Opening the Tranny...

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14. BMW Boxer Replacing The Rear Main Seal

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15. BMW Boxer Timing chain measurements

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16. BMW cylinder head valves

BMW motorcycle valve sizes

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17. BMW motorcycle cylinders

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18. BMW motorcycle engine assembly, break-in, timeserts, helicoils,

BMW airhead motorcycle top end, cylinders, assembly, dissassembly, rings, pistons

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19. BMW motorcycle valve adjustment

, SWB, LWB, wheelbase, spokes, seat modification, tanks, gas caps, side stands,

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20. BMW motorcycle wrist pin bushing

, replace, measure. small end

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