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| 2. BMW 336 Cam Conversion
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| 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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| 5. BMW airhead motorcycle pistons; swapping heads, rings, pins, clips, keepers, decarboning
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| BMW Airhead motorcycles top end, pistons, swapping heads, cylinders, rings, pins, clips, keepers, decarboning |
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| More Information.... |
| 10. BMW Airhead oil filters
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| 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
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| 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
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| 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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