I'm working on a customers Mk3 engine and noticed it has an extra cast in lump at the front of the crankcase, under the iso mount and in line with the centerline of the engine itself. The engine number dates from approx the last 800 to be built, probably 1976-77. Did the factory intend to use a crank sensor or similar? All the other Mk3 engines i have or seen don't have this extra lump
Late Mk3 engine crankcase differences
- Thread starter dobba99
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Anything like this?
Photos courtesy of 'Bigbossmonty', who sent me these pictures of a Commando engine he'd bought.
This particular crankcase protrusion appears to have what looks like a blanking plate attached by two bolts, other protrusions seem to be just a plain casting.
This particular crankcase protrusion appears to have what looks like a blanking plate attached by two bolts, other protrusions seem to be just a plain casting.
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- Nov 20, 2004
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- 21,110
You'd have to ask Bigbossmonty (who hasn't signed in since June).
Fast Eddie
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Looking at the lockwired bolts blanking off the primary cover mounting points, I’d say it was a race engine of some kind.
