[Healeys] Cam wear question

[Oudesluys]

120.000mls on a camshaft is not to bad, remember that in the old days 
European engines, incl. the Austin engines needed a rebuild after 
40-60.000mls and this was with proper maintainance. After all more was 
not needed as the cars rusted out between 3 and 5 years. These days we 
expect well over 300.000mls and prolonged service intervals and gross 
negligence while the bodies last well over 20 years in general, even 
with salt on the road.
Today with modern oils old engines last quite a bit longer, but regular 
use, longish trips and careful warming up of the engine is of great 
importance.
Kees Oudesluijs

Op 26-12-2016 om 0:32 schreef Bob Spidell:
> The cam we just pulled out of my BJ8 showed considerable wear, even 
> though I'd changed the oil regularly (I did get almost 120K on it).  I 
> can see how a roller cam would suffer less wear since there could be 
> considerably less friction on the lobes, but don't see why OHC cams 
> don't suffer similar wear since they apply similar pressure--minus the 
> lifter and pushrod weight--on either followers or the valves 
> directly.  What am I missing?
>
> Bob
>
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