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oil starvation (was: Bearing noise location)

Subject: oil starvation (was: Bearing noise location)
From: (Denise Thorpe)
Date: Wed, 29 Nov 95 17:25:35 PST
Ulix asked:

> On Wed, 29 Nov 1995, W. R. Gibbons wrote:
> > Has anyone ever experienced wear that could be fixed simply by replacing 
> > the rod bearings?  I mean, fixed for the long term?  
> Well it certainly has nothing to do with a rebuid, but doesn't driving 
> without oil (or too little) affect the rod bearings first? (I don't 
> really know why, it's just a feeling...)
> A friend of mine changed rod brgs only on a Lancia Monte Carlo (Scorpion 
> in US) because of a slight brg noise. The old brgs looked pretty bad, but 
> the crank was still good. He never had any problems after that. The 
> engine only had 40k on it though... (that's probably the key issue here).

Someone (the aforementioned Pat, late of Octagon) told me (Have you noticed
that people are always telling me things?) that if the oil in an MGB engine 
is below halfway between full and add, then the cam isn't getting any 
lubrication.  Scary, huh?  I have a nasty habit of forgetting to check my
oil and I once had a cam lose a lobe suddenly, but I've never had excessive
wear on the rod bearings.  Maybe what goes first from oil starvation depends
on the car.

Denise Thorpe

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