Re: 190K on an eta--not that much!

["Eric M. Hunt" <bmw1@xxxxxxxx>]

As a matter of fact, I just saw a 528e with 358K.  I know of another 528e with 253K.  These things just don't quit.

Eric
87 325ic

Thomas Stork wrote:

> ra rabmw wrote:
> >    Rick;
> >         You don't mention what you're asking for your 325eta car.190K on an
> >eta engine is quite alot compared to the 535i's 200/300k lifetime
> >possibilities,and it sure will scare some people.
>
> Funny thing--I would have told him just the opposite, that the eta engine was designed for long wear, with low compression, relatively forgiving ring tolerance, etc.
> On top of that, the cars that had the eta were geared very high for fuel economy, with 2.79/2.93 differentials and overdrive, so that the number of revs that an eta
> was likely to have turned for each of those miles was pretty low (a cynic might also point out that since they aren't very free-revving engines and they have high
> torque at low revs, the owners are not likely to wind them out as often driving around town as a non-eta driver might--and they'd probably be right).
>
> Since the wear on an engine varies geometrically with the engine's average speed over its lifetime, I'd guess it's probably likely that an eta under normal driving
> would have a longer life expectancy (if you call it living!) than a big six, and if you expect a big six to get 200/300K, a well-maintained eta with 190 has a lot of life
> left.  But obviously, YMMV.
> - Tom
>
> BMWCCA #131072
> '85 635csi
> '86 325es (formerly)
> '81 320i (formerly)
> '73 Bavaria (formerly)
>
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