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Re: Early eta rebuilds (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by Bob. on August 20, 2001 at 13:54:25:

In Reply to: Re: Early eta rebuilds posted by Jean on August 20, 2001 at 00:22:41:


Pretty much. The eta pulls so well and so smoothly that a lot of former owners of (especially) American cars shift early and use more throttle than is wise. There's no harm in maintaning speed on a level road in 4th gear at 1200 rpm or 5th gear at 1500 rpm, but using full throttle to accelerate or climb a hill IS abuse.

Unlike turboprop equipped aircraft, we are not blessed with a shaft-torque gauge, but we can guestimate by assuming that if additional throttle does NOT result in acceleration in a particular gear, then we should shift down to a lower gear to accelerate.

Bob

Due to the "lugability" of the eta engines, many US buyers pull torque from the willing engines at low rpm, causing early connecting rod bearing failure. I replaced my con-rod bearings at 100,000 miles and they were at that point worn well into the copper. It isn't the car's fault, and after bearing replacement (and valve guide seal replacement) the car went another 150,000 miles without problem.

Bob


What do you mean by "pull torque from the willing engines at low rpm"?
Please explain.

Thanks

Jean


Do you mean using a taller gear in lieu of a lower one? For example taking a turn on third instead of second gear?




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