m3 s50 life

[veet]

Is 100k miles too much for an s50 engine? Comes out of an automatic 95 m3.

[mbonder]

no

[FredK]

Assuming it received reasonable maintenance, 100k miles is fine for an S50.

Just make sure the retainers have been replaced if the engine has a production date of <10/95. The retainers (top spring plates) are a known failure point of earlier engines. If the valve collet pulls through, you'll drop a valve.

I would do a compression or leakdown test just to see where you stand.

[mbonder]

Always have to be more descriptive than me don't you Fred!

[FredK]

haha, I figured a little more detail would be a little more reassuring. :mrgreen:

In any case, even if the engine has a early production date, you can replace the upper spring plates, but this requires some specialized tools and know-how.