Z3 M Coupe engine problems

[moranor@axis]

pistons look soo good

 

[Peter@AEW]

All things concidered that is surprisingly little wear on them given some of the other's i have seen. Will be watching this thread like a hawk, while gently singing sweet songs to my bank manager and wallet. Why the new springs? Owner going for a rev limit bump?

Yes

 

[Gizmo]

High compression pistons from the USA.

:dropjaw::drool::drool::drool::drool:

 

[Tehwalleth]

Magnificent.

 

[Gizmo]

Why is it that the prettiest parts of an engine are the ones you will never see?

 

[Jeremy]

Those pistons are beautiful.

 

[Daaf Vader]

That is so sexy...

 

[Pho3niX90]

Not sure if I missed the post, but how many KM's did those bearings do? Seems like a common thing across the board for M cars

 

[tyu333]

180 000km but it was very badly neglected in it's life before I bought it. I'd put most of the blame mostly on the previous owners rather than the quality of OEM parts.


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[Peter@AEW]

Bearing failure

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12 brand new double springs for the intake side and 12 brand new double springs for the exhaust side.

.

 

[Ratslaaf]

Eish!

I saw bearing come off an S65 that went over 10k rpm yesterday, I'll post a pic a little later.

Nice going there oom!

 

[Peter@AEW]

Moving along...

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Almost done with the exception of a few minor details such as pistons rings oil pump sump cylinder head cam box inlet manifold exhaust manifold flywheel clutch kit gearbox harness car.........

 

[Peter@AEW]

Alexander (aka Lysis the silent one) doing his thing

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[tyu333]

Beautiful. I'm in love with those pistons


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[UpNcOmiNg!]

Has the crank been knife-edged at all?

 

[Crash_Nemesis]

This looks very familiar. =D

 

[Peter@AEW]

Has the crank been knife-edged at all?

No.

 

[Peter@AEW]

This looks very familiar. =D

It does...........and who knows what the future may bring

 

[Tehwalleth]

Was there any damage to the brores that resulted in the compression issue or was it something else?

 

[Xack]

Has the crank been knife-edged at all?

No.

i assume that it was polished then? also at what point would it require knife edging?