[urq] Engine rebuild?

Maurits Jonkergouw urquattro at moregraphics.nl
Sat Jul 11 04:48:59 PDT 2009

Hi and thanks everyone who replied before!

The head is finally pulled for inspection and here are the results:

Back in 1989 @ 81K km, the block was rebuild with 2x oversized pistons (79,975 mm) (ETKA says 80 mm).
Is it still possible to machine to 3x oversize 80,50 mm WR pistons or could I use the non-oversized (81 mm) pistons from MB or RR (3B etc.) instead, without getting problems like compression etc. (i.e. 80,50 or 81 is the pretty much the same volume-wise)

The head is obviously ready for rebuild but the cylinderblock looks pretty OK, after the rebuild @ 81K it has done 313-81 = 232K km which still is pretty much...

So now I'm thinking of rebuilding the head only and not the cylinders, whould that be bad economy concidering the mileage?

Thanks again,


1986 quattro GV

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