Will these pistons fit ?

[Sweeper]

So i have a few 81mm pistons , and i been asked if they will fit an engine that require 81,5mm pistons(somekind of coupe quattro 1990 engine). I suppose non turbo.

To all tech people around. Will they fit ? If no what kind of machinery work required.

Thanks.

[Audi Parts Guru]

Re: Will these pistons fit ?

Originally posted by Sweeper
So i have a few 81mm pistons , and i been asked if they will fit an engine that require 81,5mm pistons(somekind of coupe quattro 1990 engine). I suppose non turbo.

To all tech people around. Will they fit ? If no what kind of machinery work required.

Thanks.

Sweeper,you should not use 81mm pistons in a block that requires 81.5mm pistons and no amount of machining work can correct this
The only thing you can do is to fit 81.5mm pistons (with the correct clearance)

[Sweeper]

Argggggggg. Then i can't sold thouse f***ing pistons again.

Anyway thanks.

I thought if you will use 81.5 rings with 81 pistons than it will work. Ah. Stupid I.