I believe the difference is the stroke of the 1.9 being longer.

----- Original Message -----
From: R.Joseph Murphy <joseppi@THE-SPA.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, August 30, 1999 10:30 AM
Subject: 1.6 -> 1.9 pistons ??

> Hey Folks,
>
> In the I-4 diesel engines is the only difference between the 1.6 and the
> 1.9 piston the diameter? wrist pin diameter and wrist pin to top of
> piston the same dimension?
> I understand one can put thier existing 1.6 diesel head on to a new 1.9
> shortblock. So I'm assuming clyinder spacing is the same.
>
> NA pistons and Turbo Pistons differ also correct?
>
> Are the 1.9 specs posted any where?
>
>
>
> Many thanks,
>
> joseph