Bj�rn Ratjen wrote:
>
> Hello Volks,
>
> I am currently overhauling a 2.1L Waterboxer with 280000kms.

> 2. What can be done to improve performance?
> (larger valves? different camshaft?
> or: Kompressor also called blower to precharge intake air, would Digifant
> recognize and adjust mixture through O2 sensor, any experiences?)
>
> Let's see what we come up with to make the waterboxer more lasting and more
> efficient.
>
> Bj�rn
>
> Bj�rn Ratjen
> Mill Bay, B.C.
>
> 1987 Vanagon est alia (self camperized)
> 1978 VW Bulli (self camperized)
> 1995 Passat TD Wagon (hers)
> 1970 VW Beetle (son's)

BJORN,

1) How much "more lasting" than 280,000 clicks do you expect ?

2) The Digifant control module would need special information like a
"MAP" sensor to accurately fuel a turbo-charged engine.

3) I can think of no better way to shorten the life of a wasserboxer
than to add the stresses and peak thermal loads associated with
turbo-charging. Leave the turbo for Porsches & diesels !

4) I would be very worried about reusing pistons that had high force
applied during removal - I agree that VW tools are expensive but they
are specified to protect components to be reused from forces that can
weaken or distort their integrity.

Regards,    JP