The first 5 years had metal pipes, the next 20 years or so had plastic,
even as the engines became more powerful. Clearly VW did not consider
metal pipes to be the way to go.

Mark

Kenneth Lewis wrote:

>    I have to agree with Richard on this one.  First, the Digifant series
> has plastic tubes which would be comparable, in heat loss, to rubber
> hoses.
> Second, even if you lost some cooling effect from the tubes, this
> radiator
> is used to satisfactorily cool much  larger engine transplants, so it has
> plenty of extra capacity .
> Ken Lewis
> http://neksiwel.20m.com/
>
>