I have replaced them entirely with Marine Exhaust Hose. Get the wire
reinforced, smooth outside type, 1 1/4" inside diameter. Will not kink
with the gradual bends needed to follow the path of the original pipes.
You will need to enlarge the hole in the crossmember where the pipes
pass through, just like the Bentley says to do when replacing the metal
pipes with the later plastic ones. This 1 1/4" hose easily connects to
the existing radiator and engine hoses for models 1982 - 85 that came
with metal cooling pipes.

Here is a link to the hose I am using.

http://cgi.ebay.com/ebaymotors/Marine-Hardwall-Exhaust-Water-Hose-1-1-4-ID_W0QQitemZ4550097209

Mark

JP wrote:

> Hi all,
>
> I need to replace  my coolant pipes on my 84 westy's (not the flexible
> one)
> Those are the rigid ones that goes from the front to the rear of the
> camper.
> Any other replacement alternative beside the stainless steel pipes
> sold by
> mr prospect? Cant they be replaced by flexible pipes? If so, what is the
> inside pipe diameter and where to get those.
>
> TIA
>
> --
> JP
> 84 westy
>
>