External oil cooler, coolant hose replacement?

[camron at worldaccessnet.com (Camron D. Crouse)]

Hey all.  I have a Volvo Turbo external oil cooler setup I'd like to 
install.  Once piece of information that I am missing from old 
discussions is what to do about the coolant plumbing in a 16V (currently 
with stock oil/water cooler to be removed).

Specifically, I'd like to know if I need to replace the heater bypass 
pipe with one from any earlier non- oil/water cooler setup.  I can see 
two reasons for doing such:

1. The pipe on my car has the T to connect to the stock 16V oil/water 
cooler.  This outlet needs to not be there or otherwise capped such that 
  coolant does not pee out.
2. The pipe on my specific car has some corrosion on the outside at a 
bend near the oil cooler interface.  Would be nice not to spring a leak 
and not pee out of here too.

OTOH, I can see a few reasons to just leave well enough alone:

1. Scarcity of needed early-style pipe sans oil/water cooler interface. 
  My local Euro-FLAPS claims NLA.
2. Ability to "Bolt-cap" by stuffing a bolt into stub of coolant hose at 
this unneeded junction and hose-clamp a seal. (This would be cool to 
make a quick-drain coolant change plug.)
3. Currently running non-corrosive waterless coolant - unlikely to rust 
from inside heater pipe.
4. Huge PITA

Input encouraged, though I am definitely leaning toward keeping the 
existing pipe.

- Camron from Vancouver, WA USA
    '86.5 Black 16V 2.0L


PS... from an old discussion

David Utley wrote:

> 
> Waterpump to center flange on head (JH) 026-121-053-g, 17.12 list
> waterpump to heater bypass pipe 055-121-063-a, 8.80 list
> 
> I think the top listed hose will work on any engine, anyone with different experience please correct me...  The outlet in question will be straight instead of angled towards the passenger side...
> 
> HTH
> 
> David

>>>> -----Original Message-----
>>>> From: scirocco-l-bounces@xxxxxxxxxxxx
>>>> [mailto:scirocco-l-bounces@xxxxxxxxxxxx]On Behalf Of Ryan H
>>>> Sent: Sunday, October 17, 2004 8:25 PM
>>>> To: scirocco-l@xxxxxxxxxxxx
>>>> Subject: Exernal oil cooler, coolant hose replacement?
>>>>
>>>> On a 16V, I'd like to replace the stock water/oil
>>>> cooler with an external air/oil cooler, like those
>>>> from a Volvo... are there any replacement coolant
>>>> hoses without lines running to the stock cooler, or
>>>> any method to plug/connect these lines?
>>>> P.S. - track only car, sees hot weather, hence the
>>>> different cooler.
>>>> Thanks all.