I use the German OEM hoses so that they are the correct diameter to work
with the hoses.  I changed the clamps on the oil cooler, thermostat to metal
pipe hose and the water pump pipe to right block inlet clamps.  I do not
like the worm clamps because they need occasional tightening as the hose
settles. I have had them dig into the hose and end up not tightening as
tight on the hose and allowing leaks.  On the oil cooler pipe to water pump
I used 16 mm fuel injection clamps to avoid the digging in.

Also clean the hose and fitting to avoid dirt or dirty hoses from being a
problem.

I did have a problem with one clamp leaking before on the hose on the oil
cooler going to water pump and had to put a worm clamp on it to stop the
leak. The hose was a Brazilian hose and I was guessing it was slightly
smaller than the German hose and did not allow as much tightening force.

   This time I used a German hose and it was still loose but I put two black
spring clamps on it to keep it tight. Hopefully this time it will not leak.
I have not driven the van because I miscalculated the amount of coolant I
would need and have to get some more on Monday, then testing.  So far from
what I run it adding the coolant and it is not leaking :)

When I rebuilt my engine I decided to keep the stock clamps because they
were not leaking after 10 years and I figured that having new hoses and
reusing the clamps would still be leak free... (except for two clamps that
leaked and were fixed.  But two out of what 30+ clamps in 16 years is good)

Robert

-----Original Message-----
From: Ken Lewis [mailto:kdlewis_wasting_time@access4less.net]
Sent: Sunday, September 19, 2004 5:29 PM
To: Robert Lilley; vanagon@GERRY.VANAGON.COM
Subject: Re: [VANAGON] 20 hours later and a new water pump and a few other
things...

I have had bad luck with the OEM spring clamps. You seemingly have not. Any
secerts to keep them from leaking?

Ken Lewis
86 Transporter Crew Cab
60 356 T-5 Porsche
http://neksiwel.20m.com/
Vanagon tech, pixs, O2 monitor gadget
----- Original Message -----
From: "Robert Lilley" <RClilleyjr@COX.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, September 19, 2004 7:32 PM
Subject: [VANAGON] 20 hours later and a new water pump and a few other
things...

....... IF you do not have a hose clamp pliers, you need to get some to aid
in the
> installation and remover of the hose clamps.
>
> I picked mine up at Harbor Freight Tools.  I do not think that I could
have
> finished the installation of the many clamps without them!!!