hi,
I've seen them not squease tightly enough to seal after a while, probably
more due to corrosion on aluminum under a hose, is one factor.
Plus the fiddly/hazard factor.
I don't replace them with the common FLAPS hose clamp - the ones with sharp
edges that can dig into a hose, that have the 5/16's hex head.  Those are
for emergency use in my opinion.
  I get really nice german ones, narrow, with a slightly turned up edge, and
a 6 mm hex screw on them.
I tighten those with a quarter inch ratchet , not just a screw driver. They
don't get tight enough that way, and they get chingered up from the screw
driver slipping out of the slot.

Interestingly, at least to me, I was just harvesting a turbo exhaust
manifold and cylinder head off an 84 Jetta in a pick n' pull junkyard
recently ......
and it had these 'good german' clamps, the ones I like,  on all connections,
like maybe  they didn't used the spring clamps on that year vw perhaps.

----- Original Message -----
From: "Greg Potts" <greg@POTTSFAMILY.CA>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, September 13, 2009 5:29 PM
Subject: Re: Coolant hose replacement

> Hi Scott,
>
> Really? Those spring clamps don't loosen off over time, or strip out
> like the worm-gear clamps. Yes, they are a PITA to work with, but I've
> never seen one fail. I do carry worm gear clamps in my toolbox as
> insurance though, as they can be used on a wider variety of diameters.
>
> Happy Trails,
>
> Greg Potts
> 1973/74/79 Westfakia "Bob the Tomato"
> 1987 Wolfsburg Weekender Hardtop
> www.busesofthecorn.com
> www.pottsfamily.ca
>
> Scott Daniel - Turbovans wrote:
>> I usually get rid of those springy hose factory hose clamps too. They're
>> a hazard, and only for assembly at the factory, in my opinion.