Mon Jul 12, 2021 7:29 am

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 41059
Location: Pleasant Hill, CA
 
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 41059
Location: Pleasant Hill, CA
Mon Jul 12, 2021 7:29 am linkquote
Are those the cheapo garden hose type of clamps, whose cut threads go all the way through the steel? If so, no wonder they leaked. The correct clamps have stamped threads that do NOT go all the way through, so are much stronger and can properly compress the tough rubber of coolant hoses.
Mon Jul 12, 2021 9:28 am

Molto Verboso
2006 LX150 (carbed) | 2007 GT200
Joined: 29 Jun 2016
Posts: 1678
Location: Toronto
 
Molto Verboso
2006 LX150 (carbed) | 2007 GT200
Joined: 29 Jun 2016
Posts: 1678
Location: Toronto
Mon Jul 12, 2021 9:28 am linkquote
rdhood wrote:
Yes, this is an old topic, but I had the exact same leak and this topic is woefully inadequate on pictures.
Nice contribution!
Mon Jul 12, 2021 10:46 am

Hooked
2013 BV350, 2014 GTS , 2016 GTS, 2013 Downtown 300i
Joined: 03 Mar 2020
Posts: 252
Location: Dahlonega, GA
 
Hooked
2013 BV350, 2014 GTS , 2016 GTS, 2013 Downtown 300i
Joined: 03 Mar 2020
Posts: 252
Location: Dahlonega, GA
Mon Jul 12, 2021 10:46 am linkquote
jimc wrote:
Are those the cheapo garden hose type of clamps, whose cut threads go all the way through the steel? If so, no wonder they leaked. The correct clamps have stamped threads that do NOT go all the way through, so are much stronger and can properly compress the tough rubber of coolant hoses.
No, it was the Piaggo-installed squeeze-type hose clamps. Thus far, I have had 3 fail on my BV350, and now three have failed on the Vespa.

I have absolutely no faith in the factory hose clamps. Cheap garden hose clamps are an improvement as they actually work
Mon Jul 12, 2021 4:37 pm

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 41059
Location: Pleasant Hill, CA
 
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 41059
Location: Pleasant Hill, CA
Mon Jul 12, 2021 4:37 pm linkquote
Actually the Oetiker clamps are pretty damn good - if the right size is used with the right material. PEX plumbing is all done with them - and those joints never leak! They are also the Right Thing to use with high pressure fuel hoses and air conditioning systems in cars.

However, Piaggio have used them with hoses that seem to compress and loosen over many heat cycles. The clamps are good - the implementation is crap. The pressures in a Vespa system aren't even that great.

So Jubilee clips (or equivalent) are the way to go. If the clamps cost less than ~50 cents each, treat them with suspicion.
Sun Aug 01, 2021 5:50 am

Molto Verboso
2006 LX150 (carbed) | 2007 GT200
Joined: 29 Jun 2016
Posts: 1678
Location: Toronto
 
Molto Verboso
2006 LX150 (carbed) | 2007 GT200
Joined: 29 Jun 2016
Posts: 1678
Location: Toronto
Sun Aug 01, 2021 5:50 am linkquote
rdhood wrote:
Yes, this is an old topic, but I had the exact same leak and this topic is woefully inadequate on pictures.
I came across another old thread that has lots of pictures on the removal process. Linking here for reference:
remove the floorboard
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