OP
@yellow300gts avatar
UTC

Enthusiast
300 GTS supertech HPE
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Posts: 76
Location: Icy Norway:)
 
Enthusiast
@yellow300gts avatar
300 GTS supertech HPE
Joined: UTC
Posts: 76
Location: Icy Norway:)
UTC quote
have for a while been aware of som exhaust noise, and to day i dug in to it.
and found a crack(gaping) in the down pipe to my muffler!...any other expirienced the same before??
@steelbytes avatar
UTC

Veni, Vidi, Posti
2019 GTS300 HPE SuperTech 65,000km
Joined: UTC
Posts: 6583
Location: Batmania aka Melbourne, Australia
 
Veni, Vidi, Posti
@steelbytes avatar
2019 GTS300 HPE SuperTech 65,000km
Joined: UTC
Posts: 6583
Location: Batmania aka Melbourne, Australia
UTC quote
Do you have an aftermarket exhaust? If so this is know to sometimes happen (happened to me). Replace the broken manifold with a stainless steel one. (Sip sells them, think scooter West does also)
⚠️ Last edited by SteelBytes on UTC; edited 1 time
OP
@yellow300gts avatar
UTC

Enthusiast
300 GTS supertech HPE
Joined: UTC
Posts: 76
Location: Icy Norway:)
 
Enthusiast
@yellow300gts avatar
300 GTS supertech HPE
Joined: UTC
Posts: 76
Location: Icy Norway:)
UTC quote
thanx for leading me to the part, but it is 350 dollars......so yeah...i'll weld my old pipe!!!
is there any added tension due to the performance exhaust??
@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
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Location: The state of insanity, SoCal
 
Sergeant at Arms
@greasy125 avatar
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15062
Location: The state of insanity, SoCal
UTC quote
Yellow300GTS wrote:
is there any added tension due to the performance exhaust??
yes. especially if installed incorrectly.
@steelbytes avatar
UTC

Veni, Vidi, Posti
2019 GTS300 HPE SuperTech 65,000km
Joined: UTC
Posts: 6583
Location: Batmania aka Melbourne, Australia
 
Veni, Vidi, Posti
@steelbytes avatar
2019 GTS300 HPE SuperTech 65,000km
Joined: UTC
Posts: 6583
Location: Batmania aka Melbourne, Australia
UTC quote
Yellow300GTS wrote:
thanx for leading me to the part, but it is 350 dollars......so yeah...i'll weld my old pipe!!!
less than USD$90

https://scooterpartsco.com/021-vespa-c-801_802/stainless-steel-exhaust-manifold-for-vespa-gts-and-gtv-p-4909.html
@25bikez avatar
UTC

Molto Verboso
2022 Liberty 150S-"Meg"-SOLD
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Posts: 1194
Location: Texas
 
Molto Verboso
@25bikez avatar
2022 Liberty 150S-"Meg"-SOLD
Joined: UTC
Posts: 1194
Location: Texas
UTC quote
Make sure the muffler is not overtightened onto the pipe once you repair the crack. 10 ft lbs is all you need.
The muffler is supposed to slide a bit on the pipe when you're riding. If you make the muffler-pipe connection rigid, the header pipe cracks.
@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15062
Location: The state of insanity, SoCal
 
Sergeant at Arms
@greasy125 avatar
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15062
Location: The state of insanity, SoCal
UTC quote
just to note: OP has a remus dual flow fitted (unless that's changed).

unfortunately, broken exhaust and aftermarket exhaust are somewhat synonymous...
OP
@yellow300gts avatar
UTC

Enthusiast
300 GTS supertech HPE
Joined: UTC
Posts: 76
Location: Icy Norway:)
 
Enthusiast
@yellow300gts avatar
300 GTS supertech HPE
Joined: UTC
Posts: 76
Location: Icy Norway:)
UTC quote
https://www.sip-scootershop.com/en/product/exhaust-manifold-arrow-urban_AR53083KZ?q=exhaust

this is what i was looking at...dunno wtf this is

and yes, laughed at " if instralled incorrectly"
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