OP
@dougw avatar
UTC

Hooked
1974 Rally200, 2007 GTS250ie
Joined: UTC
Posts: 258
Location: Lawrence, KS
 
Hooked
@dougw avatar
1974 Rally200, 2007 GTS250ie
Joined: UTC
Posts: 258
Location: Lawrence, KS
UTC quote
I need to change my oil and replace the O-ring on the oil drain plug. O-ring size is apparently 31.47 x 1.78. There are no Vespa dealers near me to buy this weird size, and paying $10-15 shipping for a $2 O-ring seems rediculous. Can I use a 32.00 x 2.00 O-ring or something similar from the hardware store, or does it have to be that special size?
@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 14965
Location: The state of insanity, SoCal
 
Sergeant at Arms
@greasy125 avatar
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 14965
Location: The state of insanity, SoCal
UTC quote
is yours split, cut or otherwise compromised in some way? if not, just go ahead and reuse it. it'll be no big deal.

you can cram a bigger o-ring in there, but it's not ideal. may result in leaking or getting an improper torque on the drain plug and it either being overly tight or too loose and working its way out. use some sticky grease to get it to stay put and hope for the best.

personally I'd recommend biting the bullet and ordering up one (or a few) and just tack a few extra consumables on there to make it worth your while.
@cosmos avatar
UTC

Addicted
2009 LX 150, 2024 GTS Super
Joined: UTC
Posts: 911
Location: Birmingham, Alabama, USA
 
Addicted
@cosmos avatar
2009 LX 150, 2024 GTS Super
Joined: UTC
Posts: 911
Location: Birmingham, Alabama, USA
UTC quote
^ this.
You can safely reuse an oil plug oring if it is undamaged. I have many times. You can't safely assume an oring from a hardware store is a suitable material for hot engine oil. It may be suitable for water only. (EPDM rubber for plumbing service). If you must gamble, a better source would be an auto parts store. Better yet, as recommended above, order some spares from your dealer along with an oil filter and a belt.
@waspmike avatar
UTC

Ossessionato
LXV 150 3v ie. Midnight Blue (Sold) Now Honda Zoomer X
Joined: UTC
Posts: 4129
Location: Kingdom of Lanna
 
Ossessionato
@waspmike avatar
LXV 150 3v ie. Midnight Blue (Sold) Now Honda Zoomer X
Joined: UTC
Posts: 4129
Location: Kingdom of Lanna
@baba12 avatar
UTC

Molto Verboso
2018 Vespa 300 GTS Touring
Joined: UTC
Posts: 1355
Location: NYC
 
Molto Verboso
@baba12 avatar
2018 Vespa 300 GTS Touring
Joined: UTC
Posts: 1355
Location: NYC
UTC quote
Would this https://www.harborfreight.com/397-piece-metric-o-ring-assortment-67580.html qualify in terms of application i.e. work in this environment for use with the drain plug
@fledermaus avatar
UTC

Veni, Vidi, Posti
2007 LX150 2015 GTS (on the bench) 2017 BV 350
Joined: UTC
Posts: 12107
Location: Fond du Lac, Wisconsin
 
Veni, Vidi, Posti
@fledermaus avatar
2007 LX150 2015 GTS (on the bench) 2017 BV 350
Joined: UTC
Posts: 12107
Location: Fond du Lac, Wisconsin
UTC quote
greasy125 wrote:
personally I'd recommend biting the bullet and ordering up one (or a few) and just tack a few extra consumables on there to make it worth your while.
My typical M.O. For a while I think it added 20% to my cost of riding though. Facepalm emoticon

Which reminds me...I have half a dozen oil filter rings from my old BV which I sold..... freecycle thread, here I come!
⚠️ Last edited by fledermaus on UTC; edited 1 time
@tinddu avatar
UTC

Enthusiast
2022 gts 300 touring
Joined: UTC
Posts: 95
Location: pennsylvania
 
Enthusiast
@tinddu avatar
2022 gts 300 touring
Joined: UTC
Posts: 95
Location: pennsylvania
UTC quote
greasy 125 is right! i would buy 3 or 4
@jimc avatar
UTC

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43907
Location: Pleasant Hill, CA
 
Moderaptor
@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43907
Location: Pleasant Hill, CA
UTC quote
I confess I've never, ever replaced one in all the years I've had Piaggio scooters. They've always been in good condition.
@bluside avatar
UTC

Addicted
2020 GTS 300, 2011 LX150ie
Joined: UTC
Posts: 857
Location: Jupiter, Florida
 
Addicted
@bluside avatar
2020 GTS 300, 2011 LX150ie
Joined: UTC
Posts: 857
Location: Jupiter, Florida
UTC quote
tinddu wrote:
greasy 125 is right! i would buy 3 or 4
I just bought 4 the other day, along with a spare oil drain plug. You never know when one will be needed.
@wbdvt avatar
UTC

Molto Verboso
'16 Sprint S 150, 2 x '06 GTS 250, '12 GTS 300, '74 Vespa 150 Super
Joined: UTC
Posts: 1514
Location: Vermont
 
Molto Verboso
@wbdvt avatar
'16 Sprint S 150, 2 x '06 GTS 250, '12 GTS 300, '74 Vespa 150 Super
Joined: UTC
Posts: 1514
Location: Vermont
UTC quote
Usually a place like Ace Hardware has parts drawers that have orings or you could go to an auto parts store with the oring and they may be able to match it.
UTC

Member
Vespa 150 LX
Joined: UTC
Posts: 5
Location: Klamath Falls, OR
 
Member
Vespa 150 LX
Joined: UTC
Posts: 5
Location: Klamath Falls, OR
UTC quote
I recommend YouTube... West Coast Scooters has a very good series of general maintenance videos for Vespas...
They have parts, too.
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