I've just put back the cases together on the Rally overhaul (8 bolts present) and noticed this hole. Im convinced there was nothing in there when I disassembled it.
If this is completely obvious please feel free to abuse my incompetence

OP
![]() Sat, 01 Mar 2014 21:38:26 +0000
Hooked
'65 Sprint 177/ '17 GTS300
Joined: Mon, 28 Oct 2013 13:51:27 +0000
Posts: 461 Location: Dorset, UK |
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OP
Hooked
![]() '65 Sprint 177/ '17 GTS300
Joined: Mon, 28 Oct 2013 13:51:27 +0000
Posts: 461 Location: Dorset, UK |
Sat, 01 Mar 2014 21:38:26 +0000
quote
Cant figure out what goes in here?!
I've just put back the cases together on the Rally overhaul (8 bolts present) and noticed this hole. Im convinced there was nothing in there when I disassembled it. If this is completely obvious please feel free to abuse my incompetence ![]() |
![]() Sat, 01 Mar 2014 22:16:38 +0000
Veni, Vidi, Posti
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: Sun, 05 Sep 2010 19:41:21 +0000
Posts: 6064 Location: Northants UK |
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Veni, Vidi, Posti
![]() 1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: Sun, 05 Sep 2010 19:41:21 +0000
Posts: 6064 Location: Northants UK |
Sat, 01 Mar 2014 22:16:38 +0000
quote
I'd have a look on the exploded parts diagrams on the Vespaspares or SIP web sites and see if anything's there as a listed part. Should put your mind at rest!
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![]() Sat, 01 Mar 2014 23:31:59 +0000
Veni, Vidi, Posti
px200 cutdown,px180,px150. Puch SR. Puch scooterette
Joined: Wed, 08 Apr 2009 08:40:28 +0000
Posts: 5109 Location: west aus |
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Veni, Vidi, Posti
![]() px200 cutdown,px180,px150. Puch SR. Puch scooterette
Joined: Wed, 08 Apr 2009 08:40:28 +0000
Posts: 5109 Location: west aus |
![]() Sun, 02 Mar 2014 04:27:13 +0000
Addicted
Joined: Mon, 02 Jan 2012 04:02:45 +0000
Posts: 629 |
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Sun, 02 Mar 2014 04:27:13 +0000
quote
there can be holes that are not all the time used
if it is threaded then it is a stator plate screw securing point if you can see all the way threw it then it could be a case bolt |
OP
![]() Sun, 02 Mar 2014 09:17:15 +0000
Hooked
'65 Sprint 177/ '17 GTS300
Joined: Mon, 28 Oct 2013 13:51:27 +0000
Posts: 461 Location: Dorset, UK |
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OP
Hooked
![]() '65 Sprint 177/ '17 GTS300
Joined: Mon, 28 Oct 2013 13:51:27 +0000
Posts: 461 Location: Dorset, UK |
Sun, 02 Mar 2014 09:17:15 +0000
quote
Yes...all four case bolts are in, in that particular area...
It does appear to be a case bolt because it goes into a blind hole (will check if its threaded, ive just run out of bolts!) Its an odd one because this version from SIP just hasnt got it there. http://www.sip-scootershop.com/en/products/crankcases+piaggio+for+vespa+_43352000 Its not a stator plate hole though because those three are raised and this hole sits at the back |
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Sun, 02 Mar 2014 20:11:38 +0000
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it's vestigial, kind of like an appendix.
Pre-P 125/150 engines, of witch the Rally was basically evolved from had that top case bolt in a different position. it was moved to accommodate the longer rotary pad cutout on the 200's and the P's. there's other vestigial bits on later cases from earlier features; the side transfers on 200's are another example.
Positive
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OP
![]() Sun, 02 Mar 2014 21:21:13 +0000
Hooked
'65 Sprint 177/ '17 GTS300
Joined: Mon, 28 Oct 2013 13:51:27 +0000
Posts: 461 Location: Dorset, UK |
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OP
Hooked
![]() '65 Sprint 177/ '17 GTS300
Joined: Mon, 28 Oct 2013 13:51:27 +0000
Posts: 461 Location: Dorset, UK |
Sun, 02 Mar 2014 21:21:13 +0000
quote
Excellent...thanks Rob.
I'll ignore it and it should work fine...much like my appendix Kevin |
![]() Sun, 02 Mar 2014 21:40:14 +0000
Veni, Vidi, Posti
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: Sun, 05 Sep 2010 19:41:21 +0000
Posts: 6064 Location: Northants UK |
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Veni, Vidi, Posti
![]() 1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: Sun, 05 Sep 2010 19:41:21 +0000
Posts: 6064 Location: Northants UK |
Sun, 02 Mar 2014 21:40:14 +0000
quote
Well done Rob, I just learnt a new word I can drop into the occasional Vespa conversation...
Vestigial - 'forming a very small remnant of something that was once greater or more noticeable' Every day's a learning day...and you can sleep soundly too now Kev |
RIP
Mr. Clean
![]() P,SUPER,V90, 50 Special
Joined: Tue, 27 Jul 2010 15:35:42 +0000
Posts: 10205 Location: This is't my locker! |
Sun, 02 Mar 2014 22:25:33 +0000
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Thumbs up for Rob.. for constantly sharing his wealth of knowledge on this stuff.
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Mon, 03 Mar 2014 00:54:52 +0000
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it's only early P cases that have it- later revision molds didn't incorporate that bit.
funny enough, pre-P cases have a vestigial lump in roughly the same area as the later stud, even to the extent of having a hole in the gasket there. That's a vestige of an alignment pin used on VNAs to align the case halfs, like the pin down by the oil drain hole in the bottom of the case. later cases went to using a raised lip around the crankshaft hole and the upper alignment pin was omitted. Quote: Thumbs up for Rob.. for constantly sharing his wealth of knowledge on this stuff. Just to throw it out there- i hope some out there pay the favor back- i'm close to launching a full online ordering website to branch out in the mail order side of my business. it'll be an automated way to special order pretty much anything SIP carries.
Positive
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![]() Mon, 03 Mar 2014 04:21:32 +0000
Ossessionato
ET2, PX150
Joined: Fri, 15 Jun 2007 18:44:56 +0000
Posts: 3410 Location: Denver CO |
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Ossessionato
![]() ET2, PX150
Joined: Fri, 15 Jun 2007 18:44:56 +0000
Posts: 3410 Location: Denver CO |
Mon, 03 Mar 2014 04:21:32 +0000
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rob hodge wrote: bah. no problem. you'd be shocked the shit i've got floating around in my head about these things. Just to throw it out there- i hope some out there pay the favor back- i'm close to launching a full online ordering website to branch out in the mail order side of my business. it'll be an automated way to special order pretty much anything SIP carries. |
![]() Wed, 21 May 2014 18:18:35 +0000
Hooked
1974 Rally (3), 1971 Rally 180, 1960 Li 125
Joined: Thu, 20 Mar 2014 20:35:16 +0000
Posts: 426 Location: Southern California, USA |
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Hooked
![]() 1974 Rally (3), 1971 Rally 180, 1960 Li 125
Joined: Thu, 20 Mar 2014 20:35:16 +0000
Posts: 426 Location: Southern California, USA |
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