OP
UTC

Lurker
Joined: UTC
Posts: 3
 
Lurker
Joined: UTC
Posts: 3
UTC quote
Can i fit a 166 malossi big bore kit or a dr180 big bore kit to a gs160 engine. Can i drill out and modify the casings to fit a conventional carb? Will it run????
@cubastreet avatar
UTC

Hooked
rollin on 8s
Joined: UTC
Posts: 283
Location: NZ
 
Hooked
@cubastreet avatar
rollin on 8s
Joined: UTC
Posts: 283
Location: NZ
UTC quote
isn't a gs160 engine worth heaps more in it's original state?
OP
UTC

Lurker
Joined: UTC
Posts: 3
 
Lurker
Joined: UTC
Posts: 3
UTC quote
quite possibly but thats not what i asked Razz emoticon
OP
UTC

Lurker
Joined: UTC
Posts: 3
 
Lurker
Joined: UTC
Posts: 3
UTC quote
i dont have a gs scoot just the engine parts and was trying to make something out of the parts i have. i dont the gs carb but do have a couple of kits and px carbs ect. Laughing emoticon
@speed_kills avatar
UTC

Addicted
Mostly Lambrettisti
Joined: UTC
Posts: 648
Location: SF, CA
 
Addicted
@speed_kills avatar
Mostly Lambrettisti
Joined: UTC
Posts: 648
Location: SF, CA
UTC quote
If you could find a GS carb (good luck) you could simply bore it out to 180 and use a SS180 piston + keep your crank.

Otherwise you could sell that GS case for decent money, make a profit, and get a different case that does not have hard to find replacement parts and to which you could fit one of the afore mentioned kits. All paid for.

Those are your logical options. Otherwise go harsh and fuck up that GS engine so that once you figure out it was all a waste of time and money, you are unable to sell the case for a fraction of what it is worth. Shit drop a reed in it. I'm a fan.
@v_oodoo avatar
UTC

Style Maven
'74 50s x3 '87 PK125XL '92 PK50XLS Plurimatic - & - '58 AllState '68 Sprint '66(?) Super125 and '72 DanMotor Super150
Joined: UTC
Posts: 9618
Location: seattle/athens
 
Style Maven
@v_oodoo avatar
'74 50s x3 '87 PK125XL '92 PK50XLS Plurimatic - & - '58 AllState '68 Sprint '66(?) Super125 and '72 DanMotor Super150
Joined: UTC
Posts: 9618
Location: seattle/athens
UTC quote
Where do you live? If not too much is missing, maybe you could trade what you have for something more like you want. Be a shame to hack a rare motor...

To answer your question, this motor is piston ported so probably not. I'm not positive, but I think your kits are made for rotary valve motors only.

Yeah, you should be able to mount an alternate carb, but hopefully using a bolt on solution of some kind.

Here's more about your motor:
Quote:
The motor on the G.S. 160 was totally new. It seems as though it is a hybrid of the piston-ported motor on the G.S. 150 and the two-piece case design of the Vespa 150. The piston-ported induction style of the G.S. 150 was retained; however it was improved in several ways.

The crankshaft was upgraded and the bearings were enlarged. The size of the clutch and the cush-drive mechanism was increased. In terms of the cases, they were altered to make them similar to those on the Vespa 150. The separate swing arm on the G.S. 150 was deleted, and the motor on the 160 was of a two-piece design with an integrated swing-arm. Essentially all internal parts on the motor were totally new, and almost no parts were shared with either the previous G.S. 150 or the contemporaneous Vespa 125 or 150. The piston-port design necessitated a 5% oil mixture, slightly less than the 6% required on the G.S. 150. The motor put out 8.9 HP at 6500 RPM.
@killo avatar
UTC

Ossessionato
I have a few scooters....
Joined: UTC
Posts: 2225
Location: San Antonio, TX
 
Ossessionato
@killo avatar
I have a few scooters....
Joined: UTC
Posts: 2225
Location: San Antonio, TX
UTC quote
The short answer is no. The GS160 is a piston ported engine. The kits you mentioned are for rotary valve engines.
@nyle avatar
UTC

Addicted
Joined: UTC
Posts: 985
Location: Orange County
 
Addicted
@nyle avatar
Joined: UTC
Posts: 985
Location: Orange County
UTC quote
NO! NO!
If you can get 180 barrel, you can bore it out to fit a P200 piston (with the top hole welded up on the piston).
As far as the carb the stock 27mm carb works fine.
@killo avatar
UTC

Ossessionato
I have a few scooters....
Joined: UTC
Posts: 2225
Location: San Antonio, TX
 
Ossessionato
@killo avatar
I have a few scooters....
Joined: UTC
Posts: 2225
Location: San Antonio, TX
UTC quote
Nyle wrote:
NO! NO!
If you can get 180 barrel, you can bore it out to fit a P200 piston (with the top hole welded up on the piston).
As far as the carb the stock 27mm carb works fine.
But again, it's got to be an SS180 barrel. Talk to Hot Rod Al. He built an over-bored jug for my SS180. He does great work.
@cubastreet avatar
UTC

Hooked
rollin on 8s
Joined: UTC
Posts: 283
Location: NZ
 
Hooked
@cubastreet avatar
rollin on 8s
Joined: UTC
Posts: 283
Location: NZ
UTC quote
you could build it up if you have the money. if the spigot size is the same you could hack the case, stick a big reed on it and run a166 or 177. but you could probably find someone happy to swap you a whole working PX200 engine for what you've got.
@jamesjohn avatar
UTC

Ossessionato
1970 Vespa Rally 180
Joined: UTC
Posts: 4145
Location: Denton Tx.
 
Ossessionato
@jamesjohn avatar
1970 Vespa Rally 180
Joined: UTC
Posts: 4145
Location: Denton Tx.
UTC quote
cubastreet wrote:
you could build it up if you have the money. if the spigot size is the same you could hack the case, stick a big reed on it and run a166 or 177. but you could probably find someone happy to swap you a whole working PX200 engine for what you've got.
you could even swap that engine for a whole other running bike.

If I were you, you want more power, I would trade for a good rebuilt, running P200 engine and drop it right in that frame. do some electrical work, renew the brakes, and get a SIP speedo for headset. maybe repaint with a mild racer look and rock that shit. I would like to see orange and white paint with SIP tubeless wheels and Michelin S1's and paint the letters. lol
UTC

Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
 
Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
UTC quote
Speed_Kills wrote:
If you could find a GS carb (good luck)
These carburetors aren't hard to find. They're frequently on eBay. They are quite expensive though.
Speed_Kills wrote:
Otherwise you could sell that GS case for decent money, make a profit, and get a different case that does not have hard to find replacement parts and to which you could fit one of the afore mentioned kits. All paid for.

Those are your logical options. Otherwise go harsh and fuck up that GS engine so that once you figure out it was all a waste of time and money, you are unable to sell the case for a fraction of what it is worth. Shit drop a reed in it. I'm a fan.
I agree with everything else. Overall, I'd say it's an unwise idea.
@speed_kills avatar
UTC

Addicted
Mostly Lambrettisti
Joined: UTC
Posts: 648
Location: SF, CA
 
Addicted
@speed_kills avatar
Mostly Lambrettisti
Joined: UTC
Posts: 648
Location: SF, CA
UTC quote
nomadinsiam wrote:
Speed_Kills wrote:
If you could find a GS carb (good luck)
These carburetors aren't hard to find. They're frequently on eBay. They are quite expensive though.
I have not seen one in a while. If you see one let me know. I would love to have an extra.
@nigelthefish avatar
UTC

Ossessionato
ET2, PX150
Joined: UTC
Posts: 3410
Location: Denver CO
 
Ossessionato
@nigelthefish avatar
ET2, PX150
Joined: UTC
Posts: 3410
Location: Denver CO
UTC quote
Your might be able to but my vote goes to sell it, toss a p200 (tune the shit out of it it you want) motor in it and sell the OG cases to someone who want them.

So what you want it's your bike.
UTC

Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
 
Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
UTC quote
Speed_Kills wrote:
nomadinsiam wrote:
Speed_Kills wrote:
If you could find a GS carb (good luck)
These carburetors aren't hard to find. They're frequently on eBay. They are quite expensive though.
I have not seen one in a while. If you see one let me know. I would love to have an extra.
I've got an extra good one and an extra trashed one, but I won't let either go. Here are two on eBay Italy that are pretty expensive. Peter from Denmark (ricambiscooters) on eBay has them as well fairly often. He always starts the bidding at $0.99

http://www.ebay.it/itm/VESPA-GS-160-SS-180-CARBURATORE-ORIGINALE-OTTIMO-GETTI-SI-27-23-DELLORTO-/380549483341?pt=Ricambi_e_Accessori_Moto&hash=item589a844b4d

http://www.ebay.it/itm/VESPA-GS-160-SS-180-CARBURATORE-ORIGINALE-OTTIMO-GETTI-185-50-SI-27-23-DELLORTO-/380542420801?pt=Ricambi_e_Accessori_Moto&hash=item589a188741
@speed_kills avatar
UTC

Addicted
Mostly Lambrettisti
Joined: UTC
Posts: 648
Location: SF, CA
 
Addicted
@speed_kills avatar
Mostly Lambrettisti
Joined: UTC
Posts: 648
Location: SF, CA
UTC quote
Ahh.... Italian Ebay. For some reason this does not come up on my searches, even if I select international. Thanks!

External inline image provided by member with no explanatory text
UTC

Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
 
Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
UTC quote
Yes. Italian eBay could be synonymous with the word gouge. One guy quoted me 100 euros to sent a fairly small plastic part that cost 10 euros. I told him he wasn't sending it to Mars. There are a few fair, honest vendors there.
@vader19 avatar
UTC

Mr. Clean
P,SUPER,V90, 50 Special
Joined: UTC
Posts: 10205
Location: This is't my locker!
 
Mr. Clean
@vader19 avatar
P,SUPER,V90, 50 Special
Joined: UTC
Posts: 10205
Location: This is't my locker!
UTC quote
For Godsake save the GS case for someone who needs it and find an old lml case or whathaveyou to "tune the shit out of" as our friend Fish so eloquently put it..

Having said that... it's a free country (at least last time I checked) and you're free to do whatever you want... however horrible and unconscionable... and if you want to race me through the hedge maze remember... the loser has to keep America clean!
@mr10 avatar
UTC

Hooked
150 GLx, Rally 200
Joined: UTC
Posts: 256
Location: Netherlands
 
Hooked
@mr10 avatar
150 GLx, Rally 200
Joined: UTC
Posts: 256
Location: Netherlands
UTC quote
It often helps to check multiple eBay's: .co.uk, .de, .it and even the obscure benl.ebay.be

With good communication international shipping is almost alway possible.

I've bought some stuff from ebay.it without trouble, but know that Vespa stuff in Italy is more expensive then anywhere else, due to rareness.

Speed_Kills: i've sold a couple GS/SS carbs not long ago I know who has 'em, but the guy's a pro - so price will be top of the market.
@fastfrog avatar
UTC

Hooked
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
 
Hooked
@fastfrog avatar
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
UTC quote
Only solution to keep your top end and cases relatively free of tuning work is to fit a pinasco 225 double carb. Hard to find but lots of torque with its only 19mm carb breathing thru a flat reed system... I've done it on my SS engine 20 years ago... Pinasco's spigot is 1mm larger than your GS standard barrel.

[URL=http://s1302.photobucket.com/user/fastfrog/media/IMG_2891_zps367cb1fa.jpg.html]External inline image provided by member with no explanatory text[/URL]
⚠️ Last edited by fastfrog on UTC; edited 1 time
@mr10 avatar
UTC

Hooked
150 GLx, Rally 200
Joined: UTC
Posts: 256
Location: Netherlands
 
Hooked
@mr10 avatar
150 GLx, Rally 200
Joined: UTC
Posts: 256
Location: Netherlands
UTC quote
Just missed one on ebay.de:
http://www.ebay.de/itm/141139773376

Here's a pic of that kit:
External inline image provided by member with no explanatory text
@fastfrog avatar
UTC

Hooked
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
 
Hooked
@fastfrog avatar
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
UTC quote
holy Grail!
UTC

Addicted
1974 Rally 200, 1974 Rally 200 with sidecar, Vespacross bike
Joined: UTC
Posts: 608
Location: Atlanta
 
Addicted
1974 Rally 200, 1974 Rally 200 with sidecar, Vespacross bike
Joined: UTC
Posts: 608
Location: Atlanta
UTC quote
That Pinasco kit will involve some serious case work. That kit is the one that Pinasco has just re-released not to long ago.
New Pinasco Kit Debut!
@fastfrog avatar
UTC

Hooked
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
 
Hooked
@fastfrog avatar
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
UTC quote
Mattgyver wrote:
That Pinasco kit will involve some serious case work. That kit is the one that Pinasco has just re-released not to long ago.
New Pinasco Kit Debut!
Not that much just a small case spingot reboring
UTC

Addicted
1974 Rally 200, 1974 Rally 200 with sidecar, Vespacross bike
Joined: UTC
Posts: 608
Location: Atlanta
 
Addicted
1974 Rally 200, 1974 Rally 200 with sidecar, Vespacross bike
Joined: UTC
Posts: 608
Location: Atlanta
UTC quote
fastfrog wrote:
Mattgyver wrote:
That Pinasco kit will involve some serious case work. That kit is the one that Pinasco has just re-released not to long ago.
New Pinasco Kit Debut!
Not that much just a small case spingot reboring
There's also no boost port on GS cases so it will need some welding to cut that port.
@fastfrog avatar
UTC

Hooked
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
 
Hooked
@fastfrog avatar
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
UTC quote
boost ports are part of the reed block (see pic above). no real need of a grinding extravaganza....
UTC

Addicted
1974 Rally 200, 1974 Rally 200 with sidecar, Vespacross bike
Joined: UTC
Posts: 608
Location: Atlanta
 
Addicted
1974 Rally 200, 1974 Rally 200 with sidecar, Vespacross bike
Joined: UTC
Posts: 608
Location: Atlanta
UTC quote
I know that but the cylinder is made to fit the cases of an engine with the third port so something will have to be done to fill that space, like putting a three port cylinder on a 2 port case, there will be a spot that have to be sealed where they don't match.
@fastfrog avatar
UTC

Hooked
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
 
Hooked
@fastfrog avatar
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
UTC quote
to fill or empty that space? If you put it that way it will work fine inlet window has enough space ( rectangular form) to let fresh mixture to come in...
@kylesalter avatar
UTC

Hooked
vespas, lambrettas, cushman, and mopeds
Joined: UTC
Posts: 386
Location: dallas, tx
 
Hooked
@kylesalter avatar
vespas, lambrettas, cushman, and mopeds
Joined: UTC
Posts: 386
Location: dallas, tx
UTC quote
ive had two customers that wanted more power out of there gs160's. so we didn't have two ruin there stock engine we swaped in rally 200 engines and turn out great. both of the stock engines are still perfect and cam be reinstalled back with no problems
@oopsclunkthud avatar
UTC

Banned
3:5
Joined: UTC
Posts: 8989
Location: San Francisco
 
Banned
@oopsclunkthud avatar
3:5
Joined: UTC
Posts: 8989
Location: San Francisco
UTC quote
If I recall, one of the studs is slightly offset from the 200 as well.
@fastfrog avatar
UTC

Hooked
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
 
Hooked
@fastfrog avatar
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
UTC quote
other (elegant) solution: find the power where it hides: o-tuning mon amour!

new boost port
[URL=http://s1302.photobucket.com/user/fastfrog/media/IMG_1365_zps28fcd599.jpg.html]External inline image provided by member with no explanatory text[/URL]

big ports
[URL=http://s1302.photobucket.com/user/fastfrog/media/IMG_1381_zps153463fd.jpg.html]External inline image provided by member with no explanatory text[/URL]

big carb 27/27
[URL=http://s1302.photobucket.com/user/fastfrog/media/IMG_1572_zps9ebd07b9.jpg.html]External inline image provided by member with no explanatory text[/URL]

big sparks
[URL=http://s1302.photobucket.com/user/fastfrog/media/IMG_1608_zps4aaa31be.jpg.html]External inline image provided by member with no explanatory text[/URL]
DoubleGood Design banner

Modern Vespa is the premier site for modern Vespa and Piaggio scooters. Vespa GTS300, GTS250, GTV, GT200, LX150, LXS, ET4, ET2, MP3, Fuoco, Elettrica and more.

Buy Me A Coffee
 

Shop on Amazon with Modern Vespa

Modern Vespa is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com


All Content Copyright 2005-2024 by Modern Vespa.
All Rights Reserved.


[ Time: 0.0141s ][ Queries: 3 (0.0079s) ][ live ][ 313 ][ ThingOne ]