Thu Nov 18, 2021 10:53 am

Enthusiast
2014 GTV300; 2009 S50
Joined: 04 Jun 2019
Posts: 55
Location: Anchorage AK
 
Enthusiast
2014 GTV300; 2009 S50
Joined: 04 Jun 2019
Posts: 55
Location: Anchorage AK
Thu Nov 18, 2021 10:53 am linkquote
Will it bolt right in?





Fri Nov 19, 2021 1:02 pm

Enthusiast
2014 GTV300; 2009 S50
Joined: 04 Jun 2019
Posts: 55
Location: Anchorage AK
 
Enthusiast
2014 GTV300; 2009 S50
Joined: 04 Jun 2019
Posts: 55
Location: Anchorage AK
Fri Nov 19, 2021 1:02 pm linkquote
Bump
Fri Nov 19, 2021 1:11 pm

Moderatus Rana
MP3 250 and 2 MP3 500s
Joined: 11 Jul 2008
Posts: 22159
Location: Nashville, Indiana
 
Moderatus Rana
MP3 250 and 2 MP3 500s
Joined: 11 Jul 2008
Posts: 22159
Location: Nashville, Indiana
Fri Nov 19, 2021 1:11 pm linkquote
Lars_Danner wrote:
Bump
Let's not start bumping this everyday OK? It gets annoying. Give it more time.
Fri Nov 19, 2021 1:55 pm

Hooked
MP3 250 / Vespa S50
Joined: 21 Dec 2010
Posts: 125
Location: Toronto, Canada
 
Hooked
MP3 250 / Vespa S50
Joined: 21 Dec 2010
Posts: 125
Location: Toronto, Canada
Fri Nov 19, 2021 1:55 pm linkquote
I don't know if it's a direct fit, but you can swap them.

I do believe that the LX has a security system, that I'm not sure if the S does, so if you're using some kind of ignition module for the LX, you may also want the matching key.

I'm not super knowledgeable on this though so I'm going to defer to smarter people who will hopefully chime in after me.
Sat Nov 20, 2021 12:24 pm

Addicted
2010 S50 Modified "Punkin"; 2003 ET4 Malossi 187 "ISO"
Joined: 18 Feb 2017
Posts: 744
Location: Deepinnaharta, Texas
 
Addicted
2010 S50 Modified "Punkin"; 2003 ET4 Malossi 187 "ISO"
Joined: 18 Feb 2017
Posts: 744
Location: Deepinnaharta, Texas
Sat Nov 20, 2021 12:24 pm linkquote
Greetings:

I've looked at my 2003 ET with a Leader engine, a little, compared to a 2010 S50. Physically should fit, but first you may have to sort out spacers and things for the engine mount. One big electrical difference is that the 50 runs the headlamp right off the alternator, while the 150 light comes on with the key. The 150 uses a bigger battery.

Speaking of keys, AFAIK all the S models came with black keys and no immobilizer. Even the 2003 ET has a blue key and immobilizer flasher in the dash. There may be work-arounds, but the simplest thing would seem to be acquiring the entire wiring harness and instrument cluster from a 150 to swap along with the engine. The 50 cc speedometer only reads up to 50, don't want to bend that needle going around the dial...

It only makes sense if you enjoy the process and challenges as I do. Please post some pics if you decide to proceed, but Financially, probably better sell or part out both and find a decent 150 to start with.
Sun Nov 21, 2021 1:42 am

Enthusiast
2014 GTV300; 2009 S50
Joined: 04 Jun 2019
Posts: 55
Location: Anchorage AK
 
Enthusiast
2014 GTV300; 2009 S50
Joined: 04 Jun 2019
Posts: 55
Location: Anchorage AK
Sun Nov 21, 2021 1:42 am linkquote
Wheelman-111 wrote:
Greetings:

***
Speaking of keys, AFAIK all the S models came with black keys and no immobilizer. Even the 2003 ET has a blue key and immobilizer flasher in the dash. There may be work-arounds, but the simplest thing would seem to be acquiring the entire wiring harness and instrument cluster from a 150 to swap along with the engine....
***
Hmmm... I'm wondering if I can just use the 50's CDI with the 150 engine.
Sun Nov 21, 2021 5:47 am

Ossessionato
Joined: 22 Oct 2011
Posts: 4660
Location: Tega Cay, SC
 
Ossessionato
Joined: 22 Oct 2011
Posts: 4660
Location: Tega Cay, SC
Sun Nov 21, 2021 5:47 am linkquote
Yes, as far as I know, it will fit. But you also need the whole security system (CDI with key, immobilizer) maybe the shock, exhaust, possible wiring harness or adapt, gauge cluster, etc...
Sun Nov 21, 2021 6:24 am

Addicted
2010 S50 Modified "Punkin"; 2003 ET4 Malossi 187 "ISO"
Joined: 18 Feb 2017
Posts: 744
Location: Deepinnaharta, Texas
 
Addicted
2010 S50 Modified "Punkin"; 2003 ET4 Malossi 187 "ISO"
Joined: 18 Feb 2017
Posts: 744
Location: Deepinnaharta, Texas
Sun Nov 21, 2021 6:24 am linkquote
Greetings:

There are few people in this world who know less than I about Engine Control Modules, but consider that my (4-valve) 50 happily revs to near 10K RPM. I don't believe the 150 can safely spin that high. If the ECM is for the 50, the 150 will lose over-rev protection to that extent. I have no certainty, but things like spark advance curves may also differ considerably. It may run - and I really hope it does - but it may not run correctly.
Mon Nov 22, 2021 4:51 pm

Sponsor
Granturismo 218
Joined: 04 Feb 2013
Posts: 7074
Location: NWAOK
 
Sponsor
Granturismo 218
Joined: 04 Feb 2013
Posts: 7074
Location: NWAOK
Mon Nov 22, 2021 4:51 pm linkquote
If you are putting the engine in, the immobilizer chip doesn't matter. It operates through the CDI, and not the engine itself. I'm not sure how the timing will be on the 150 vs 50, but you might even be able to use the stator from the S on the 150 motor. The flywheels are the same diameter. The cranks are different sizes though, so there's no way the flywheel from the 50 will fit on the 150. If the S is a 4 valve, it might be easier to convert over, because it uses a similar CDI arrangement as the LX does, but without the immobilizer.
Take this for what it costs, and remember that I used the word "might" quite a bit. I have no actual experience making this swap.
The body is the same for both displacements, they mount the same, and if you look at the differences between the harness for the S150 and the S50, you will get a better idea of what needs to be different. You can straight up swap an LX and S 150 carb engine all day long, so wherever the harness for the S150 and S50 diverge is where you will need to figure workarounds.
You would need the rear shock and exhaust for the ET4, LX, S 150. And burying the speedometer will be a lot easier than before, if you don't change anything.
The two valve S50 uses a combined CDI and coil. If you can get it to trigger, it should run the engine, but I'm not sure how well or for how long. The voltage regulators are different, and the 150 expects to run 55/60 watt bulbs, while the 50 is 30/30watt.
Wed Nov 24, 2021 2:28 pm

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: 21 Oct 2005
Posts: 9684
Location: The state of insanity, SoCal
 
Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: 21 Oct 2005
Posts: 9684
Location: The state of insanity, SoCal
Wed Nov 24, 2021 2:28 pm linkquote
the motor is a direct bolt in. you'll need a complete 150 harness. LX or LXS doesn't matter, you may need to do a bit of fiddling up at the headset connectors, so do yourself a favor and get a 150 speedometer now, it'll make everything so much easier in the future.

and when I say complete, I mean COMPLETE- CDI, voltage regulator, ALL the relays, bulb plugs, EVERYTHING.

don't go mucking about trying to scab in a 150 into the 50 harness, that's a fools errand. buy a complete motor and just knock it in.

like Moto said, you'll need a new rear shock and and exhaust for a 150.

you'll need to strip the bike COMPLETELY down, minus the fork to run all the wiring, drop the tank a little to deal with the fiddly bits out back.

don't forget to disconnect the rear brake cable.

you'll also need a new battery and battery tray. pretty sure the intake bellows are different as well.

other than that, it's just a lot of tedious work. good luck and hit me up if you need any parts.
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