Rebuild a Vespa P125 Motor Part 1: Engine Tear-Down
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- Опубліковано 4 жов 2024
- *SEE TABLE OF CONTENTS BELOW*
As this is a long and intense video, feel free to skip ahead to a specific section of the video. Also be aware there is a PART 2 of this process.
Steve walks us through the process of rebuilding a P125 motor. This will be the same or very similar on most vintage large frame Vespas with some minor exceptions. In addition to inspecting all aspects of the motor during tear down, Steve points out all the wear items that should usually be replaced during a rebuild. We also went ahead and installed a Malossi cylinder kit and upgear kit while we were at it.
TABLE OF CONTENTS:
Prepping Frame - 1:04
Drain Oil/Remove Fan Shroud - 1:40
Remove Selector Box - 3:15
Remove Cylinder - 17:49
Split Crankcase - 25:05
Gear Removal - 32:25
Shifting Cross - 35:36
Engine Removal - 38:08
Rear Hub/Brakes - 39:03
Clutch - 42:41
Remove Crankshaft - 46:07
Axle/Lay Shaft/Main Seal - 46:57
VESPA MOTORSPORT
3955 Pacific Hwy.
San Diego, CA 92110
For the largest selection of parts and accessories in North America, please visit our website:
WWW.SCOOTERWEST.COM
Thanks for viewing!
The speed and thoroughness of this video is really great. Superb job. I have my 1984 vespa 125 that I have not ridden since about 2017 and the clarity of this video inspired me to start getting it road safe again. Thank you!
Thanks for taking the time to do this for all of us! This is why the Pharaohs SC calls Vespa Motorsport "The Shop!"
Angel (aka: Turdle)
Just would like to say... a BIG thanks to you guys for all your vids.... extremely helpful... Cheers Mike ,from across the pond UK
Kudos to these guys and their videos. I have been considering a scooter, but am sold on the Vespa by how they are put together.
Thank you so much guys, for posting this videos , I found you guys. On UA-cam already visited your website definitely ordering parts from you, to restore vespa from 1962 , thanks
Great to hear, Jon! And nice job filling in on camera for us, thank you!
That Malossi 166 kit pulls really well on acceleration (Even with the gearing kit and being tuned rich for break-in)... Highly recommended. The scooter is shifting great now thanks to the shop's expertise!
A big thanks to the folks at Vespa Motorsport / Scooterwest!
This video is gold! Thank you for the explanation of each part and what to look for
Glad it was helpful! Thanks for checkin us out...
thank you so much! hugs and greetings from Medellín!
BIG THANKS FROM BANDUNG - INDONESIA!!
Excellent video, well paced and detailed in every respect thanks very much guys you have been a great help.
This video is really useful. Really really useful. Wish id seen it before I took mine to pieces although now i've seen the vid i'm going to take it apart again.
great videos. thanks. i feel much happier attempting my top end rebuild tomorrow.
Hi, so I have inherited a Piaggio Ape. It has a motor. Just the motor is in a bucket not the ape. (and by inherited I mean my boyfriend got it and now it is sitting in my friends garage and I am not a fan of leaving partially dismantled vehicles at peoples houses.)
So there are not a lot of videos of ape rebuilds (in English anyway) but I am thinking these videos, on the vespa, will get me heading in the right direction. Course I have never restored/rebuilt any engine and boyfriend wants to pay a guy. But I do not feel like waiting for pigs to fly and I have always wanted to do a project like this. Also I am "frugal". I kinda think the ape isn't a bad place to start.
Coles notes advice needed.
Like the chinese make costefficient products now the italians did the same in the last century! A scooter for the common man! Not to hard on quality! Doing a restauration on these scooters can bring up some high costs when you have to replace worn out parts! I have to say it bring back some memories of little sized engined motors I had in my younger days! Twostroke! You don't see that around very often now! Good video that showed me good tricks and the tecnical side of this little engine!
Steve is the Man!
Great video and really helpful for informative 👌🏾. Im thinking of getting a Vespa to go along the Lambretta.
An excellent video, honestly!! Surprised you haven't had more views already. The video has helped clarify a few issues in which I was struggling to get information About, I have honestly been waiting for a video like this for years. Thanks again.
Great to hear! Thanks for your support. We'll have more videos like this coming soon.
Thank you very much! You rock! Plus your video shows how reliable are those Vespa engines.. that one didn't have any major issue.
Thanks to the mechanic!
Thank you very much. This is a great video, very well done and very helpful.
There are virtually no differences between a 125 and 150cc P-series motor, regardless of year. To be completely honest, this same video is good for a 200cc engine as well. Of course there are some differences over the 30+ year production run but a 1977 is amazingly similar to a 2007
I have reposted this for Black Cloud Scooter Club here in Vancouver bc....thanks !
Waooo ... nice video .. i like it . becouse we have vespa PX 125 . 1986 . thanks for your Video .
this is great,... so helpful to see all this up close with great blow by blow. Too bad though that cam of yours couldn't focus on the zoomed in detail stuff.
WOW, that was amazing. I have an older "Allstate", 63 large frame, that is seized up. So the obvious tips you offered like, spinning the rear wheel, twisting the shifter, or moving the crank with the kick starter, may not work for me. But that said any special advices for a seized engine?
you guys have helped me sooo much, thank you xx
Great video. Thanks for uploading.
Well done
Excellent video all round! My P150X (bought new in 1988) has only done 10,000 easy miles and EVERYTHING including engine parts is factory original without any tampering. It displayes haphazard misfire and rough running and marginal loss of power. As points timing and carb are O.K. I suspect the crankshaft seal has deteriorated over the years and does not seal properly.
Your expert advice most appreciated before I tear-down to change the seal.
This is so cool
im from sudan in africa your Video is fun and very useful, your way to remove the parts of the engine looks very perfect, I have a Vespa and as a result of technical mistakes affected the case a little bit where screws can't linked tightly the holes of screws became wide in the case, also became the engine beeps bang strong when running, which can not be the engine of rotation In your opinion what is the reason ,, I wish you were here to fix it. Thank you
Good video. Thumbs up!
fantastic guys, i found this video really helpfull, cheers
matur nuwon kang mas
Hola Amigos! Well done. Helpful video!
Thanks for this - it is great and extremely informative. Can you detail the differences, if any, between the process for a 125 and 150 cc motor. Thanks again and looking forward to more...
wow. thanx for this video.
This is one of the best "how to" videos I have ever seen. What a fabulous job. Now, I have the knowledge and confidence to try it myself. Thank you! BTW, are there many differences between this motor and the one in my 74 Primavera 125?
Glad it was helpful, and good luck with your project! Small frame motors have a different layout, but the concepts are generally the same. If you follow a workshop manual and this video, you should have no problems. We have this small frame carb clean video that may have some useful info. ua-cam.com/video/h-wpPQ5nbHM/v-deo.html
Execellent vidio de Vespa engine gostei.
hi there. i tried to rebuild the engine myself. but I am struggling to remove the crankshaft. A gentle tap doesn't do any good. do you have a suggestion on how to remove the stubborn crank? thanks.
Hello Folks this information is really Use full information. is there any way i could have some knowledge on how to upgrade the point set wiring to and 12v electronic wiring. I have a Bajaj chetak 1984-85 model.
Superb videos these,top notch!Keep up the good work ;-)
Me viene de lujo. Gracias
¿Por qué no utiliza guantes?
When was the last year that Vespa produced manual transmissions ?, from what I heard Vespa does not manufacture manual transmission anymore.
In regards to the studs ends with different thread lengths at 22:50... And mentioning that the shorter threaded end goes into the crankcase... just took mine out, and they were the opposite way around (long thread in, short thread out). Would you flip em' around if you found them like that?
Cast aluminum cylinder? Looks very rusty to me to be aluminum. Did you mean cast steel cylinder?
What is the gap (mm) back wheel side to real shock spring of vespa px-200. Iam waiting for this. Thanks.
Hello mister, could you please explain why 2 stroke Vespas lack engine braking? I have a PX - 150 that is scary to ride down a hill because it just speeds up and over revs while in 1st gear with throttle closed. If my drum brakes ever failed, I'd be dead.
Sooo.... double nut is not a sexual position. 20:50 You guys rock, thanks for all the tips and great explanations!
Great this is useful. Thanks...
Hello, my vespa super 125 from 1964 just dont want to start. I thing it is that the kickstart isn't hard enough. Can i tighten the cluch? But can it be something wrong with the carburator or something?
Thank you for the video. I have a 150 sprint from 1966. I took off all the retains but I can t split the case. Any suggestion? Thank you!
I love to vespa
hi my name is joe im having trouble separete the block on a p125x your came out so easy i sure a take out all the bolt and nut any thing you can suggest to help .thanks in advance
Osm Vespa motorsport👍
what the reason why the engine of vespa makes a loud sound once operates???
im from africa where i cant reach,please give me some a dvices..
Hi, I have a vespa px 150 but it turns me on only with the cold choke eb then it remains normally but it expels me gasoline with air in the intake mouth of the carburetor i need help I need know what can be what is giving me fails thanks
love it..
Vespa. Bella. Macina
awesome tutorial, this has helped me tear down my Vespa piagio from like '69/70 not sure which. of youre still active is there any way I can contact you?
I love the way you guys really know what you're doing. I used to live in San Diego in the early seventies. I'm not a big fan of Vespa small wheels. . Does anyone know what scooter is every Vespa executive nightmare, as far as being a competitor?
Is this one a Spanish motovespa? because I've seen written in the cylinder head the words 150S, which was a Spanish very popular model
Great and instructive video; you used the words "basically", "essentially", "obviously" and "actually" over one hundred times to the point of distraction; these are verbal tics and ruin an otherwise excellent tutorial
what's up guys, it's been months since I had my engine apart (p200e) 1980. I was following along with this video. it's all back together and in the bike, but, I can't seem to get the selector box to shift into 4th gear. I mean, the selector will go into the fourth notch when it's off the bike, but it won't do it when it's on the bike. I can push the plunger in by hand while moving the wheel, and I get all four gears. Could something be upside down in there? Cruciform? One of the gears? Also, the kick start, clicks when I release it, I don't remember the bike doing that before.
I got it! There's a swivel on the selector box lever that needs to fit behind the face of the shift plunger! :)
+Vespa Motorsport do u guyz have a fly wheel puller for bajaj chetak 12 v electronic
hiya my mate has just rebuilt his p200e engine put it on the bike it starts and idels fine but it wont rev up at all and plus he has noticed possibly gear oil getting in to the piston what could be the problem ?
I don't want to sound like a smart ass but the problem is your friend should not have rebuilt his engine. THis is because when you rebuild an engine either you know what you are doing or you don't and if you don't then you are on your own. Or maybe the answer to you would be "take the engine to us sir and we'll look at it"
does a vespa allstate 125 have the same function/format?
can you rebuild or change the cluth to an automatic? I would like to purchase a retro vespa like 1965 model, but I think they are clutch operated and I would love if they wre automatic gear. thanks
Ivy ramos Not very easily. Pretty much the only thing you'd be able to do is custom fit an automatic motor from a modern scooter. It would require a lot of fabrication and engineering. The old manual shift Vespas are not that hard to drive once you get the hang of it, and the modern Vespas are a blast to drive if you can get past the updated looks. A lot of us here at our shop have both vintage and modern Vespas for this same reason...
Thank you very much for taking your time is responding back. I guess I would have to learn how to drive it. I just love, love the vintage look for a drive around the city. Thank you!
+Ivy ramos Get a LML 125 Automatic.
Looks like a Vespa, and practically is a Vespa (Same Frame)
But got a Automatic Motor. Is Available with a 4T Engine too
nv
And
nice video, but seriously, could you get someone or something that could focus properly. especially when he says "and as you see here" and its focused o the back wall.
How much oil will I need to put into the gearbox?
250mls
Hi,I have a 59 VBA 150 would this tutorial apply to my Vespa give or take a few variations or is it a different ball park? thanks.
+Spencer Dodds This will definitely help you and will have many of the same principles as your VBA. Like you said, there will be a few differences, but this will get you goin.
Thats great! thanks very much.
5:47 a little bit of this and that, and you got a bicycle
please hire me i would love to learn this all things
quitaste una parte del guardafango trasero y la arrojaste..?????...¨el cliente es nuestra mayor preocupación..¨....
can i use that video for tear down p200e engine ???
Tearing down a P200E motor is the same as with the PX125
Sir I need ur help
feac book ?
Complimenti bellissimo video io ho fatto dei modellini in scala se ti va di vederli su UA-cam antonello vicino vespa e il ciao se ti va puoi farlo girare ad altri vespisti grazie
نريد تحويل الفيسبا الصباب الي بيستم
hire me i would love to learn this please i will work extra hours
Nice
por favor traduscanlo en español.
Like extrim
Oh please get those cable ends away from your eyes.
Sad me
well
Vespa Engine First Start After Restoration | No Exhaust | Piaggio Vespa | Restored Vespa Engine 🔥 🔥
ua-cam.com/video/jqLmLCBITX8/v-deo.html
STOP TAPPING AND THROWING SOMEONES BIKE PARTS AROUND! what is wrong with you?
andrew latchford
yeah!!!
You might want to take those keys off as well, before something (like the paint) gets scratched.
Pretty cool stuff.
My friend I bought it from, hes a old school punkrocker...anyhow he tells me that the original owner was the President or the Vespa club of America.
I wanted to personally thank you guys for doing these vids, Ive always loved Vespas.
I recent found a really awesome barn find..
A 72 Rally 200 Electronic, im new to Italian 2 strokes however have 25yrs exp in restoration on 2 stoke bikes, cars, mopeds, dirtbikes....etc.
Can you guys point me in a direction for parts? It needs new rubber, electrics, leathers, it has 4 thousand miles in the odometer, body is in great condition no rust... Thanks bros.
Im from Socal but living in Wisconsin and its tough out here for a vespa owner.
Congrats on your find, sounds awesome! We've got just about the largest selection of vintage parts in the US. Check out our website at www.scooterwest.com or feel free to give us a call 619-280-1718. There are some things we don't have listed on our site, and our knowledgeable staff will definitely be able to get you what you need!
*****
Its a 74...my bad.
Tell Robot he reminds me of a Ramone and hes the shit, thanks for all the crank and electronic tips.
I just got a chance to inspect it, pretty nice for a bike thats been sitting for 10 plus years, some rubbers rotten, tore it down, cylinders looked very nice, its been soaking in Oil a couple days just to prime her for first start, cleaned fuel lines, removed oil and just ran pre mix... no lie first kick fired up.. The speedo reads 4 thousand miles and I belive it.. cables look original. I did most your preferred inspections you show on your p200 build vid, gearbox, floor boards, all the wear and tear on the grip inserts.
It looked rough but underneath all the dust....im stoked..
Im from Riverside Ca btw but I mover to WI.
So Cali love me brodas. Oi!
Thanks for the love Nick! We really appreciate hearing positive response to the videos. Please don't hesitate to give us a call if you need help finding any parts, etc. We're just about to upload an addendum to the P200 engine rebuild that covers the pre P-series engines. There may be some info in there that will benefit you.
*****
Stoked... thanx bud, im looking forward to seeing it.
What ever happened to your Rally? Please don't say you painted it.
nice video! but some pratcital tips could be added(check my utube channel & the FMPguides for more tips) also : there is a missing analyse: cyl head was not tight = false air as u can see at the cyl and on the head. Tip0: sandpaper the head, every head, even new ones (also cnc heads) to avoid leaking Tip1: mark the cylinderbolts so u know how far they were in, that makes it easier if tou fit them again. Tip2: there is absolutely no need to take out the cables oft he gear selector as it can stay on the scooter, u can also check it there if ist ok. tip3: use a (big or small) drilling machine (as everybody has one) for the screw nuts, just first loosen it with a ratchet, no need for a funny fastrachtettool like here. tip4: the very FIRST thing to do is to loosen the backwheel screw nut as it can be pretty f*** tight, u always do that while the scooter is still standing on the ground so you can use your weight (standing in the scooter) AND pressing the rear brake and if needed an extension for the ratchet (longer Lever = easier to open) esp if you dont have a wheel gun. (in some cases if someone used a car wheel gun u have no Change loosen it when the engine is out of the Frame) tip5: u DONT catch the needles with your hand, cause u will lose some ;o) simply use a cap of a spray or a magnet-bowl and put it under the shaft while pushing it out from the backside. Tip6: if ur scooter has 20.000km u always replace the springs in the primary, always use the 200 kit with double springs. WATCH MY utube CHANNEL 4 more pracital tips FMPguides about vespa service&tuning :o) PART2 comments soon, pretty sure i can add some tips there too. Greetz from Austria (the other one withOUT kangoroos) & driveSAFE!